SFC Models

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Features of SFC Models

These are disc-spring couplings that use a lightweight, high-strength aluminum alloy for the clamp hub to enable high torsional stiffness and high response. Both single-element types with high torsional stiffness and flexible double-element types that separate double elements with a spacer are available. Both lower the moment of inertia by linking the outer diameter of the hub to the shaft diameter.

Ultra-low inertia

The outer diameter shape of the clamp hub is linked to the bore diameter you are using. This decreases inertia to the lowest amount necessary by reducing the outer diameter when the bore diameter is small, making these optimal for fast-accelerating operation. Three shapes are available to match the combination of bore diameters you are using.

Simple, reliable, no backlash

Since the clamp method is used to couple to the shaft, mounting can be completed by tightening one bolt each on left and right. Clamp hubs enable reliable connections that are strong against vibration and shocks, and all power is transmitted by frictional couplings, so there is no backlash. The clamp hubs on both sides of the coupling are centered using a dedicated tool, ensuring concentricity.

For tapered shafts

Allows coupling via a clamp hub when an optional taper adapter is mounted on the tapered shaft of a servo motor.

Custom-ordered specific lengths （SFC DA2 types）

This type allows you to specify a specific length that matches the distance between shafts that you require.

Clean room compatible

It is a clean room compatible product that has been cleaned, assembled (ISO class 6) and packed in consideration of its use in clean rooms.

SFC-□SA2 Types

[Specifications]

Model	Type	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	Type	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]
SFC-002SA2	C	0.25	0.01	0.5	±0.04	10000	190	34	0.06×10^-6	0.003
SFC-005SA2	C	0.6	0.02	0.5	±0.05	10000	500	140	0.26×10^-6	0.007
SFC-010SA2	C	1	0.02	1	±0.1	10000	1400	140	0.58×10^-6	0.011
SFC-020SA2	C	2	0.02	1	±0.15	10000	3700	64	2.39×10^-6	0.025
SFC-025SA2	C	4	0.02	1	±0.19	10000	5600	60	3.67×10^-6	0.029
SFC-030SA2	A	5	0.02	1	±0.2	10000	8000	64	4.07×10^-6	0.034
	B								6.09×10^-6	0.041
	C								8.20×10^-6	0.049
SFC-035SA2	C	10	0.02	1	±0.25	10000	18000	112	18.44×10^-6	0.082
SFC-040SA2	A	12	0.02	1	±0.3	10000	20000	80	16.71×10^-6	0.077
	B								22.55×10^-6	0.085
	C								29.25×10^-6	0.100
SFC-050SA2	A	25	0.02	1	±0.4	10000	32000	48	55.71×10^-6	0.159
	B								76.26×10^-6	0.177
	C								99.03×10^-6	0.206
SFC-055SA2	C	40	0.02	1	±0.42	10000	50000	43	188.0×10^-6	0.314
SFC-060SA2	A	60	0.02	1	±0.45	10000	70000	76.4	145.9×10^-6	0.283
	B								205.0×10^-6	0.326
	C								268.6×10^-6	0.385
SFC-080SA2	C	100	0.02	1	±0.55	10000	140000	128	710.6×10^-6	0.708
SFC-090SA2	C	180	0.02	1	±0.65	10000	100000	108	1236×10^-6	0.946
SFC-100SA2	C	250	0.02	1	±0.74	10000	120000	111	1891×10^-6	1.202

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* Check the Standard Bore Diameter list as rated torque may be restricted by the holding power of the shaft connection component.

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

* Torsional stiffness values given are measured values for the element alone.

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

[Dimensions]

Unit [mm]

Model	Type	d1[mm]		d2[mm]		D[mm]	DB[mm]	N[mm]	Ｌ[mm]	LF[mm]	S[mm]	A1[mm]	A2[mm]	C[mm]	K[mm]	M Qty - Nominal dia	Tightening torque[N･m]
Model	Type	Min.	Max.	Min.	Max.	D[mm]	DB[mm]	N[mm]	Ｌ[mm]	LF[mm]	S[mm]	A1[mm]	A2[mm]	C[mm]	K[mm]	M Qty - Nominal dia	Tightening torque[N･m]
SFC-002SA2	Ｃ	3	5	3	5	12	12.4	─	12.35	5.9	0.55	─	3.7	1.9	5.6	1-M1.6	0.23 to 0.28
SFC-005SA2	C	3	6	3	6	16	─	─	16.7	7.85	1	─	4.8	2.5	6.5	1-M2	0.4 to 0.5
SFC-010SA2	C	3	8	3	8	19	─	─	19.35	9.15	1.05	─	5.8(6)	3.15	8.5	1-M2.5(M2)	1.0 to 1.1(0.4 to 0.5)
SFC-020SA2	C	4	10	4	11	26	─	─	23.15	10.75	1.65	─	9.5	3.3	10.6	1-M2.5	1.0 to 1.1
SFC-025SA2	C	5	14	5	14	29	─	─	23.4	10.75	1.9	─	11	3.3	14.5	1-M2.5	1.0 to 1.1
SFC-030SA2	A	5	10	5	10	34	─	21.6	27.3	12.4	2.5	8	─	3.75	14.5	1-M3	1.5 to 1.9
	B	5	10	Over 10	16			21.6				8	12.5
	C	Over 10	14	Over 10	16			─				─	12.5
SFC-035SA2	C	6	16	6	19	39	─	─	34	15.5	3	─	14	4.5	17	1-M4	3.4 to 4.1
SFC-040SA2	A	8	15	8	15	44	─	29.6	34	15.5	3	11	─	4.5	19.5	1-M4	3.4 to 4.1
	B	8	15	Over 15	24			29.6				11	17
	C	Over 15	19	Over 15	24			─				─	17
SFC-050SA2	A	8	19	8	19	56	─	38	43.4	20.5	2.4	14.5	─	6	26	1-M5	7.0 to 8.5
	B	8	19	Over 19	30			38				14.5	22
	C	Over 19	25	Over 19	30			─				─	22
SFC-055SA2	C	10	30	10	30	63	─	─	50.6	24	2.6	─	23	7.75	31	1-M6	14 to 15
SFC-060SA2	A	11	24	11	24	68	─	46	53.6	25.2	3.2	17.5	─	7.75	31	1-M6	14 to 15
	B	11	24	Over 24	35			46				17.5	26.5
	C	Over 24	30	Over 24	35			─				─	26.5
SFC-080SA2	C	18	35	18	40	82	─	─	68	30	8	─	28	9	38	1-M8	27 to 30
SFC-090SA2	C	25	40	25	45	94	─	─	68.3	30	8.3	─	34	9	42	1-M8	27 to 30
SFC-100SA2	C	32	45	32	45	104	─	─	69.8	30	9.8	─	39	9	48	1-M8	27 to 30

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* The øDB value is measured assuming that the head of the clamping bolt is larger than the external diameter of the hub.

* The K dimension is the inner diameter of the element. For d2 dimension exceeding this value, shaft can be inserted only up to LF dimension to the d2 side hub.

* The nominal diameter for the clamping bolt M is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.

* The figures in parentheses ( ) for the SFC-010 are the values when d1 or d2 is ø8 mm.

[Standard bore diameter]

Standard (option) bore diameter, d1/d2 [mm] and restricted rated torque [N∙m]
Nominal bore diameter		3	4	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45
Shaft tolerance h7 (h6･g6)	B	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
Shaft tolerance j6 (Option)	J																			○		○	○		○
Shaft tolerance k6 (Option)	K							○	○						○		○			○		○	○				○		○
SFC-002SA2	d1	●	●	●
SFC-002SA2	d2	●	●	●
SFC-005SA2	d1	●	●	●	●
SFC-005SA2	d2	●	●	●	●
SFC-010SA2	d1	●	●	●	●	●	●	●
SFC-010SA2	d2	●	●	●	●	●	●	●
SFC-020SA2	d1		●	●	●	●	●	●	●	●	●
SFC-020SA2	d2		●	●	●	●	●	●	●	●	●	●
SFC-025SA2	d1			2.1	●	●	●	●	●	●	●	●	●	●	●
SFC-025SA2	d2			2.1	●	●	●	●	●	●	●	●	●	●	●
SFC-030SA2	d1			2.8	3.4	●	●	●	●	●	●	●	●	●	●
SFC-030SA2	d2			2.8	3.4	●	●	●	●	●	●	●	●	●	●	●	●
SFC-035SA2	d1				5	5	6.6	●	●	●	●	●	●	●	●	●	●
SFC-035SA2	d2				5	5	6.6	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040SA2	d1							9	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040SA2	d2							9	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d1							18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d2							18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d1										31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d2										31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d1											50	51	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d2											50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-080SA2	d1																		●	●	●	●	●	●	●	●	●	●
SFC-080SA2	d2																		●	●	●	●	●	●	●	●	●	●	●	●
SFC-090SA2	d1																							●	●	●	●	●	●	●
SFC-090SA2	d2																							●	●	●	●	●	●	●	●	●
SFC-100SA2	d1																										226	●	●	●	●	●
SFC-100SA2	d2																										226	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is － 0.025 to ＋0.010.

* Shaft tolerances j6/k6: designations J/K are optional, and are only supported for bore diameters marked with ○ .

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

* Bore diameters whose fields contain numbers are restricted in their rated torque by the holding power of the shaft connection component because the bore diameter is small. The numbers indicate the rated torque [N•m].

SFC-□DA2 Types

[Specifications]

Model	Type	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	Type	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]
SFC-002DA2	C	0.25	0.03	0.5(On one side)	±0.08	10000	95	17	0.07×10^-6	0.004
SFC-005DA2	C	0.6	0.05	0.5(On one side)	±0.1	10000	250	70	0.37×10^-6	0.010
SFC-010DA2	C	1	0.11	1(On one side)	±0.2	10000	700	70	0.80×10^-6	0.015
SFC-020DA2	C	2	0.15	1(On one side)	±0.33	10000	1850	32	3.43×10^-6	0.035
SFC-025DA2	C	4	0.16	1(On one side)	±0.38	10000	2800	30	5.26×10^-6	0.040
SFC-030DA2	A	5	0.18	1(On one side)	±0.4	10000	4000	32	7.43×10^-6	0.054
	B								9.45×10^-6	0.060
	C								11.56×10^-6	0.068
SFC-035DA2	C	10	0.24	1(On one side)	±0.5	10000	9000	56	26.93×10^-6	0.121
SFC-040DA2	A	12	0.24	1(On one side)	±0.6	10000	10000	40	29.98×10^-6	0.124
	B								35.82×10^-6	0.131
	C								42.52×10^-6	0.146
SFC-050DA2	A	25	0.28	1(On one side)	±0.8	10000	16000	24	98.34×10^-6	0.250
	B								118.9×10^-6	0.268
	C								141.7×10^-6	0.298
SFC-055DA2	C	40	0.31	1(On one side)	±0.84	10000	25000	21.5	261.3×10^-6	0.459
SFC-060DA2	A	60	0.34	1(On one side)	±0.9	10000	35000	38.2	256.6×10^-6	0.447
	B								315.7×10^-6	0.489
	C								379.3×10^-6	0.549
SFC-080DA2	C	100	0.52	1(On one side)	±1.10	10000	70000	64	1039×10^-6	1.037
SFC-090DA2	C	180	0.52	1(On one side)	±1.30	10000	50000	54	1798×10^-6	1.369
SFC-100DA2	C	250	0.55	1(On one side)	±1.48	10000	60000	55.5	2754×10^-6	1.739

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" as rated torque may be restricted by the holding power of the shaft connection component.

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

* Torsional stiffness values given are measured values for the element alone

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

[Dimensions]

Unit [mm]

Model	Type	d1[mm]		d2[mm]		D[mm]	DB[mm]	N[mm]	Ｌ[mm]	LF[mm]	LP[mm]	S[mm]	A1[mm]	A2[mm]	C[mm]	d3[mm]	K[mm]	M Qty - Nominal dia	Tightening torque[N･m]
Model	Type	Min.	Max.	Min.	Max.	D[mm]	DB[mm]	N[mm]	Ｌ[mm]	LF[mm]	LP[mm]	S[mm]	A1[mm]	A2[mm]	C[mm]	d3[mm]	K[mm]	M Qty - Nominal dia	Tightening torque[N･m]
SFC-002DA2	C	3	5	3	5	12	12.4	─	15.7	5.9	2.8	0.55	─	3.7	1.9	5.2	5.6	1-M1.6	0.23 to 0.28
SFC-005DA2	C	3	6	3	6	16	─	─	23.2	7.85	5.5	1	─	4.8	2.5	6.5	6.5	1-M2	0.4 to 0.5
SFC-010DA2	C	3	8	3	8	19	─	─	25.9	9.15	5.5	1.05	─	5.8(6)	3.15	8.5	8.5	1-M2.5(M2)	1.0 to 1.1(0.4 to 0.5)
SFC-020DA2	C	4	10	4	11	26	─	─	32.3	10.75	7.5	1.65	─	9.5	3.3	10.6	10.6	1-M2.5	1.0 to 1.1
SFC-025DA2	C	5	14	5	14	29	─	─	32.8	10.75	7.5	1.9	─	11	3.3	15	14.5	1-M2.5	1.0 to 1.1
SFC-030DA2	A	5	10	5	10	34	─	21.6	37.8	12.4	8	2.5	8	─	3.75	15	14.5	1-M3	1.5 to 1.9
	B	5	10	Over 10	16			21.6					8	12.5
	C	Over 10	14	Over 10	16			─					─	12.5
SFC-035DA2	C	6	16	6	19	39	─	─	48	15.5	11	3	─	14	4.5	17	17	1-M4	3.4 to 4.1
SFC-040DA2	A	8	15	8	15	44	─	29.6	48	15.5	11	3	11	─	4.5	20	19.5	1-M4	3.4 to 4.1
	B	8	15	Over 15	24			29.6					11	17
	C	Over 15	19	Over 15	24			─					─	17
SFC-050DA2	A	8	19	8	19	56	─	38	59.8	20.5	14	2.4	14.5	─	6	26	26	1-M5	7.0 to 8.5
	B	8	19	Over 19	30			38					14.5	22
	C	Over 19	25	Over 19	30			─					─	22
SFC-055DA2	C	10	30	10	30	63	─	─	68.7	24	15.5	2.6	─	23	7.75	31	31	1-M6	14 to 15
SFC-060DA2	A	11	24	11	24	68	─	46	73.3	25.2	16.5	3.2	17.5	─	7.75	31	31	1-M6	14 to 15
	B	11	24	Over 24	35			46					17.5	26.5
	C	Over 24	30	Over 24	35			─					─	26.5
SFC-080DA2	C	18	35	18	40	82	─	─	98	30	22	8	─	28	9	40	38	1-M8	27 to 30
SFC-090DA2	C	25	40	25	45	94	─	─	98.6	30	22	8.3	─	34	9	47	42	1-M8	27 to 30
SFC-100DA2	C	32	45	32	45	104	─	─	101.6	30	22	9.8	─	39	9	50	48	1-M8	27 to 30

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* The øDB value is measured assuming that the head of the clamping bolt is larger than the external diameter of the hub.

* The K dimension is the inner diameter of the element. For d2 dimension exceeding this value, shaft can be inserted only up to LF dimension to the d2 side hub.

* The nominal diameter for the clamping bolt M is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.

* The figures in parentheses ( ) for the SFC-010 are the values when d1 or d2 is ø8 mm.

[Standard bore diameter]

Standard (option) bore diameter, d1/d2 [mm] and restricted rated torque [N∙m]
Nominal bore diameter		3	4	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45
Shaft tolerance h7 (h6･g6)	B	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
Shaft tolerance j6 (Option)	J																			○		○	○		○
Shaft tolerance k6 (Option)	K							○	○						○		○			○		○	○				○		○
SFC-002DA2	d1	●	●	●
SFC-002DA2	d2	●	●	●
SFC-005DA2	d1	●	●	●	●
SFC-005DA2	d2	●	●	●	●
SFC-010DA2	d1	●	●	●	●	●	●	●
SFC-010DA2	d2	●	●	●	●	●	●	●
SFC-020DA2	d1		●	●	●	●	●	●	●	●	●
SFC-020DA2	d2		●	●	●	●	●	●	●	●	●	●
SFC-025DA2	d1			2.1	●	●	●	●	●	●	●	●	●	●	●
SFC-025DA2	d2			2.1	●	●	●	●	●	●	●	●	●	●	●
SFC-030DA2	d1			2.8	3.4	●	●	●	●	●	●	●	●	●	●
SFC-030DA2	d2			2.8	3.4	●	●	●	●	●	●	●	●	●	●	●	●
SFC-035DA2	d1				5	5	6.6	●	●	●	●	●	●	●	●	●	●
SFC-035DA2	d2				5	5	6.6	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040DA2	d1							9	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040DA2	d2							9	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2	d1							18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2	d2							18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2	d1										31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2	d2										31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2	d1											50	51	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2	d2											50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-080DA2	d1																		●	●	●	●	●	●	●	●	●	●
SFC-080DA2	d2																		●	●	●	●	●	●	●	●	●	●	●	●
SFC-090DA2	d1																							●	●	●	●	●	●	●
SFC-090DA2	d2																							●	●	●	●	●	●	●	●	●
SFC-100DA2	d1																										226	●	●	●	●	●
SFC-100DA2	d2																										226	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is － 0.025 to ＋0.010.

* Shaft tolerances j6/k6: designations J/K are optional, and are only supported for bore diameters marked with ○ .

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

Options of SFC Models

Tapered shaft supportedAllows coupling clamping hub when a taper adapter is mounted on the tapered shaft of a servo motor.

SFC-□SA2(BC)

[Specifications]

Model	shape TYPE	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	shape TYPE	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]
SFC-040SA2-□B-11BC	B	12	0.02	1	±0.3	10000	20000	80	26.58×10^-6	0.131
SFC-040SA2-□B-11BC	C	12	0.02	1	±0.3	10000	20000	80	33.28×10^-6	0.146
SFC-050SA2-□B-11BC	B	25	0.02	1	±0.4	10000	32000	48	82.91×10^-6	0.240
SFC-050SA2-□B-11BC	C	25	0.02	1	±0.4	10000	32000	48	103.5×10^-6	0.258
SFC-050SA2-□B-14BC	B	25	0.02	1	±0.4	10000	32000	48	88.72×10^-6	0.271
SFC-050SA2-□B-14BC	C	25	0.02	1	±0.4	10000	32000	48	111.5×10^-6	0.301
SFC-050SA2-□B-16BC	B	25	0.02	1	±0.4	10000	32000	48	95.44×10^-6	0.309
SFC-050SA2-□B-16BC	C	25	0.02	1	±0.4	10000	32000	48	118.2×10^-6	0.338
SFC-055SA2-□B-14BC	C	40	0.02	1	±0.42	10000	50000	43	201.1×10^-6	0.409
SFC-055SA2-□B-16BC	C	40	0.02	1	±0.42	10000	50000	43	207.8×10^-6	0.446
SFC-060SA2-□B-16BC	B	60	0.02	1	±0.45	10000	70000	76.4	228.7×10^-6	0.475
SFC-060SA2-□B-16BC	C	60	0.02	1	±0.45	10000	70000	76.4	287.8×10^-6	0.517

* Types B / C are automatically specified by Miki Pulley according to the bore diameter you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" as rated torque may be restricted by the holding power of the shaft connection component.

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

* Torsional stiffness values given are measured values for the element alone.

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

[Dimensions]

Unit [mm]

Model	d2	W	T	WA	LA	dA	DA	LL	D	L	LF	C	A1	A2	M Qty - Nominal dia.
SFC-040SA2-□B-11BC	11	4	12.2	18	16	17	22	44	44	34	15.5	4.5	11	17	1-M4
SFC-050SA2-□B-11BC	11	4	12.2	18	16	17	22	48.4	56	43.4	20.5	6	14.5	22	1-M5
SFC-050SA2-□B-14BC	14	4	15.1	24	19	22	28	53.4	56	43.4	20.5	6	14.5	22	1-M5
SFC-050SA2-□B-16BC	16	5	17.3	24	29	26	30	63.4	56	43.4	20.5	6	14.5	22	1-M5
SFC-055SA2-□B-14BC	14	4	15.1	24	19	22	28	56.6	63	50.6	24	7.75	-	23	1-M6
SFC-055SA2-□B-16BC	16	5	17.3	24	29	26	30	66.6	63	50.6	24	7.75	-	23	1-M6
SFC-060SA2-□B-16BC	16	5	17.3	24	29	26	30	69.6	68	53.6	25.2	7.75	17.5	26.5	1-M6

* For other dimensions, see dimensions for single element type SFC-□SA2.

[Standard bore diameter]

Standard (option) bore diameter, d1 [mm] and restricted rated torque [N・m]
Nominal bore diameter		8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35
Shaft tolerance h7(h6,g6)	B	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
Shaft tolerance j6(option)	J													○		○	○		○
Shaft tolerance k6(option)	K	○	○						○		○			○		○	○				○
SFC-040SA2-□B-11BC		9	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2-□B-11BC		18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2-□B-14BC		18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2-□B-16BC		18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2-□B-14BC					31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2-□B-16BC					31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2-□B-16BC						50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Shaft tolerances j6/k6: designations J/K are optional, and are only supported for bore diameters marked with ○ .

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

SFC-□DA2(BC)

[Specifications]

Model	shape TYPE	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	shape TYPE	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]
SFC-040DA2-□B-11BC	B	12	0.24	1(On one side)	±0.6	10000	10000	40	39.42×10^-6	0.180
SFC-040DA2-□B-11BC	C	12	0.24	1(On one side)	±0.6	10000	10000	40	46.12×10^-6	0.195
SFC-050DA2-□B-11BC	B	25	0.28	1(On one side)	±0.8	10000	16000	24	125.5×10^-6	0.331
SFC-050DA2-□B-11BC	C	25	0.28	1(On one side)	±0.8	10000	16000	24	146.1×10^-6	0.349
SFC-050DA2-□B-14BC	B	25	0.28	1(On one side)	±0.8	10000	16000	24	131.1×10^-6	0.362
SFC-050DA2-□B-14BC	C	25	0.28	1(On one side)	±0.8	10000	16000	24	154.1×10^-6	0.392
SFC-050DA2-□B-16BC	B	25	0.28	1(On one side)	±0.8	10000	16000	24	138.1×10^-6	0.400
SFC-050DA2-□B-16BC	C	25	0.28	1(On one side)	±0.8	10000	16000	24	160.8×10^-6	0.430
SFC-055DA2-□B-14BC	C	40	0.31	1(On one side)	±0.84	10000	25000	21.5	274.0×10^-6	0.530
SFC-055DA2-□B-16BC	C	40	0.31	1(On one side)	±0.84	10000	25000	21.5	280.5×10^-6	0.567
SFC-060DA2-□B-16BC	B	60	0.34	1(On one side)	±0.9	10000	35000	38.2	339.4×10^-6	0.638
SFC-060DA2-□B-16BC	C	60	0.34	1(On one side)	±0.9	10000	35000	38.2	398.5×10^-6	0.681

* Types B / C are automatically specified by Miki Pulley according to the bore diameter you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" as rated torque may be restricted by the holding power of the shaft connection component.

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

* Torsional stiffness values given are measured values for the element alone.

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

[Dimensions]

Unit [mm]

Model	d2	W	T	WA	LA	dA	DA	LL	D	L	LF	C	A1	A2	M Quantity - Nominal dia.
SFC-040DA2-□B-11BC	11	4	12.2	18	16	17	22	58	44	48	15.5	4.5	11	17	1-M4
SFC-050DA2-□B-11BC	11	4	12.2	18	16	17	22	64.8	56	59.8	20.5	6	14.5	22	1-M5
SFC-050DA2-□B-14BC	14	4	15.1	24	19	22	28	69.8	56	59.8	20.5	6	14.5	22	1-M5
SFC-050DA2-□B-16BC	16	5	17.3	24	29	26	30	79.8	56	59.8	20.5	6	14.5	22	1-M5
SFC-055DA2-□B-14BC	14	4	15.1	24	19	22	28	74.4	63	68.7	24	7.75	―	23	1-M6
SFC-055DA2-□B-16BC	16	5	17.3	24	29	26	30	84.7	63	68.7	24	7.75	―	23	1-M6
SFC-060DA2-□B-16BC	16	5	17.3	24	29	26	30	89.3	68	73.3	25.2	7.75	17.5	26.5	1-M6

* For other dimensions, see dimensions for double element type SFC-□DA2.

[Standard bore diameter]

Standard (option) bore diameter, d1 [mm] and restricted rated torque [N・m]
Nominal bore diameter		8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35
Shaft tolerance h7(h6,g6)	B	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
Shaft tolerance j6(option)	J													○		○	○		○
Shaft tolerance k6(option)	K	○	○						○		○			○		○	○				○
SFC-040DA2-□B-11BC		9	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2-□B-11BC		18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2-□B-14BC		18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2-□B-16BC		18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2-□B-14BC					31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2-□B-16BC					31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2-□B-16BC						50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Shaft tolerances j6/k6: designations J/K are optional, and are only supported for bore diameters marked with ○ .

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

For length-specified special order partsSFC-□DA2 type spacer length can be changed to attain the necessary distance between shafts. Specify the length in 1 mm units.

SFC-□DA2(L)

[Specifications]

Model	shape TYPE	Rated torque [N・m]	Misalignment				Max. rotation speed [min^-1]	Moment of inertia [kg・m²]		Mass [kg]
			Parallel[mm]		Angular [°]	Axial [mm]		Moment of inertia [kg・m²]		Mass [kg]
			LMin.	LMax.	Angular [°]	Axial [mm]		LMin.	LMax.	LMin.	LMax.
SFC-005DA2	C	0.6	0.03	0.20	0.5(On one side)	±0.1	10000	0.33×10^-6	0.62×10^-6	0.009	0.017
SFC-010DA2	C	1	0.08	0.44	1(On one side)	±0.2	10000	0.72×10^-6	1.38×10^-6	0.014	0.026
SFC-020DA2	C	2	0.10	0.46	1(On one side)	±0.33	10000	3.02×10^-6	5.30×10^-6	0.031	0.054
SFC-025DA2	C	4	0.09	0.46	1(On one side)	±0.38	10000	4.55×10^-6	7.95×10^-6	0.036	0.061
SFC-030DA2	A	5	0.11	0.48	1(On one side)	±0.4	10000	6.09×10^-6	12.80×10^-6	0.046	0.085
	B							8.11×10^-6	14.82×10^-6	0.053	0.091
	C							10.22×10^-6	16.93×10^-6	0.061	0.099
SFC-035DA2	C	10	0.15	0.54	1(On one side)	±0.5	10000	23.85×10^-6	35.97×10^-6	0.108	0.161
SFC-040DA2	A	12	0.15	0.54	1(On one side)	±0.6	10000	25.06×10^-6	44.76×10^-6	0.107	0.174
	B							30.89×10^-6	50.62×10^-6	0.116	0.182
	C							37.58×10^-6	57.31×10^-6	0.130	0.197
SFC-050DA2	A	25	0.16	0.63	1(On one side)	±0.8	10000	77.42×10^-6	144.3×10^-6	0.205	0.347
	B							97.97×10^-6	164.8×10^-6	0.225	0.365
	C							120.8×10^-6	187.6×10^-6	0.252	0.394
SFC-055DA2	C	40	0.16	0.60	1(On one side)	±0.84	10000	226.8×10^-6	325.0×10^-6	0.378	0.538
SFC-060DA2	A	60	0.19	0.63	1(On one side)	±0.9	10000	210.8×10^-6	340.1×10^-6	0.382	0.567
	B							269.9×10^-6	399.2×10^-6	0.424	0.609
	C							333.5×10^-6	462.8×10^-6	0.484	0.669

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" for SFC-□DA2 as there may be limitations on the rated torque caused by the holding power of the coupling shaft section.

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

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

* See "Specifications" for SFC-□DA2 for stiffness values.

[Dimensions]

Unit [mm]

Model	shape TYPE	d1		d2		D	N	L			LF	S	A1	A2	C	d3	K	M	Tightening torque [N・m]
Model	shape TYPE	Min.	Max.	Min.	Max.	D	N	Std.	Min.	Max.	LF	S	A1	A2	C	d3	K	M	Tightening torque [N・m]
SFC-005DA2	C	3	6	3	6	16	-	23.2	21	40	7.85	1	-	4.8	2.5	6.5	6.5	1-M2	0.4 to 0.5
SFC-010DA2	C	3	8	3	8	19	-	25.9	24	45	9.15	1.05	-	5.8(6)	3.15	8.5	8.5	1-M2.5(M2)	1.0 to 1.1(0.4 to 0.5)
SFC-020DA2	C	4	10	4	11	26	-	32.3	29	50	10.75	1.65	-	9.5	3.3	10.6	10.6	1-M2.5	1.0 to 1.1
SFC-025DA2	C	5	14	5	14	29	-	32.8	29	50	10.75	1.9	-	11	3.3	15	14.5	1-M2.5	1.0 to 1.1
SFC-030DA2	A	5	10	5	10	34	21.6	37.8	34	55	12.4	2.5	8	-	3.75	15	14.5	1-M3	1.5 to 1.9
	B	5	10	Over 10	16		21.6						8	12.5
	C	Over 10	14	Over 10	16		-						-	12.5
SFC-035DA2	C	6	16	6	19	39	-	48	43	65	15.5	3	-	14	4.5	17	17	1-M4	3.4 to 4.1
SFC-040DA2	A	8	15	8	15	44	29.6	48	43	65	15.5	3	11	-	4.5	20	19.5	1-M4	3.4 to 4.1
	B	8	15	Over 15	24		29.6						11	17
	C	Over 15	19	Over 15	24		-						-	17
SFC-050DA2	A	8	19	8	19	56	38	59.8	53	80	20.5	2.4	14.5	-	6	26	26	1-M5	7.0 to 8.5
	B	8	19	Over 19	30		38						14.5	22
	C	Over 19	25	Over 19	30		-						-	22
SFC-055DA2	C	10	30	10	30	63	-	68.7	60	85	24	2.6	-	23	7.75	31	31	1-M6	14 to 15
SFC-060DA2	A	11	24	11	24	68	46	73.3	65	90	25.2	3.2	17.5	-	7.75	31	31	1-M6	14 to 15
	B	11	24	Over 24	35		46						17.5	26.5
	C	Over 24	30	Over 24	35		-						-	26.5

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* The nominal diameter for the clamping bolt M is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.

* The figures in parentheses ( ) for the SFC-010 are the values when d1 or d2 is ø8 mm.

* Compatible lengths L range from the minimum L dimension to the maximum L dimension shown in the above table. Specify in 1 mm units.

* When the L dimension is shorter than the standard, the left/right clamping bolt phases will be off by 45°.

* Check "Standard Bore Diameters" for SFC-□DA2 for the standard bore diameters.

For keyway milling applicationsIf you are using a keyed shaft, we can mill a keyway in the clamping hub to your specifications.

SFC-□SA2/DA2

[Dimensions]

Unit [mm]

H9 keyway width standards														JS9 keyway width standards
Nominal bore dia.				bore dia. d1/d2 [mm]	Keyway width W1/W2 [mm]	Keyway height T1/T2 [mm]	Nominal bore dia.				bore dia. d1/d2 [mm]	Keyway width W1/W2 [mm]	Keyway height T1/T2 [mm]	Nominal bore dia.				bore dia. d1/d2 [mm]	Keyway width W1/W2 [mm]	Keyway height T1/T2 [mm]	Nominal bore dia.				bore dia. d1/d2 [mm]	Keyway width W1/W2 [mm]	Keyway height T1/T2 [mm]
bore dia.	Shaft tolerance						bore dia.	Shaft tolerance						bore dia.	Shaft tolerance						bore dia.	Shaft tolerance
bore dia.	h7	j6	k6				bore dia.	h7	j6	k6				bore dia.	h7	j6	k6				bore dia.	h7	j6	k6
8	BH	-	KH	8	3^+0.025₀	9.4^+0.3₀	20	BH	-	-	20	6^+0.030₀	22.8^+0.3₀	8	BJ	-	KJ	8	3±0.0125	9.4^+0.3₀	20	BJ	-	-	20	6±0.0150	22.8^+0.3₀
9	BH	-	KH	9	3^+0.025₀	10.4^+0.3₀	22	BH	JH	KH	22	6^+0.030₀	24.8^+0.3₀	9	BJ	-	KJ	9	3±0.0125	10.4^+0.3₀	22	BJ	JJ	KJ	22	6±0.0150	24.8^+0.3₀
10	BH	-	-	10	3^+0.025₀	11.4^+0.3₀	24	BH	JH	KH	24	8^+0.036₀	27.3^+0.3₀	10	BJ	-	-	10	3±0.0125	11.4^+0.3₀	24	BJ	JJ	KJ	24	8±0.0180	27.3^+0.3₀
11	BH	-	-	11	4^+0.030₀	12.8^+0.3₀	25	BH	-	-	25	8^+0.036₀	28.3^+0.3₀	11	BJ	-	-	11	4±0.0150	12.8^+0.3₀	25	BJ	-	-	25	8±0.0180	28.3^+0.3₀
12	BH	-	-	12	4^+0.030₀	13.8^+0.3₀	28	BH	JH	-	28	8^+0.036₀	31.3^+0.3₀	12	BJ	-	-	12	4±0.0150	13.8^+0.3₀	28	BJ	JJ	-	28	8±0.0180	31.3^+0.3₀
13	BH	-	-	13	5^+0.030₀	15.3^+0.3₀	30	BH	-	-	30	8^+0.036₀	33.3^+0.3₀	13	BJ	-	-	13	5±0.0150	15.3^+0.3₀	30	BJ	-	-	30	8±0.0180	33.3^+0.3₀
14	BH	-	KH	14	5^+0.030₀	16.3^+0.3₀	32	BH	-	KH	32	10^+0.036₀	35.3^+0.3₀	14	BJ	-	KJ	14	5±0.0150	16.3^+0.3₀	32	BJ	-	KJ	32	10±0.0180	35.3^+0.3₀
15	BH	-	-	15	5^+0.030₀	17.3^+0.3₀	35	BH	-	-	35	10^+0.036₀	38.3^+0.3₀	15	BJ	-	-	15	5±0.0150	17.3^+0.3₀	35	BJ	-	-	35	10±0.0180	38.3^+0.3₀
16	BH	-	KH	16	5^+0.030₀	18.3^+0.3₀	38	BH	-	KH	38	10^+0.036₀	41.3^+0.3₀	16	BJ	-	KJ	16	5±0.0150	18.3^+0.3₀	38	BJ	-	KJ	38	10±0.0180	41.3^+0.3₀
17	BH	-	-	17	5^+0.030₀	19.3^+0.3₀	40	BH	-	-	40	12^+0.430₀	43.3^+0.3₀	17	BJ	-	-	17	5±0.0150	19.3^+0.3₀	40	BJ	-	-	40	12±0.0215	43.3^+0.3₀
18	BH	-	-	18	6^+0.030₀	20.8^+0.3₀	42	BH	-	-	42	12^+0.430₀	45.3^+0.3₀	18	BJ	-	-	18	6±0.0150	20.8^+0.3₀	42	BJ	-	-	42	12±0.0215	45.3^+0.3₀
19	BH	JH	KH	19	6^+0.030₀	21.8^+0.3₀	45	BH	-	-	45	14^+0.430₀	48.8^+0.3₀	19	BJ	JJ	KJ	19	6±0.0150	21.8^+0.3₀	45	BJ	-	-	45	14±0.0215	48.8^+0.3₀

* Bore diameter of φ35 (nominal diameter B), the shaft tolerance is -0.025 to +0.010 .

* We can also handle standards not listed above. Consult MIKI PULLEY.

[Standard bore diameters]

Standard (option) bore diameter, d1/d2 [mm] and restricted rated torque [N·m]
Nominal bore dia.		8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45
Shaft tolerance h7(h6/g6)	B	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
Shaft tolerance j6(option)	J													○		○	○		○
Shaft tolerance k6(option)	K	○	○						○		○			○		○	○				○		○
SFC-025	d1	●	●	●	●	●	●	●	●
SFC-025	d2	●	●	●	●	●	●	●	●
SFC-030	d1	●	●	●	●	●	●	●	●
SFC-030	d2	●	●	●	●	●	●	●	●	●	●
SFC-035	d1	●	●	●	●	●	●	●	●	●	●
SFC-035	d2	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040	d1	9	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040	d2	9	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050	d1	18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050	d2	18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055	d1				31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055	d2				31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060	d1					50	51	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060	d2					50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-080	d1												●	●	●	●	●	●	●	●	●	●
SFC-080	d2												●	●	●	●	●	●	●	●	●	●	●	●
SFC-090	d1																	●	●	●	●	●	●	●
SFC-090	d2																	●	●	●	●	●	●	●	●	●
SFC-100	d1																				226	●	●	●	●	●
SFC-100	d2																				226	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Shaft tolerances j6/k6: designations J/K are optional, and are only supported for bore diameters marked with ○ .

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

Clean room compatibleIt is a clean room compatible product that has been cleaned, assembled (ISO class 6) and packed in consideration of its use in clean rooms.

SFC-□SA2(CC/CF)

[Specifications]

Model	shape TYPE	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	shape TYPE	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]
SFC-020SA2	C	2	0.02	1	±0.15	10000	3700	64	2.39×10^-6	0.025
SFC-025SA2	C	4	0.02	1	±0.19	10000	5600	60	3.67×10^-6	0.029
SFC-030SA2	A	5	0.02	1	±0.2	10000	8000	64	4.09×10^-6	0.034
	B								6.11×10^-6	0.040
	C								8.23×10^-6	0.048
SFC-035SA2	C	10	0.02	1	±0.25	10000	18000	112	18.50×10^-6	0.083
SFC-040SA2	A	12	0.02	1	±0.3	10000	20000	80	16.71×10^-6	0.077
	B								22.59×10^-6	0.085
	C								29.28×10^-6	0.100
SFC-050SA2	A	25	0.02	1	±0.4	10000	32000	48	56.26×10^-6	0.160
	B								76.71×10^-6	0.178
	C								99.38×10^-6	0.207
SFC-055SA2	C	40	0.02	1	±0.42	10000	50000	43	188.7×10^-6	0.315
SFC-060SA2	A	60	0.02	1	±0.45	10000	70000	76.4	147.0×10^-6	0.285
	B								206.3×10^-6	0.328
	C								270.0×10^-6	0.387
SFC-080SA2	C	100	0.02	1	±0.55	10000	140000	128	716.3×10^-6	0.720

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* Check the Standard Bore Diameter list as rated torque may be restricted by the holding power of the shaft connection component.

* Max. rotation speed does not take into account dynamic balance. * Torsional stiffness values given are measured values for the element alone.

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

[Dimensions]

Unit [mm]

Model	shape TYPE	d1		d2		D	N	L	LF	S	A1	A2	C	K	M	Tightening torque [N・m]
Model	shape TYPE	Min.	Max.	Min.	Max.	D	N	L	LF	S	A1	A2	C	K	M	CC Low dust	CF Fluorine
SFC-020SA2	C	5	10	5	11	26	-	23.15	10.75	1.65	-	9.5	3.3	10.6	1-M2.5	0.5	0.9
SFC-025SA2	C	5	14	5	14	29	-	23.4	10.75	1.9	-	11	3.3	14.5	1-M2.5	0.5	0.9
SFC-030SA2	A	5	10	5	10	34	21.6	27.3	12.4	2.5	8	-	3.75	14.5	1-M3	1.5	3.2
	B	5	10	Over 10	16		21.6				8	12.5
	C	Over 10	14	Over 10	16		-				-	12.5
SFC-035SA2	C	6	16	6	19	39	-	34	15.5	3	-	14	4.5	17	1-M4	4	7.7
SFC-040SA2	A	8	15	8	15	44	29.6	34	15.5	3	11	-	4.5	19.5	1-M4	4	7.7
	B	8	15	Over 15	24		29.6				11	17
	C	Over 15	19	Over 15	24		-				-	17
SFC-050SA2	A	8	19	8	19	56	38	43.4	20.5	2.4	14.5	-	6	26	1-M5	7	12
	B	8	19	Over 19	30		38				14.5	22
	C	Over 19	25	Over 19	30		-				-	22
SFC-055SA2	C	10	30	10	30	63	-	50.6	24	2.6	-	23	7.75	31	1-M6	13	22.5
SFC-060SA2	A	11	24	11	24	68	46	53.6	25.2	3.2	17.5	-	7.75	31	1-M6	13	22.5
	B	11	24	Over 24	35		46				17.5	26.5
	C	Over 24	30	Over 24	35		-				-	26.5
SFC-080SA2	C	18	35	18	40	82	-	68	30	8	-	28	9	38	1-M8	27	45

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* The K dimension is the inner diameter of the element. For d2 dimension exceeding this value, shaft can be inserted only up to LF dimension to the d2 side hub.

* The nominal diameter for the clamping bolt M is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.

* You can choose from two types of grease for clamp bolts: low dust generation grease and fluorine grease.

[Standard bore diameters] (Low dust generation grease)

Model	Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
Model	d1/d2	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40
SFC-020SA2	d1	0.5	0.6	0.6	0.6	1.0	1.3	1.3	●
SFC-020SA2	d2	0.5	0.6	0.6	0.6	1.0	1.3	1.3	●	●
SFC-025SA2	d1	0.5	0.5	0.5	0.5	0.8	0.8	0.8	1.8	1.8	2.3	2.3	●
SFC-025SA2	d2	0.5	0.5	0.5	0.5	0.8	0.8	0.8	1.8	1.8	2.3	2.3	●
SFC-030SA2	d1	0.8	1.6	2	2.6	3.4	4.4	4.9	●	●	●	●	●
SFC-030SA2	d2	0.8	1.6	2	2.6	3.4	4.4	4.9	●	●	●	●	●	●	●
SFC-035SA2	d1		3.3	3.8	4.8	6.3	7.7	8.5	9.2	●	●	●	●	●	●
SFC-035SA2	d2		3.3	3.8	4.8	6.3	7.7	8.5	9.2	●	●	●	●	●	●	●	●	●
SFC-040SA2	d1					9	9	9	9	9	●	●	●	●	●	●	●	●
SFC-040SA2	d2					9	9	9	9	9	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d1					11	16	17	19	19	24	24	24	●	●	●	●	●	●	●	●	●
SFC-050SA2	d2					11	16	17	19	19	24	24	24	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d1								20	24	29	33	37	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d2								20	24	29	33	37	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d1									38	41	44	48	55	55	58	●	●	●	●	●	●	●	●
SFC-060SA2	d2									38	41	44	48	55	55	58	●	●	●	●	●	●	●	●	●	●
SFC-080SA2	d1																54	60	65	75	85	90	●	●	●	●
SFC-080SA2	d2																54	60	65	75	85	90	●	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

[Standard bore diameters] (Fluorine grease)

Model	Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
Model	d1/d2	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40
SFC-020SA2	d1	0.7	0.7	0.7	0.8	●	●	●	●
SFC-020SA2	d2	0.7	0.7	0.7	0.8	●	●	●	●	●
SFC-025SA2	d1	0.5	0.5	0.5	1.1	1.6	1.6	1.6	3.2	3.2	●	●	●
SFC-025SA2	d2	0.5	0.5	0.5	1.1	1.6	1.6	1.6	3.2	3.2	●	●	●
SFC-030SA2	d1	0.8	2	2.4	3.1	4.3	●	●	●	●	●	●	●
SFC-030SA2	d2	0.8	2	2.4	3.1	4.3	●	●	●	●	●	●	●	●	●
SFC-035SA2	d1		3.6	5.2	6.4	8.2	●	●	●	●	●	●	●	●	●
SFC-035SA2	d2		3.6	5.2	6.4	8.2	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040SA2	d1					●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040SA2	d2					●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d1					11	17	19	20	22	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d2					11	17	19	20	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d1								28	37	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d2								28	37	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d1									40	44	49	53	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d2									40	44	49	53	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-080SA2	d1																60	66	71	81	90	95	●	●	●	●
SFC-080SA2	d2																60	66	71	81	90	95	●	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

SFC-□DA2(CC/CF)

[Specifications]

Model	shape TYPE	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	shape TYPE	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]
SFC-020DA2	C	2	0.15	1(On one side)	±0.33	10000	1850	32	3.43×10^-6	0.035
SFC-025DA2	C	4	0.16	1(On one side)	±0.38	10000	2800	30	5.26×10^-6	0.040
SFC-030DA2	A	5	0.18	1(On one side)	±0.4	10000	4000	32	7.46×10^-6	0.054
	B								9.49×10^-6	0.060
	C								11.60×10^-6	0.069
SFC-035DA2	C	10	0.24	1(On one side)	±0.5	10000	9000	562	27.03×10^-6	0.122
SFC-040DA2	A	12	0.24	1(On one side)	±0.6	10000	10000	40	30.03×10^-6	0.124
	B								35.81×10^-6	0.132
	C								42.60×10^-6	0.147
SFC-050DA2	A	25	0.28	1(On one side)	±0.8	10000	16000	24	99.32×10^-6	0.252
	B								119.8×10^-6	0.270
	C								142.4×10^-6	0.299
SFC-055DA2	C	40	0.31	1(On one side)	±0.84	10000	25000	21.5	262.3×10^-6	0.436
SFC-060DA2	A	60	0.34	1(On one side)	±0.9	10000	35000	38.2	258.6×10^-6	0.450
	B								317.8×10^-6	0.493
	C								381.6×10^-6	0.552
SFC-080DA2	C	100	0.52	1(On one side)	±1.10	10000	70000	64	1047×10^-6	1.050

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* Check the Standard Bore Diameter list as rated torque may be restricted by the holding power of the shaft connection component.

* Max. rotation speed does not take into account dynamic balance. * Torsional stiffness values given are measured values for the element alone.

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

[Dimensions]

Unit [mm]

Model	shape TYPE	d1		d2		D	N	L	LF	LP	S	A1	A2	C	d3	K	M	Tightening torque [N・m]
Model	shape TYPE	Min.	Max.	Min.	Max.	D	N	L	LF	LP	S	A1	A2	C	d3	K	M	CC Low dust	CF Fluorine
SFC-020DA2	C	5	10	5	11	26	-	32.3	10.75	7.5	1.65	-	9.5	3.3	10.6	10.6	1-M2.5	0.5	0.9
SFC-025DA2	C	5	14	5	14	29	-	32.8	10.75	7.5	1.9	-	11	3.3	15	14.5	1-M2.5	0.5	0.9
SFC-030DA2	A	5	10	5	10	34	21.6	37.8	12.4	8	2.5	8	-	3.75	15	14.5	1-M3	1.5	3.2
	B	5	10	Over 10	16		21.6					8	12.5
	C	Over 10	14	Over 10	16		-					-	12.5
SFC-035DA2	C	6	16	6	19	39	-	48	15.5	11	3	-	14	4.5	17	17	1-M4	4	7.7
SFC-040DA2	A	8	15	8	15	44	29.6	48	15.5	11	3	11	-	4.5	20	19.5	1-M4	4	7.7
	B	8	15	Over 15	24		29.6					11	17
	C	Over 15	24	Over 15	24		-					-	17
SFC-050DA2	A	8	19	8	19	56	38	59.8	20.5	14	2.4	14.5	-	6	26	26	1-M5	7	12
	B	8	19	Over 19	30		38					14.5	22
	C	Over 19	25	Over 19	30		-					-	22
SFC-055DA2	C	10	30	10	30	63	-	68.7	24	15.5	2.6	-	23	7.75	31	31	1-M6	13	22.5
SFC-060DA2	A	11	24	11	24	68	46	73.3	25.2	16.5	3.2	17.5	-	7.75	31	31	1-M6	13	22.5
	B	11	24	Over 24	35		46					17.5	26.5
	C	Over 24	30	Over 24	35		-					-	26.5
SFC-080DA2	C	18	35	18	40	82	-	98	30	22	8	-	28	9	40	38	1-M8	27	45

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* The K dimension is the inner diameter of the element. For d2 dimension exceeding this value, shaft can be inserted only up to LF dimension to the d2 side hub.

* The nominal diameter for the clamping bolt M is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.

* You can choose from two types of grease for clamp bolts: low dust generation grease and fluorine grease.

[Standard bore diameters] (Low dust generation grease)

Model	Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
Model	d1/d2	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40
SFC-020DA2	d1	0.5	0.6	0.6	0.6	1.0	1.3	1.3	●
SFC-020DA2	d2	0.5	0.6	0.6	0.6	1.0	1.3	1.3	●	●
SFC-025DA2	d1	0.5	0.5	0.5	0.5	0.8	0.8	0.8	1.8	1.8	2.3	2.3	●
SFC-025DA2	d2	0.5	0.5	0.5	0.5	0.8	0.8	0.8	1.8	1.8	2.3	2.3	●
SFC-030DA2	d1	0.8	1.6	2	2.6	3.4	4.4	4.9	●	●	●	●	●
SFC-030DA2	d2	0.8	1.6	2	2.6	3.4	4.4	4.9	●	●	●	●	●	●	●
SFC-035DA2	d1		3.3	3.8	4.8	6.3	7.7	8.5	9.2	●	●	●	●	●	●
SFC-035DA2	d2		3.3	3.8	4.8	6.3	7.7	8.5	9.2	●	●	●	●	●	●	●	●	●
SFC-040DA2	d1					9	9	9	9	9	●	●	●	●	●	●	●	●
SFC-040DA2	d2					9	9	9	9	9	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2	d1					11	16	17	19	19	24	24	24	●	●	●	●	●	●	●	●	●
SFC-050DA2	d2					11	16	17	19	19	24	24	24	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2	d1								20	24	29	33	37	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2	d2								20	24	29	33	37	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2	d1									38	41	44	48	55	55	58	●	●	●	●	●	●	●	●
SFC-060DA2	d2									38	41	44	48	55	55	58	●	●	●	●	●	●	●	●	●	●
SFC-080DA2	d1																54	60	65	75	85	90	●	●	●	●
SFC-080DA2	d2																54	60	65	75	85	90	●	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

[Standard bore diameters] (Fluorine grease)

Model	Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
Model	d1/d2	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40
SFC-020DA2	d1	0.7	0.7	0.7	0.8	●	●	●	●
SFC-020DA2	d2	0.7	0.7	0.7	0.8	●	●	●	●	●
SFC-025DA2	d1	0.5	0.5	0.5	1.1	1.6	1.6	1.6	3.2	3.2	●	●	●
SFC-025DA2	d2	0.5	0.5	0.5	1.1	1.6	1.6	1.6	3.2	3.2	●	●	●
SFC-030DA2	d1	0.8	2	2.4	3.1	4.3	●	●	●	●	●	●	●
SFC-030DA2	d2	0.8	2	2.4	3.1	4.3	●	●	●	●	●	●	●	●	●
SFC-035DA2	d1		3.6	5.2	6.4	8.2	●	●	●	●	●	●	●	●	●
SFC-035DA2	d2		3.6	5.2	6.4	8.2	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040DA2	d1					●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040DA2	d2					●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2	d1					11	17	19	20	22	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050DA2	d2					11	17	19	20	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2	d1								28	37	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055DA2	d2								28	37	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2	d1									40	44	49	53	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2	d2									40	44	49	53	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-080DA2	d1																60	66	71	81	90	95	●	●	●	●
SFC-080DA2	d2																60	66	71	81	90	95	●	●	●	●	●	●

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

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Basic Specifications

Max. rated torque 8000 N･m

Standard bore-drilling range 22 mm to 115 mm

Backlash Zero

Basic Specifications

Max. transmission torque 0.623N・m（Air gap 1mm）

Bore ranges 10mm～25mm

Basic Specifications

Max. rated torque 220 N･m

Bore ranges 3 mm to 35 mm

Operating temperature -30℃ to 100℃

Basic Specifications

Max. rated torque 800 N･m

Bore ranges 8 mm to 80 mm

Backlash Zero

SFC Models

Features of SFC Models

SFC Models Specifications

Lineup

Structure and Materials

Options of SFC Models

Tapered shaft supportedAllows coupling clamping hub when a taper adapter is mounted on the tapered shaft of a servo motor.

For length-specified special order partsSFC-□DA2 type spacer length can be changed to attain the necessary distance between shafts. Specify the length in 1 mm units.

For keyway milling applicationsIf you are using a keyed shaft, we can mill a keyway in the clamping hub to your specifications.

Clean room compatibleIt is a clean room compatible product that has been cleaned, assembled (ISO class 6) and packed in consideration of its use in clean rooms.

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