SFS Models

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Features of SFS Models

These couplings have disc springs that use steel for the body. They are the basic type of SERVO FLEX. Single-element types with high torsional stiffness, flexible double-element types that separate double elements with a spacer, and floating shaft types that combine double elements with intermediate flanges are available.

Wide line-up

Both SFS S single-element types with high torsional stiffness, flexible SFS W double-element types that separate double elements with a spacer, and SFS G types that support even longer distances between shafts are available.

Electroless nickel plating also available

Products finished with electroless nickel plating as the surface treatment may be selected for pilot bore couplings and key/set screw couplings.

High-precision mounting

The SFS S/W/G-[ ] M- [ ] M types use friction couplings. They are designed to have the sleeve inserted inside the flange, so they can be mounted very precisely, using the outer diameter of the sleeve as a guide.

Can be assembled from part components

Since we deliver products as components, you can safely use them even in designs that cannot be mounted once assembled. Products can also be shipped pre-assembled, upon request. And since the flanges have interchangeable mounting dimensions, you can order products that have a pilot-bore coupling on the flange of only one side, combined with key/set screw type flanges and high-precision friction coupled flanges.

SFS Models Specifications

SFS-□S Types

[Specifications]

Model	Rated torque［N・m］	Misalignment		Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg・m²］	Mass［kg］
Model	Rated torque［N・m］	Angular［°］	Axial［mm］	Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg・m²］	Mass［kg］
SFS-05S	20	1	±0.6	25000	16000	43	0.11×10^-3	0.30
SFS-06S	40	1	±0.8	20000	29000	45	0.30×10^-3	0.50
SFS-08S	80	1	±1.0	17000	83000	60	0.87×10^-3	1.00
SFS-09S	180	1	±1.2	15000	170000	122	1.60×10^-3	1.40
SFS-10S	250	1	±1.4	13000	250000	160	2.60×10^-3	2.10
SFS-12S	450	1	±1.6	11000	430000	197	6.50×10^-3	3.40
SFS-14S	800	1	±1.8	9500	780000	313	9.90×10^-3	4.90

*Max. rotation speed does not take into account dynamic balance.

*The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Unit [mm]

Model	d1・d2			D	N	L	LF	S	F	K	M
Model	Pilot bore	Min.	Max.	D	N	L	LF	S	F	K	M
SFS-05S	7	8	20	56	32	45	20	5	11	24	4-M5×22
SFS-06S	7	8	25	68	40	56	25	6	10	30	4-M6×25
SFS-08S	10	11	35	82	54	66	30	6	11	38	4-M6×29
SFS-09S	10	11	38	94	58	68	30	8	21	42	4-M8×36
SFS-10S	15	16	42	104	68	80	35	10	16	48	4-M8×36
SFS-12S	18	19	50	126	78	91	40	11	23	54	4-M10×45
SFS-14S	20	22	60	144	88	102	45	12	31	61	4-M12×54

*Pilot bores are to be drilled into the part.

*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

[Standard bore diameter]

Model	Standard bore diameter　d1・d2　[mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05S	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06S	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-08S				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-09S				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-10S								●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-12S											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-14S													●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.

【Standard Hole-Drilling Standards】

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959					Models compliant with the new JIS standard (H9) JIS B 1301 1996					Models compliant with the new JIS standard (JS9) JIS B 1301 1996
Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7,H8	ToleranceE9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceH9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceJS9	－	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4^+0.3₀	2-M4	8J	8^+0.022₀	3^±0.0125	9.4^+0.3₀	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4^+0.3₀	2-M4	9J	9^+0.022₀	3^±0.0125	10.4^+0.3₀	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4^+0.3₀	2-M4	10J	10^+0.022₀	3^±0.0125	11.4^+0.3₀	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8^+0.3₀	2-M4	11J	11^+0.018₀	4^±0.0150	12.8^+0.3₀	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.3₀	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8^+0.3₀	2-M4	12J	12^+0.018₀	4^±0.0150	13.8^+0.3₀	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16^+0.3₀	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3^+0.3₀	2-M4	14J	14^+0.018₀	5^±0.0150	16.3^+0.3₀	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17^+0.3₀	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3^+0.3₀	2-M4	15J	15^+0.018₀	5^±0.0150	17.3^+0.3₀	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18^+0.3₀	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3^+0.3₀	2-M4	16J	16^+0.018₀	5^±0.0150	18.3^+0.3₀	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19^+0.3₀	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3^+0.3₀	2-M4	17J	17^+0.018₀	5^±0.0150	19.3^+0.3₀	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20^+0.3₀	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8^+0.3₀	2-M5	18J	18^+0.018₀	6^±0.0150	20.8^+0.3₀	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21^+0.3₀	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8^+0.3₀	2-M5	19J	19^+0.021₀	6^±0.0150	21.8^+0.3₀	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22^+0.3₀	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8^+0.3₀	2-M5	20J	20^+0.021₀	6^±0.0150	22.8^+0.3₀	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25^+0.3₀	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8^+0.3₀	2-M5	22J	22^+0.021₀	6^±0.0150	24.8^+0.3₀	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27^+0.3₀	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3^+0.3₀	2-M6	24J	24^+0.021₀	8^±0.0180	27.3^+0.3₀	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28^+0.3₀	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3^+0.3₀	2-M6	25J	25^+0.021₀	8^±0.0180	28.3^+0.3₀	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31^+0.3₀	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3^+0.3₀	2-M6	28J	28^+0.021₀	8^±0.0180	31.3^+0.3₀	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33^+0.3₀	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3^+0.3₀	2-M6	30J	30^+0.021₀	8^±0.0180	33.3^+0.3₀	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.3₀	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3^+0.3₀	2-M8	32J	32^+0.025₀	10^±0.0180	35.3^+0.3₀	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.3₀	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3^+0.3₀	2-M8	35J	35^+0.025₀	10^±0.0180	38.3^+0.3₀	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.3₀	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3^+0.3₀	2-M8	38J	38^+0.025₀	10^±0.0180	41.3^+0.3₀	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.3₀	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3^+0.3₀	2-M8	40J	40^+0.025₀	12^±0.0215	43.3^+0.3₀	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5^+0.3₀	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3^+0.3₀	2-M8	42J	42^+0.025₀	12^±0.0215	45.3^+0.3₀	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.3₀	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8^+0.3₀	2-M10	45J	45^+0.025₀	14^±0.0215	48.8^+0.3₀	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.3₀	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8^+0.3₀	2-M10	48J	48^+0.025₀	14^±0.0215	51.8^+0.3₀	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.3₀	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8^+0.3₀	2-M10	50J	50^+0.025₀	14^±0.0215	53.8^+0.3₀	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60^+0.3₀	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3^+0.3₀	2-M10	55J	55^+0.030₀	16^±0.0215	59.3^+0.3₀	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61^+0.3₀	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3^+0.3₀	2-M10	56J	56^+0.030₀	16^±0.0215	60.3^+0.3₀	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65^+0.3₀	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4^+0.3₀	2-M10	60J	60^+0.030₀	18^±0.0215	64.4^+0.3₀	2-M10

Models compliant with the new JIS standard (P9) JIS B 1301 1996					Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7，H8	ToleranceP9	^{+ 0.30}₀	－	Nominal bore diameter	－	ToleranceG7，F7	ToleranceH9	－
8P	8 +0.022	3^－0.006_－0.031	9.4^+0.3₀	2-M4	-	-	-	-	-
9P	9 +0.022	3^－0.006_－0.031	10.4^+0.3₀	2-M4	-	-	-	-	-
10P	10 +0.022	3^－0.006_－0.031	11.4^+0.3₀	2-M4	-	-	-	-	-
11P	11+0.018	4^－0.042_－0.012	12.8^+0.3₀	2-M4	-	-	-	-	-
12P	12 +0.018	4^－0.042_－0.012	13.8^+0.3₀	2-M4	-	-	-	-	-
14P	14+0.018	5^－0.042_－0.012	16.3^+0.3₀	2-M4	14N	14^+0.024_+0.006	5+0.030	16.3^+0.3₀	2-M4
15P	15+0.018	5^－0.042_－0.012	17.3^+0.3₀	2-M4	-	-	-	-	-
16P	16+0.018	5^－0.042_－0.012	18.3^+0.3₀	2-M4	-	-	-	-	-
17P	17+0.018	5^－0.042_－0.012	19.3^+0.3₀	2-M4	-	-	-	-	-
18P	18+0.018	6^－0.042_－0.012	20.8^+0.3₀	2-M5	-	-	-	-	-
19P	19 +0.021	6^－0.042_－0.012	21.8^+0.3₀	2-M5	19N	19^+0.028_+0.007	6+0.030	21.8^+0.3₀	2-M5
20P	20 +0.021	6^－0.042_－0.012	22.8^+0.3₀	2-M5	-	-	-	-	-
22P	22 +0.021	6^－0.042_－0.012	24.8^+0.3₀	2-M5	-	-	-	-	-
24P	24 +0.021	8^－0.051_－0.015	27.3^+0.3₀	2-M6	24N	24^+0.028_+0.007	8+0.036	27.3^+0.3₀	2-M6
25P	25 +0.021	8^－0.051_－0.015	28.3^+0.3₀	2-M6	-	-	-	-	-
28P	28 +0.021	8^－0.051_－0.015	31.3^+0.3₀	2-M6	28N	28^+0.028_+0.007	8+0.036	31.3^+0.3₀	2-M6
30P	30 +0.021	8^－0.051_－0.015	33.3^+0.3₀	2-M6	-	-	-	-	-
32P	32 +0.025	10^－0.051_－0.015	35.3^+0.3₀	2-M8	-	-		-
35P	35 +0.025	10^－0.051_－0.015	38.3^+0.3₀	2-M8	-	-	-	-
38P	38 +0.025	10^－0.051_－0.015	41.3^+0.3₀	2-M8	38N	38^+0.050_+0.025	10+0.036	41.3^+0.3₀	2-M8
40P	40 +0.025	12^－0.061_－0.018	43.3^+0.3₀	2-M8	-	-	-	-	-
42P	42 +0.025	12^－0.061_－0.018	45.3^+0.3₀	2-M8	42N	42^+0.050_+0.025	12+0.043	45.3^+0.3₀	2-M8
45P	45 +0.025	14^－0.061_－0.018	48.8^+0.3₀	2-M10	-	-	-	-	-
48P	48 +0.025	14^－0.061_－0.018	51.8^+0.3₀	2-M10	48N	48^+0.050_+0.025	14+0.043	51.8^+0.3₀	2-M10
50P	50 +0.025	14^－0.061_－0.018	53.8^+0.3₀	2-M10	-	-	-	-	-
55P	55 +0.030	16^－0.061_－0.018	59.3^+0.3₀	2-M10	55N	55^+0.060_+0.030	16+0.043	59.3^+0.3₀	2-M10
56P	56 +0.030	16^－0.061_－0.018	60.3^+0.3₀	2-M10	-	-	-	-	-
60P	60 +0.030	18^－0.061_－0.018	64.4^+0.3₀	2-M10	60N	60^+0.060_+0.030	18+0.043	64.4^+0.3₀	2-M10

※Positions of set screws and keyways are not on the same plane.

※Set screws are included with the product.

※Positioning precision for keyway milling is determined by sight.

※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.

※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.

【Set screw position】

Model	Distance from edge [mm]
SFS-05	7
SFS-06	9
SFS-08	10
SFS-09	10
SFS-10	12
SFS-12	12
SFS-14	15

SFS-□S (C) Types

[Specifications]

Model	Rated torque［N・m］	Misalignment		Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg・m²］	Mass［kg］
Model	Rated torque［N・m］	Angular［°］	Axial［mm］	Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg・m²］	Mass［kg］
SFS-05S-C	15	1	±0.6	25000	16000	43	0.11×10^-3	0.30
SFS-06S-C	30	1	±0.8	20000	29000	45	0.30×10^-3	0.50
SFS-08S-C	60	1	±1.0	17000	83000	60	0.87×10^-3	1.00
SFS-09S-C	135	1	±1.2	15000	170000	122	1.60×10^-3	1.40
SFS-10S-C	190	1	±1.4	13000	250000	160	2.60×10^-3	2.10
SFS-12S-C	340	1	±1.6	11000	430000	197	6.50×10^-3	3.40
SFS-14S-C	600	1	±1.8	9500	780000	313	9.90×10^-3	4.90

*Max. rotation speed does not take into account dynamic balance.

*The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Unit [mm]

Model	d1・d2		D	N	L	LF	S	F	K	M
Model	Min.	Max.	D	N	L	LF	S	F	K	M
SFS-05S-C	8	20	56	32	45	20	5	11	24	4-M5×22
SFS-06S-C	8	25	68	40	56	25	6	10	30	4-M6×25
SFS-08S-C	11	35	82	54	66	30	6	11	38	4-M6×29
SFS-09S-C	11	38	94	58	68	30	8	21	42	4-M8×36
SFS-10S-C	16	42	104	68	80	35	10	16	48	4-M8×36
SFS-12S-C	19	50	126	78	91	40	11	23	54	4-M10×45
SFS-14S-C	22	60	144	88	102	45	12	31	61	4-M12×54

*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

[Standard bore diameter]

Model	Standard bore diameter　d1・d2　[mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05S-C	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06S-C	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-08S-C				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-09S-C				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-10S-C								●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-12S-C											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-14S-C													●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.

【Standard Hole-Drilling Standards】

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959					Models compliant with the new JIS standard (H9) JIS B 1301 1996					Models compliant with the new JIS standard (JS9) JIS B 1301 1996
Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7,H8	ToleranceE9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceH9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceJS9	－	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4^+0.3₀	2-M4	8J	8^+0.022₀	3^±0.0125	9.4^+0.3₀	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4^+0.3₀	2-M4	9J	9^+0.022₀	3^±0.0125	10.4^+0.3₀	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4^+0.3₀	2-M4	10J	10^+0.022₀	3^±0.0125	11.4^+0.3₀	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8^+0.3₀	2-M4	11J	11^+0.018₀	4^±0.0150	12.8^+0.3₀	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.3₀	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8^+0.3₀	2-M4	12J	12^+0.018₀	4^±0.0150	13.8^+0.3₀	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16^+0.3₀	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3^+0.3₀	2-M4	14J	14^+0.018₀	5^±0.0150	16.3^+0.3₀	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17^+0.3₀	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3^+0.3₀	2-M4	15J	15^+0.018₀	5^±0.0150	17.3^+0.3₀	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18^+0.3₀	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3^+0.3₀	2-M4	16J	16^+0.018₀	5^±0.0150	18.3^+0.3₀	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19^+0.3₀	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3^+0.3₀	2-M4	17J	17^+0.018₀	5^±0.0150	19.3^+0.3₀	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20^+0.3₀	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8^+0.3₀	2-M5	18J	18^+0.018₀	6^±0.0150	20.8^+0.3₀	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21^+0.3₀	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8^+0.3₀	2-M5	19J	19^+0.021₀	6^±0.0150	21.8^+0.3₀	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22^+0.3₀	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8^+0.3₀	2-M5	20J	20^+0.021₀	6^±0.0150	22.8^+0.3₀	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25^+0.3₀	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8^+0.3₀	2-M5	22J	22^+0.021₀	6^±0.0150	24.8^+0.3₀	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27^+0.3₀	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3^+0.3₀	2-M6	24J	24^+0.021₀	8^±0.0180	27.3^+0.3₀	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28^+0.3₀	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3^+0.3₀	2-M6	25J	25^+0.021₀	8^±0.0180	28.3^+0.3₀	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31^+0.3₀	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3^+0.3₀	2-M6	28J	28^+0.021₀	8^±0.0180	31.3^+0.3₀	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33^+0.3₀	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3^+0.3₀	2-M6	30J	30^+0.021₀	8^±0.0180	33.3^+0.3₀	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.3₀	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3^+0.3₀	2-M8	32J	32^+0.025₀	10^±0.0180	35.3^+0.3₀	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.3₀	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3^+0.3₀	2-M8	35J	35^+0.025₀	10^±0.0180	38.3^+0.3₀	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.3₀	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3^+0.3₀	2-M8	38J	38^+0.025₀	10^±0.0180	41.3^+0.3₀	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.3₀	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3^+0.3₀	2-M8	40J	40^+0.025₀	12^±0.0215	43.3^+0.3₀	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5^+0.3₀	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3^+0.3₀	2-M8	42J	42^+0.025₀	12^±0.0215	45.3^+0.3₀	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.3₀	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8^+0.3₀	2-M10	45J	45^+0.025₀	14^±0.0215	48.8^+0.3₀	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.3₀	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8^+0.3₀	2-M10	48J	48^+0.025₀	14^±0.0215	51.8^+0.3₀	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.3₀	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8^+0.3₀	2-M10	50J	50^+0.025₀	14^±0.0215	53.8^+0.3₀	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60^+0.3₀	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3^+0.3₀	2-M10	55J	55^+0.030₀	16^±0.0215	59.3^+0.3₀	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61^+0.3₀	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3^+0.3₀	2-M10	56J	56^+0.030₀	16^±0.0215	60.3^+0.3₀	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65^+0.3₀	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4^+0.3₀	2-M10	60J	60^+0.030₀	18^±0.0215	64.4^+0.3₀	2-M10

Models compliant with the new JIS standard (P9) JIS B 1301 1996					Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7，H8	ToleranceP9	^{+ 0.30}₀	－	Nominal bore diameter	－	ToleranceG7，F7	ToleranceH9	－
8P	8 +0.022	3^－0.006_－0.031	9.4^+0.3₀	2-M4	-	-	-	-	-
9P	9 +0.022	3^－0.006_－0.031	10.4^+0.3₀	2-M4	-	-	-	-	-
10P	10 +0.022	3^－0.006_－0.031	11.4^+0.3₀	2-M4	-	-	-	-	-
11P	11+0.018	4^－0.042_－0.012	12.8^+0.3₀	2-M4	-	-	-	-	-
12P	12 +0.018	4^－0.042_－0.012	13.8^+0.3₀	2-M4	-	-	-	-	-
14P	14+0.018	5^－0.042_－0.012	16.3^+0.3₀	2-M4	14N	14^+0.024_+0.006	5+0.030	16.3^+0.3₀	2-M4
15P	15+0.018	5^－0.042_－0.012	17.3^+0.3₀	2-M4	-	-	-	-	-
16P	16+0.018	5^－0.042_－0.012	18.3^+0.3₀	2-M4	-	-	-	-	-
17P	17+0.018	5^－0.042_－0.012	19.3^+0.3₀	2-M4	-	-	-	-	-
18P	18+0.018	6^－0.042_－0.012	20.8^+0.3₀	2-M5	-	-	-	-	-
19P	19 +0.021	6^－0.042_－0.012	21.8^+0.3₀	2-M5	19N	19^+0.028_+0.007	6+0.030	21.8^+0.3₀	2-M5
20P	20 +0.021	6^－0.042_－0.012	22.8^+0.3₀	2-M5	-	-	-	-	-
22P	22 +0.021	6^－0.042_－0.012	24.8^+0.3₀	2-M5	-	-	-	-	-
24P	24 +0.021	8^－0.051_－0.015	27.3^+0.3₀	2-M6	24N	24^+0.028_+0.007	8+0.036	27.3^+0.3₀	2-M6
25P	25 +0.021	8^－0.051_－0.015	28.3^+0.3₀	2-M6	-	-	-	-	-
28P	28 +0.021	8^－0.051_－0.015	31.3^+0.3₀	2-M6	28N	28^+0.028_+0.007	8+0.036	31.3^+0.3₀	2-M6
30P	30 +0.021	8^－0.051_－0.015	33.3^+0.3₀	2-M6	-	-	-	-	-
32P	32 +0.025	10^－0.051_－0.015	35.3^+0.3₀	2-M8	-	-		-
35P	35 +0.025	10^－0.051_－0.015	38.3^+0.3₀	2-M8	-	-	-	-
38P	38 +0.025	10^－0.051_－0.015	41.3^+0.3₀	2-M8	38N	38^+0.050_+0.025	10+0.036	41.3^+0.3₀	2-M8
40P	40 +0.025	12^－0.061_－0.018	43.3^+0.3₀	2-M8	-	-	-	-	-
42P	42 +0.025	12^－0.061_－0.018	45.3^+0.3₀	2-M8	42N	42^+0.050_+0.025	12+0.043	45.3^+0.3₀	2-M8
45P	45 +0.025	14^－0.061_－0.018	48.8^+0.3₀	2-M10	-	-	-	-	-
48P	48 +0.025	14^－0.061_－0.018	51.8^+0.3₀	2-M10	48N	48^+0.050_+0.025	14+0.043	51.8^+0.3₀	2-M10
50P	50 +0.025	14^－0.061_－0.018	53.8^+0.3₀	2-M10	-	-	-	-	-
55P	55 +0.030	16^－0.061_－0.018	59.3^+0.3₀	2-M10	55N	55^+0.060_+0.030	16+0.043	59.3^+0.3₀	2-M10
56P	56 +0.030	16^－0.061_－0.018	60.3^+0.3₀	2-M10	-	-	-	-	-
60P	60 +0.030	18^－0.061_－0.018	64.4^+0.3₀	2-M10	60N	60^+0.060_+0.030	18+0.043	64.4^+0.3₀	2-M10

※Positions of set screws and keyways are not on the same plane.

※Set screws are included with the product.

※Positioning precision for keyway milling is determined by sight.

※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.

※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.

【Set screw position】

Model	Distance from edge [mm]
SFS-05	7
SFS-06	9
SFS-08	10
SFS-09	10
SFS-10	12
SFS-12	12
SFS-14	15

SFS-□W Types

[Specifications]

Model	Rated torque［N・m］	Misalignment			Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg・m²］	Mass［kg］
Model	Rated torque［N・m］	Parallel［mm］	Angular［°］	Axial［mm］	Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg・m²］	Mass［kg］
SFS-05W	20	0.2	1(On one side)	±1.2	10000	8000	21	0.14×10^-3	0.40
SFS-06W	40	0.3	1(On one side)	±1.6	8000	14000	22	0.41×10^-3	0.70
SFS-08W	80	0.3	1(On one side)	±2.0	6800	41000	30	1.10×10^-3	1.30
SFS-09W	180	0.5	1(On one side)	±2.4	6000	85000	61	2.20×10^-3	2.10
SFS-10W	250	0.5	1(On one side)	±2.8	5200	125000	80	3.60×10^-3	2.80
SFS-12W	450	0.6	1(On one side)	±3.2	4400	215000	98	9.20×10^-3	4.90
SFS-14W	800	0.7	1(On one side)	±3.6	3800	390000	156	15.00×10^-3	7.10

*Max. rotation speed does not take into account dynamic balance.

*The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Unit [mm]

Model	d1・d2			D	N	L	LF	LP	S	F	d3	K	M
Model	Pilot bore	Min.	Max.	D	N	L	LF	LP	S	F	d3	K	M
SFS-05W	7	8	20	56	32	58	20	8	5	4	20	24	8-M5×15
SFS-06W	7	8	25	68	40	74	25	12	6	3	24	30	8-M6×18
SFS-08W	10	11	35	82	54	84	30	12	6	2	28	38	8-M6×20
SFS-09W	10	11	38	94	58	98	30	22	8	12	32	42	8-M8×27
SFS-10W	15	16	42	104	68	110	35	20	10	7	34	48	8-M8×27
SFS-12W	18	19	50	126	78	127	40	25	11	10	40	54	8-M10×32
SFS-14W	20	22	60	144	88	144	45	30	12	15	46	61	8-M12×38

*Pilot bores are to be drilled into the part.

*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

[Standard bore diameter]

Model	Standard bore diameter　d1・d2　[mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05W	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06W	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-08W				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-09W				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-10W								●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-12W											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-14W													●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.

【Standard Hole-Drilling Standards】

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959					Models compliant with the new JIS standard (H9) JIS B 1301 1996					Models compliant with the new JIS standard (JS9) JIS B 1301 1996
Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7,H8	ToleranceE9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceH9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceJS9	－	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4^+0.3₀	2-M4	8J	8^+0.022₀	3^±0.0125	9.4^+0.3₀	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4^+0.3₀	2-M4	9J	9^+0.022₀	3^±0.0125	10.4^+0.3₀	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4^+0.3₀	2-M4	10J	10^+0.022₀	3^±0.0125	11.4^+0.3₀	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8^+0.3₀	2-M4	11J	11^+0.018₀	4^±0.0150	12.8^+0.3₀	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.3₀	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8^+0.3₀	2-M4	12J	12^+0.018₀	4^±0.0150	13.8^+0.3₀	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16^+0.3₀	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3^+0.3₀	2-M4	14J	14^+0.018₀	5^±0.0150	16.3^+0.3₀	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17^+0.3₀	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3^+0.3₀	2-M4	15J	15^+0.018₀	5^±0.0150	17.3^+0.3₀	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18^+0.3₀	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3^+0.3₀	2-M4	16J	16^+0.018₀	5^±0.0150	18.3^+0.3₀	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19^+0.3₀	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3^+0.3₀	2-M4	17J	17^+0.018₀	5^±0.0150	19.3^+0.3₀	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20^+0.3₀	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8^+0.3₀	2-M5	18J	18^+0.018₀	6^±0.0150	20.8^+0.3₀	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21^+0.3₀	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8^+0.3₀	2-M5	19J	19^+0.021₀	6^±0.0150	21.8^+0.3₀	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22^+0.3₀	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8^+0.3₀	2-M5	20J	20^+0.021₀	6^±0.0150	22.8^+0.3₀	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25^+0.3₀	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8^+0.3₀	2-M5	22J	22^+0.021₀	6^±0.0150	24.8^+0.3₀	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27^+0.3₀	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3^+0.3₀	2-M6	24J	24^+0.021₀	8^±0.0180	27.3^+0.3₀	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28^+0.3₀	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3^+0.3₀	2-M6	25J	25^+0.021₀	8^±0.0180	28.3^+0.3₀	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31^+0.3₀	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3^+0.3₀	2-M6	28J	28^+0.021₀	8^±0.0180	31.3^+0.3₀	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33^+0.3₀	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3^+0.3₀	2-M6	30J	30^+0.021₀	8^±0.0180	33.3^+0.3₀	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.3₀	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3^+0.3₀	2-M8	32J	32^+0.025₀	10^±0.0180	35.3^+0.3₀	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.3₀	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3^+0.3₀	2-M8	35J	35^+0.025₀	10^±0.0180	38.3^+0.3₀	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.3₀	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3^+0.3₀	2-M8	38J	38^+0.025₀	10^±0.0180	41.3^+0.3₀	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.3₀	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3^+0.3₀	2-M8	40J	40^+0.025₀	12^±0.0215	43.3^+0.3₀	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5^+0.3₀	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3^+0.3₀	2-M8	42J	42^+0.025₀	12^±0.0215	45.3^+0.3₀	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.3₀	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8^+0.3₀	2-M10	45J	45^+0.025₀	14^±0.0215	48.8^+0.3₀	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.3₀	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8^+0.3₀	2-M10	48J	48^+0.025₀	14^±0.0215	51.8^+0.3₀	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.3₀	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8^+0.3₀	2-M10	50J	50^+0.025₀	14^±0.0215	53.8^+0.3₀	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60^+0.3₀	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3^+0.3₀	2-M10	55J	55^+0.030₀	16^±0.0215	59.3^+0.3₀	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61^+0.3₀	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3^+0.3₀	2-M10	56J	56^+0.030₀	16^±0.0215	60.3^+0.3₀	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65^+0.3₀	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4^+0.3₀	2-M10	60J	60^+0.030₀	18^±0.0215	64.4^+0.3₀	2-M10

Models compliant with the new JIS standard (P9) JIS B 1301 1996					Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7，H8	ToleranceP9	^{+ 0.30}₀	－	Nominal bore diameter	－	ToleranceG7，F7	ToleranceH9	－
8P	8 +0.022	3^－0.006_－0.031	9.4^+0.3₀	2-M4	-	-	-	-	-
9P	9 +0.022	3^－0.006_－0.031	10.4^+0.3₀	2-M4	-	-	-	-	-
10P	10 +0.022	3^－0.006_－0.031	11.4^+0.3₀	2-M4	-	-	-	-	-
11P	11+0.018	4^－0.042_－0.012	12.8^+0.3₀	2-M4	-	-	-	-	-
12P	12 +0.018	4^－0.042_－0.012	13.8^+0.3₀	2-M4	-	-	-	-	-
14P	14+0.018	5^－0.042_－0.012	16.3^+0.3₀	2-M4	14N	14^+0.024_+0.006	5+0.030	16.3^+0.3₀	2-M4
15P	15+0.018	5^－0.042_－0.012	17.3^+0.3₀	2-M4	-	-	-	-	-
16P	16+0.018	5^－0.042_－0.012	18.3^+0.3₀	2-M4	-	-	-	-	-
17P	17+0.018	5^－0.042_－0.012	19.3^+0.3₀	2-M4	-	-	-	-	-
18P	18+0.018	6^－0.042_－0.012	20.8^+0.3₀	2-M5	-	-	-	-	-
19P	19 +0.021	6^－0.042_－0.012	21.8^+0.3₀	2-M5	19N	19^+0.028_+0.007	6+0.030	21.8^+0.3₀	2-M5
20P	20 +0.021	6^－0.042_－0.012	22.8^+0.3₀	2-M5	-	-	-	-	-
22P	22 +0.021	6^－0.042_－0.012	24.8^+0.3₀	2-M5	-	-	-	-	-
24P	24 +0.021	8^－0.051_－0.015	27.3^+0.3₀	2-M6	24N	24^+0.028_+0.007	8+0.036	27.3^+0.3₀	2-M6
25P	25 +0.021	8^－0.051_－0.015	28.3^+0.3₀	2-M6	-	-	-	-	-
28P	28 +0.021	8^－0.051_－0.015	31.3^+0.3₀	2-M6	28N	28^+0.028_+0.007	8+0.036	31.3^+0.3₀	2-M6
30P	30 +0.021	8^－0.051_－0.015	33.3^+0.3₀	2-M6	-	-	-	-	-
32P	32 +0.025	10^－0.051_－0.015	35.3^+0.3₀	2-M8	-	-		-
35P	35 +0.025	10^－0.051_－0.015	38.3^+0.3₀	2-M8	-	-	-	-
38P	38 +0.025	10^－0.051_－0.015	41.3^+0.3₀	2-M8	38N	38^+0.050_+0.025	10+0.036	41.3^+0.3₀	2-M8
40P	40 +0.025	12^－0.061_－0.018	43.3^+0.3₀	2-M8	-	-	-	-	-
42P	42 +0.025	12^－0.061_－0.018	45.3^+0.3₀	2-M8	42N	42^+0.050_+0.025	12+0.043	45.3^+0.3₀	2-M8
45P	45 +0.025	14^－0.061_－0.018	48.8^+0.3₀	2-M10	-	-	-	-	-
48P	48 +0.025	14^－0.061_－0.018	51.8^+0.3₀	2-M10	48N	48^+0.050_+0.025	14+0.043	51.8^+0.3₀	2-M10
50P	50 +0.025	14^－0.061_－0.018	53.8^+0.3₀	2-M10	-	-	-	-	-
55P	55 +0.030	16^－0.061_－0.018	59.3^+0.3₀	2-M10	55N	55^+0.060_+0.030	16+0.043	59.3^+0.3₀	2-M10
56P	56 +0.030	16^－0.061_－0.018	60.3^+0.3₀	2-M10	-	-	-	-	-
60P	60 +0.030	18^－0.061_－0.018	64.4^+0.3₀	2-M10	60N	60^+0.060_+0.030	18+0.043	64.4^+0.3₀	2-M10

※Positions of set screws and keyways are not on the same plane.

※Set screws are included with the product.

※Positioning precision for keyway milling is determined by sight.

※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.

※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.

【Set screw position】

Model	Distance from edge [mm]
SFS-05	7
SFS-06	9
SFS-08	10
SFS-09	10
SFS-10	12
SFS-12	12
SFS-14	15

SFS-□W (C) Types

[Specifications]

Model	Rated torque［N・m］	Misalignment			Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg･m²］	Mass［kg］
Model	Rated torque［N・m］	Parallel［mm］	Angular［°］	Axial［mm］	Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg･m²］	Mass［kg］
SFS-05W-C	15	0.2	1(On one side)	±1.2	10000	8000	21	0.14×10^-3	0.40
SFS-06W-C	30	0.3	1(On one side)	±1.6	8000	14000	22	0.41×10^-3	0.70
SFS-08W-C	60	0.3	1(On one side)	±2.0	6800	41000	30	1.10×10^-3	1.30
SFS-09W-C	135	0.5	1(On one side)	±2.4	6000	85000	61	2.20×10^-3	2.10
SFS-10W-C	190	0.5	1(On one side)	±2.8	5200	125000	80	3.60×10^-3	2.80
SFS-12W-C	340	0.6	1(On one side)	±3.2	4400	215000	98	9.20×10^-3	4.90
SFS-14W-C	600	0.7	1(On one side)	±3.6	3800	390000	156	15.00×10^-3	7.10

*Max. rotation speed does not take into account dynamic balance.

*The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Unit [mm]

Model	d1・d2		D	N	L	LF	LP	S	F	d3	K	M
Model	Min.	Max.	D	N	L	LF	LP	S	F	d3	K	M
SFS-05W-C	8	20	56	32	58	20	8	5	4	20	24	8-M5×15
SFS-06W-C	8	25	68	40	74	25	12	6	3	24	30	8-M6×18
SFS-08W-C	11	35	82	54	84	30	12	6	2	28	38	8-M6×20
SFS-09W-C	11	38	94	58	98	30	22	8	12	32	42	8-M8×27
SFS-10W-C	16	42	104	68	110	35	20	10	7	34	48	8-M8×27
SFS-12W-C	19	50	126	78	127	40	25	11	10	40	54	8-M10×32
SFS-14W-C	22	60	144	88	144	45	30	12	15	46	61	8-M12×38

*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

[Standard bore diameter]

Model	Standard bore diameter　d1・d2　[mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05W-C	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06W-C	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-08W-C				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-09W-C				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-10W-C								●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-12W-C											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-14W-C													●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.

【Standard Hole-Drilling Standards】

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959					Models compliant with the new JIS standard (H9) JIS B 1301 1996					Models compliant with the new JIS standard (JS9) JIS B 1301 1996
Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7,H8	ToleranceE9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceH9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceJS9	－	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4^+0.3₀	2-M4	8J	8^+0.022₀	3^±0.0125	9.4^+0.3₀	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4^+0.3₀	2-M4	9J	9^+0.022₀	3^±0.0125	10.4^+0.3₀	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4^+0.3₀	2-M4	10J	10^+0.022₀	3^±0.0125	11.4^+0.3₀	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8^+0.3₀	2-M4	11J	11^+0.018₀	4^±0.0150	12.8^+0.3₀	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.3₀	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8^+0.3₀	2-M4	12J	12^+0.018₀	4^±0.0150	13.8^+0.3₀	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16^+0.3₀	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3^+0.3₀	2-M4	14J	14^+0.018₀	5^±0.0150	16.3^+0.3₀	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17^+0.3₀	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3^+0.3₀	2-M4	15J	15^+0.018₀	5^±0.0150	17.3^+0.3₀	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18^+0.3₀	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3^+0.3₀	2-M4	16J	16^+0.018₀	5^±0.0150	18.3^+0.3₀	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19^+0.3₀	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3^+0.3₀	2-M4	17J	17^+0.018₀	5^±0.0150	19.3^+0.3₀	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20^+0.3₀	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8^+0.3₀	2-M5	18J	18^+0.018₀	6^±0.0150	20.8^+0.3₀	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21^+0.3₀	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8^+0.3₀	2-M5	19J	19^+0.021₀	6^±0.0150	21.8^+0.3₀	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22^+0.3₀	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8^+0.3₀	2-M5	20J	20^+0.021₀	6^±0.0150	22.8^+0.3₀	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25^+0.3₀	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8^+0.3₀	2-M5	22J	22^+0.021₀	6^±0.0150	24.8^+0.3₀	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27^+0.3₀	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3^+0.3₀	2-M6	24J	24^+0.021₀	8^±0.0180	27.3^+0.3₀	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28^+0.3₀	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3^+0.3₀	2-M6	25J	25^+0.021₀	8^±0.0180	28.3^+0.3₀	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31^+0.3₀	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3^+0.3₀	2-M6	28J	28^+0.021₀	8^±0.0180	31.3^+0.3₀	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33^+0.3₀	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3^+0.3₀	2-M6	30J	30^+0.021₀	8^±0.0180	33.3^+0.3₀	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.3₀	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3^+0.3₀	2-M8	32J	32^+0.025₀	10^±0.0180	35.3^+0.3₀	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.3₀	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3^+0.3₀	2-M8	35J	35^+0.025₀	10^±0.0180	38.3^+0.3₀	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.3₀	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3^+0.3₀	2-M8	38J	38^+0.025₀	10^±0.0180	41.3^+0.3₀	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.3₀	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3^+0.3₀	2-M8	40J	40^+0.025₀	12^±0.0215	43.3^+0.3₀	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5^+0.3₀	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3^+0.3₀	2-M8	42J	42^+0.025₀	12^±0.0215	45.3^+0.3₀	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.3₀	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8^+0.3₀	2-M10	45J	45^+0.025₀	14^±0.0215	48.8^+0.3₀	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.3₀	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8^+0.3₀	2-M10	48J	48^+0.025₀	14^±0.0215	51.8^+0.3₀	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.3₀	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8^+0.3₀	2-M10	50J	50^+0.025₀	14^±0.0215	53.8^+0.3₀	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60^+0.3₀	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3^+0.3₀	2-M10	55J	55^+0.030₀	16^±0.0215	59.3^+0.3₀	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61^+0.3₀	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3^+0.3₀	2-M10	56J	56^+0.030₀	16^±0.0215	60.3^+0.3₀	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65^+0.3₀	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4^+0.3₀	2-M10	60J	60^+0.030₀	18^±0.0215	64.4^+0.3₀	2-M10

Models compliant with the new JIS standard (P9) JIS B 1301 1996					Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7，H8	ToleranceP9	^{+ 0.30}₀	－	Nominal bore diameter	－	ToleranceG7，F7	ToleranceH9	－
8P	8 +0.022	3^－0.006_－0.031	9.4^+0.3₀	2-M4	-	-	-	-	-
9P	9 +0.022	3^－0.006_－0.031	10.4^+0.3₀	2-M4	-	-	-	-	-
10P	10 +0.022	3^－0.006_－0.031	11.4^+0.3₀	2-M4	-	-	-	-	-
11P	11+0.018	4^－0.042_－0.012	12.8^+0.3₀	2-M4	-	-	-	-	-
12P	12 +0.018	4^－0.042_－0.012	13.8^+0.3₀	2-M4	-	-	-	-	-
14P	14+0.018	5^－0.042_－0.012	16.3^+0.3₀	2-M4	14N	14^+0.024_+0.006	5+0.030	16.3^+0.3₀	2-M4
15P	15+0.018	5^－0.042_－0.012	17.3^+0.3₀	2-M4	-	-	-	-	-
16P	16+0.018	5^－0.042_－0.012	18.3^+0.3₀	2-M4	-	-	-	-	-
17P	17+0.018	5^－0.042_－0.012	19.3^+0.3₀	2-M4	-	-	-	-	-
18P	18+0.018	6^－0.042_－0.012	20.8^+0.3₀	2-M5	-	-	-	-	-
19P	19 +0.021	6^－0.042_－0.012	21.8^+0.3₀	2-M5	19N	19^+0.028_+0.007	6+0.030	21.8^+0.3₀	2-M5
20P	20 +0.021	6^－0.042_－0.012	22.8^+0.3₀	2-M5	-	-	-	-	-
22P	22 +0.021	6^－0.042_－0.012	24.8^+0.3₀	2-M5	-	-	-	-	-
24P	24 +0.021	8^－0.051_－0.015	27.3^+0.3₀	2-M6	24N	24^+0.028_+0.007	8+0.036	27.3^+0.3₀	2-M6
25P	25 +0.021	8^－0.051_－0.015	28.3^+0.3₀	2-M6	-	-	-	-	-
28P	28 +0.021	8^－0.051_－0.015	31.3^+0.3₀	2-M6	28N	28^+0.028_+0.007	8+0.036	31.3^+0.3₀	2-M6
30P	30 +0.021	8^－0.051_－0.015	33.3^+0.3₀	2-M6	-	-	-	-	-
32P	32 +0.025	10^－0.051_－0.015	35.3^+0.3₀	2-M8	-	-		-
35P	35 +0.025	10^－0.051_－0.015	38.3^+0.3₀	2-M8	-	-	-	-
38P	38 +0.025	10^－0.051_－0.015	41.3^+0.3₀	2-M8	38N	38^+0.050_+0.025	10+0.036	41.3^+0.3₀	2-M8
40P	40 +0.025	12^－0.061_－0.018	43.3^+0.3₀	2-M8	-	-	-	-	-
42P	42 +0.025	12^－0.061_－0.018	45.3^+0.3₀	2-M8	42N	42^+0.050_+0.025	12+0.043	45.3^+0.3₀	2-M8
45P	45 +0.025	14^－0.061_－0.018	48.8^+0.3₀	2-M10	-	-	-	-	-
48P	48 +0.025	14^－0.061_－0.018	51.8^+0.3₀	2-M10	48N	48^+0.050_+0.025	14+0.043	51.8^+0.3₀	2-M10
50P	50 +0.025	14^－0.061_－0.018	53.8^+0.3₀	2-M10	-	-	-	-	-
55P	55 +0.030	16^－0.061_－0.018	59.3^+0.3₀	2-M10	55N	55^+0.060_+0.030	16+0.043	59.3^+0.3₀	2-M10
56P	56 +0.030	16^－0.061_－0.018	60.3^+0.3₀	2-M10	-	-	-	-	-
60P	60 +0.030	18^－0.061_－0.018	64.4^+0.3₀	2-M10	60N	60^+0.060_+0.030	18+0.043	64.4^+0.3₀	2-M10

※Positions of set screws and keyways are not on the same plane.

※Set screws are included with the product.

※Positioning precision for keyway milling is determined by sight.

※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.

※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.

【Set screw position】

Model	Distance from edge [mm]
SFS-05	7
SFS-06	9
SFS-08	10
SFS-09	10
SFS-10	12
SFS-12	12
SFS-14	15

SFS-□G Types

[Specifications]

Model	Rated torque［N・m］	Misalignment			Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg･m²］	Mass［kg］
Model	Rated torque［N・m］	Parallel［mm］	Angular［°］	Axial［mm］	Max. rotation speed［min^-1］	Torsional stiffness［N・m/rad］	Axial stiffness［N/mm］	Moment of inertia［kg･m²］	Mass［kg］
SFS-05G	20	0.5	1(On one side)	±1.2	20000	8000	21	0.20×10^-3	0.50
SFS-06G	40	0.5	1(On one side)	±1.6	16000	14000	22	0.55×10^-3	0.90
SFS-08G	80	0.5	1(On one side)	±2.0	13000	41000	30	1.50×10^-3	1.70
SFS-09G	180	0.6	1(On one side)	±2.4	12000	85000	61	2.90×10^-3	2.40
SFS-10G	250	0.6	1(On one side)	±2.8	10000	125000	80	4.60×10^-3	3.30
SFS-12G	450	0.8	1(On one side)	±3.2	8000	215000	98	11.80×10^-3	5.80
SFS-14G	800	0.9	1(On one side)	±3.6	7000	390000	156	21.20×10^-3	8.60

*Max. rotation speed does not take into account dynamic balance.

*The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Unit [mm]

Model	d1・d2			D	N	L	LF	LS	S	F	K	M
Model	Pilot bore	Min.	Max.	D	N	L	LF	LS	S	F	K	M
SFS-05G	7	8	20	56	32	74	20	24	5	11	24	8-M5×22
SFS-06G	7	8	25	68	40	86	25	24	6	10	30	8-M6×25
SFS-08G	10	11	35	82	54	98	30	26	6	11	38	8-M6×29
SFS-09G	10	11	38	94	58	106	30	30	8	21	42	8-M8×36
SFS-10G	15	16	42	104	68	120	35	30	10	16	48	8-M8×36
SFS-12G	18	19	50	126	78	140	40	38	11	23	54	8-M10×45
SFS-14G	20	22	60	144	88	160	45	46	12	31	61	8-M12×54

*Pilot bores are to be drilled into the part.

*If you require a product with an LS dimension that exceeds those above, contact Miki Pulley with your required dimension [mm]. Please contact Miki Pulley for assistance if the LS dimension is less than those

*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

[Standard bore diameter]

Model	Standard bore diameter　d1・d2　[mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05G	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06G	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-08G				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-09G				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-10G								●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-12G											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-14G													●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.

【Standard Hole-Drilling Standards】

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959					Models compliant with the new JIS standard (H9) JIS B 1301 1996					Models compliant with the new JIS standard (JS9) JIS B 1301 1996
Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7,H8	ToleranceE9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceH9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceJS9	－	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4^+0.3₀	2-M4	8J	8^+0.022₀	3^±0.0125	9.4^+0.3₀	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4^+0.3₀	2-M4	9J	9^+0.022₀	3^±0.0125	10.4^+0.3₀	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4^+0.3₀	2-M4	10J	10^+0.022₀	3^±0.0125	11.4^+0.3₀	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8^+0.3₀	2-M4	11J	11^+0.018₀	4^±0.0150	12.8^+0.3₀	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.3₀	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8^+0.3₀	2-M4	12J	12^+0.018₀	4^±0.0150	13.8^+0.3₀	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16^+0.3₀	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3^+0.3₀	2-M4	14J	14^+0.018₀	5^±0.0150	16.3^+0.3₀	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17^+0.3₀	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3^+0.3₀	2-M4	15J	15^+0.018₀	5^±0.0150	17.3^+0.3₀	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18^+0.3₀	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3^+0.3₀	2-M4	16J	16^+0.018₀	5^±0.0150	18.3^+0.3₀	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19^+0.3₀	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3^+0.3₀	2-M4	17J	17^+0.018₀	5^±0.0150	19.3^+0.3₀	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20^+0.3₀	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8^+0.3₀	2-M5	18J	18^+0.018₀	6^±0.0150	20.8^+0.3₀	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21^+0.3₀	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8^+0.3₀	2-M5	19J	19^+0.021₀	6^±0.0150	21.8^+0.3₀	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22^+0.3₀	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8^+0.3₀	2-M5	20J	20^+0.021₀	6^±0.0150	22.8^+0.3₀	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25^+0.3₀	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8^+0.3₀	2-M5	22J	22^+0.021₀	6^±0.0150	24.8^+0.3₀	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27^+0.3₀	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3^+0.3₀	2-M6	24J	24^+0.021₀	8^±0.0180	27.3^+0.3₀	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28^+0.3₀	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3^+0.3₀	2-M6	25J	25^+0.021₀	8^±0.0180	28.3^+0.3₀	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31^+0.3₀	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3^+0.3₀	2-M6	28J	28^+0.021₀	8^±0.0180	31.3^+0.3₀	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33^+0.3₀	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3^+0.3₀	2-M6	30J	30^+0.021₀	8^±0.0180	33.3^+0.3₀	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.3₀	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3^+0.3₀	2-M8	32J	32^+0.025₀	10^±0.0180	35.3^+0.3₀	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.3₀	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3^+0.3₀	2-M8	35J	35^+0.025₀	10^±0.0180	38.3^+0.3₀	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.3₀	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3^+0.3₀	2-M8	38J	38^+0.025₀	10^±0.0180	41.3^+0.3₀	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.3₀	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3^+0.3₀	2-M8	40J	40^+0.025₀	12^±0.0215	43.3^+0.3₀	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5^+0.3₀	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3^+0.3₀	2-M8	42J	42^+0.025₀	12^±0.0215	45.3^+0.3₀	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.3₀	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8^+0.3₀	2-M10	45J	45^+0.025₀	14^±0.0215	48.8^+0.3₀	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.3₀	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8^+0.3₀	2-M10	48J	48^+0.025₀	14^±0.0215	51.8^+0.3₀	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.3₀	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8^+0.3₀	2-M10	50J	50^+0.025₀	14^±0.0215	53.8^+0.3₀	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60^+0.3₀	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3^+0.3₀	2-M10	55J	55^+0.030₀	16^±0.0215	59.3^+0.3₀	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61^+0.3₀	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3^+0.3₀	2-M10	56J	56^+0.030₀	16^±0.0215	60.3^+0.3₀	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65^+0.3₀	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4^+0.3₀	2-M10	60J	60^+0.030₀	18^±0.0215	64.4^+0.3₀	2-M10

Models compliant with the new JIS standard (P9) JIS B 1301 1996					Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7，H8	ToleranceP9	^{+ 0.30}₀	－	Nominal bore diameter	－	ToleranceG7，F7	ToleranceH9	－
8P	8 +0.022	3^－0.006_－0.031	9.4^+0.3₀	2-M4	-	-	-	-	-
9P	9 +0.022	3^－0.006_－0.031	10.4^+0.3₀	2-M4	-	-	-	-	-
10P	10 +0.022	3^－0.006_－0.031	11.4^+0.3₀	2-M4	-	-	-	-	-
11P	11+0.018	4^－0.042_－0.012	12.8^+0.3₀	2-M4	-	-	-	-	-
12P	12 +0.018	4^－0.042_－0.012	13.8^+0.3₀	2-M4	-	-	-	-	-
14P	14+0.018	5^－0.042_－0.012	16.3^+0.3₀	2-M4	14N	14^+0.024_+0.006	5+0.030	16.3^+0.3₀	2-M4
15P	15+0.018	5^－0.042_－0.012	17.3^+0.3₀	2-M4	-	-	-	-	-
16P	16+0.018	5^－0.042_－0.012	18.3^+0.3₀	2-M4	-	-	-	-	-
17P	17+0.018	5^－0.042_－0.012	19.3^+0.3₀	2-M4	-	-	-	-	-
18P	18+0.018	6^－0.042_－0.012	20.8^+0.3₀	2-M5	-	-	-	-	-
19P	19 +0.021	6^－0.042_－0.012	21.8^+0.3₀	2-M5	19N	19^+0.028_+0.007	6+0.030	21.8^+0.3₀	2-M5
20P	20 +0.021	6^－0.042_－0.012	22.8^+0.3₀	2-M5	-	-	-	-	-
22P	22 +0.021	6^－0.042_－0.012	24.8^+0.3₀	2-M5	-	-	-	-	-
24P	24 +0.021	8^－0.051_－0.015	27.3^+0.3₀	2-M6	24N	24^+0.028_+0.007	8+0.036	27.3^+0.3₀	2-M6
25P	25 +0.021	8^－0.051_－0.015	28.3^+0.3₀	2-M6	-	-	-	-	-
28P	28 +0.021	8^－0.051_－0.015	31.3^+0.3₀	2-M6	28N	28^+0.028_+0.007	8+0.036	31.3^+0.3₀	2-M6
30P	30 +0.021	8^－0.051_－0.015	33.3^+0.3₀	2-M6	-	-	-	-	-
32P	32 +0.025	10^－0.051_－0.015	35.3^+0.3₀	2-M8	-	-		-
35P	35 +0.025	10^－0.051_－0.015	38.3^+0.3₀	2-M8	-	-	-	-
38P	38 +0.025	10^－0.051_－0.015	41.3^+0.3₀	2-M8	38N	38^+0.050_+0.025	10+0.036	41.3^+0.3₀	2-M8
40P	40 +0.025	12^－0.061_－0.018	43.3^+0.3₀	2-M8	-	-	-	-	-
42P	42 +0.025	12^－0.061_－0.018	45.3^+0.3₀	2-M8	42N	42^+0.050_+0.025	12+0.043	45.3^+0.3₀	2-M8
45P	45 +0.025	14^－0.061_－0.018	48.8^+0.3₀	2-M10	-	-	-	-	-
48P	48 +0.025	14^－0.061_－0.018	51.8^+0.3₀	2-M10	48N	48^+0.050_+0.025	14+0.043	51.8^+0.3₀	2-M10
50P	50 +0.025	14^－0.061_－0.018	53.8^+0.3₀	2-M10	-	-	-	-	-
55P	55 +0.030	16^－0.061_－0.018	59.3^+0.3₀	2-M10	55N	55^+0.060_+0.030	16+0.043	59.3^+0.3₀	2-M10
56P	56 +0.030	16^－0.061_－0.018	60.3^+0.3₀	2-M10	-	-	-	-	-
60P	60 +0.030	18^－0.061_－0.018	64.4^+0.3₀	2-M10	60N	60^+0.060_+0.030	18+0.043	64.4^+0.3₀	2-M10

※Positions of set screws and keyways are not on the same plane.

※Set screws are included with the product.

※Positioning precision for keyway milling is determined by sight.

※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.

※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.

【Set screw position】

Model	Distance from edge [mm]
SFS-05	7
SFS-06	9
SFS-08	10
SFS-09	10
SFS-10	12
SFS-12	12
SFS-14	15

SFS-□G (C) Types

[Specifications]

[Dimensions]

Unit [mm]

Model	d1・d2			D	N	L	LF	LS	S	F	K	M
Model	Pilot bore	Min.	Max.	D	N	L	LF	LS	S	F	K	M
SFS-05G-C	7	8	20	56	32	74	20	24	5	11	24	8-M5×22
SFS-06G-C	7	8	25	68	40	86	25	24	6	10	30	8-M6×25
SFS-08G-C	10	11	35	82	54	98	30	26	6	11	38	8-M6×29
SFS-09G-C	10	11	38	94	58	106	30	30	8	21	42	8-M8×36
SFS-10G-C	15	16	42	104	68	120	35	30	10	16	48	8-M8×36
SFS-12G-C	18	19	50	126	78	140	40	38	11	23	54	8-M10×45
SFS-14G-C	20	22	60	144	88	160	45	46	12	31	61	8-M12×54

* If you require a product with an LS dimension that exceeds those above, contact Miki Pulley with your required dimension [mm]. Please contact Miki Pulley for assistance if the LS dimension is less than thoseabove or if LS ≧ 1000.

* Please note that when the LS dimension exceeds 100 mm with the electroless nickel plating specification (SFS- □ G-C), the insertion length of the shaft cannot exceed the LS dimension.

* The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

[Standard bore diameter]

Model	Standard bore diameter　d1・d2　[mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05G-C	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06G-C	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-08G-C				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-09G-C				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-10G-C								●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-12G-C											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFS-14G-C													●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information

【Standard Hole-Drilling Standards】

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959					Models compliant with the new JIS standard (H9) JIS B 1301 1996					Models compliant with the new JIS standard (JS9) JIS B 1301 1996
Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway height（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7,H8	ToleranceE9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceH9	－	－	Nominal bore diameter	ToleranceH7,H8	ToleranceJS9	－	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4^+0.3₀	2-M4	8J	8^+0.022₀	3^±0.0125	9.4^+0.3₀	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4^+0.3₀	2-M4	9J	9^+0.022₀	3^±0.0125	10.4^+0.3₀	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4^+0.3₀	2-M4	10J	10^+0.022₀	3^±0.0125	11.4^+0.3₀	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8^+0.3₀	2-M4	11J	11^+0.018₀	4^±0.0150	12.8^+0.3₀	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.3₀	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8^+0.3₀	2-M4	12J	12^+0.018₀	4^±0.0150	13.8^+0.3₀	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16^+0.3₀	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3^+0.3₀	2-M4	14J	14^+0.018₀	5^±0.0150	16.3^+0.3₀	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17^+0.3₀	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3^+0.3₀	2-M4	15J	15^+0.018₀	5^±0.0150	17.3^+0.3₀	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18^+0.3₀	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3^+0.3₀	2-M4	16J	16^+0.018₀	5^±0.0150	18.3^+0.3₀	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19^+0.3₀	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3^+0.3₀	2-M4	17J	17^+0.018₀	5^±0.0150	19.3^+0.3₀	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20^+0.3₀	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8^+0.3₀	2-M5	18J	18^+0.018₀	6^±0.0150	20.8^+0.3₀	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21^+0.3₀	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8^+0.3₀	2-M5	19J	19^+0.021₀	6^±0.0150	21.8^+0.3₀	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22^+0.3₀	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8^+0.3₀	2-M5	20J	20^+0.021₀	6^±0.0150	22.8^+0.3₀	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25^+0.3₀	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8^+0.3₀	2-M5	22J	22^+0.021₀	6^±0.0150	24.8^+0.3₀	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27^+0.3₀	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3^+0.3₀	2-M6	24J	24^+0.021₀	8^±0.0180	27.3^+0.3₀	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28^+0.3₀	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3^+0.3₀	2-M6	25J	25^+0.021₀	8^±0.0180	28.3^+0.3₀	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31^+0.3₀	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3^+0.3₀	2-M6	28J	28^+0.021₀	8^±0.0180	31.3^+0.3₀	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33^+0.3₀	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3^+0.3₀	2-M6	30J	30^+0.021₀	8^±0.0180	33.3^+0.3₀	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.3₀	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3^+0.3₀	2-M8	32J	32^+0.025₀	10^±0.0180	35.3^+0.3₀	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.3₀	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3^+0.3₀	2-M8	35J	35^+0.025₀	10^±0.0180	38.3^+0.3₀	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.3₀	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3^+0.3₀	2-M8	38J	38^+0.025₀	10^±0.0180	41.3^+0.3₀	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.3₀	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3^+0.3₀	2-M8	40J	40^+0.025₀	12^±0.0215	43.3^+0.3₀	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5^+0.3₀	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3^+0.3₀	2-M8	42J	42^+0.025₀	12^±0.0215	45.3^+0.3₀	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.3₀	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8^+0.3₀	2-M10	45J	45^+0.025₀	14^±0.0215	48.8^+0.3₀	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.3₀	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8^+0.3₀	2-M10	48J	48^+0.025₀	14^±0.0215	51.8^+0.3₀	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.3₀	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8^+0.3₀	2-M10	50J	50^+0.025₀	14^±0.0215	53.8^+0.3₀	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60^+0.3₀	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3^+0.3₀	2-M10	55J	55^+0.030₀	16^±0.0215	59.3^+0.3₀	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61^+0.3₀	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3^+0.3₀	2-M10	56J	56^+0.030₀	16^±0.0215	60.3^+0.3₀	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65^+0.3₀	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4^+0.3₀	2-M10	60J	60^+0.030₀	18^±0.0215	64.4^+0.3₀	2-M10

Models compliant with the new JIS standard (P9) JIS B 1301 1996					Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）	Nominal bore diameter	Bore diameter（d1・d2）	Keyway width（W1･W2）	Keyway height（T1･T2）	Set screw hole（M）
Nominal bore diameter	ToleranceH7，H8	ToleranceP9	^{+ 0.30}₀	－	Nominal bore diameter	－	ToleranceG7，F7	ToleranceH9	－
8P	8 +0.022	3^－0.006_－0.031	9.4^+0.3₀	2-M4	-	-	-	-	-
9P	9 +0.022	3^－0.006_－0.031	10.4^+0.3₀	2-M4	-	-	-	-	-
10P	10 +0.022	3^－0.006_－0.031	11.4^+0.3₀	2-M4	-	-	-	-	-
11P	11+0.018	4^－0.042_－0.012	12.8^+0.3₀	2-M4	-	-	-	-	-
12P	12 +0.018	4^－0.042_－0.012	13.8^+0.3₀	2-M4	-	-	-	-	-
14P	14+0.018	5^－0.042_－0.012	16.3^+0.3₀	2-M4	14N	14^+0.024_+0.006	5+0.030	16.3^+0.3₀	2-M4
15P	15+0.018	5^－0.042_－0.012	17.3^+0.3₀	2-M4	-	-	-	-	-
16P	16+0.018	5^－0.042_－0.012	18.3^+0.3₀	2-M4	-	-	-	-	-
17P	17+0.018	5^－0.042_－0.012	19.3^+0.3₀	2-M4	-	-	-	-	-
18P	18+0.018	6^－0.042_－0.012	20.8^+0.3₀	2-M5	-	-	-	-	-
19P	19 +0.021	6^－0.042_－0.012	21.8^+0.3₀	2-M5	19N	19^+0.028_+0.007	6+0.030	21.8^+0.3₀	2-M5
20P	20 +0.021	6^－0.042_－0.012	22.8^+0.3₀	2-M5	-	-	-	-	-
22P	22 +0.021	6^－0.042_－0.012	24.8^+0.3₀	2-M5	-	-	-	-	-
24P	24 +0.021	8^－0.051_－0.015	27.3^+0.3₀	2-M6	24N	24^+0.028_+0.007	8+0.036	27.3^+0.3₀	2-M6
25P	25 +0.021	8^－0.051_－0.015	28.3^+0.3₀	2-M6	-	-	-	-	-
28P	28 +0.021	8^－0.051_－0.015	31.3^+0.3₀	2-M6	28N	28^+0.028_+0.007	8+0.036	31.3^+0.3₀	2-M6
30P	30 +0.021	8^－0.051_－0.015	33.3^+0.3₀	2-M6	-	-	-	-	-
32P	32 +0.025	10^－0.051_－0.015	35.3^+0.3₀	2-M8	-	-		-
35P	35 +0.025	10^－0.051_－0.015	38.3^+0.3₀	2-M8	-	-	-	-
38P	38 +0.025	10^－0.051_－0.015	41.3^+0.3₀	2-M8	38N	38^+0.050_+0.025	10+0.036	41.3^+0.3₀	2-M8
40P	40 +0.025	12^－0.061_－0.018	43.3^+0.3₀	2-M8	-	-	-	-	-
42P	42 +0.025	12^－0.061_－0.018	45.3^+0.3₀	2-M8	42N	42^+0.050_+0.025	12+0.043	45.3^+0.3₀	2-M8
45P	45 +0.025	14^－0.061_－0.018	48.8^+0.3₀	2-M10	-	-	-	-	-
48P	48 +0.025	14^－0.061_－0.018	51.8^+0.3₀	2-M10	48N	48^+0.050_+0.025	14+0.043	51.8^+0.3₀	2-M10
50P	50 +0.025	14^－0.061_－0.018	53.8^+0.3₀	2-M10	-	-	-	-	-
55P	55 +0.030	16^－0.061_－0.018	59.3^+0.3₀	2-M10	55N	55^+0.060_+0.030	16+0.043	59.3^+0.3₀	2-M10
56P	56 +0.030	16^－0.061_－0.018	60.3^+0.3₀	2-M10	-	-	-	-	-
60P	60 +0.030	18^－0.061_－0.018	64.4^+0.3₀	2-M10	60N	60^+0.060_+0.030	18+0.043	64.4^+0.3₀	2-M10