SFC Models

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SFC Models Specifications

SFC-SA2 Types
SFC-DA2 Types

SFC-SA2 Types

[Specifications]

Model	Rated torque ［N・m］	Misalignment			Max. rotation speed ［min^-1］	Torsional stiffness ［N・m/rad］	Axial stiffness［N/mm］	Type	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］	Type	Moment of inertia ［kg・m²］	Mass ［kg］
SFC-002SA2	0.25	0.01	0.5	±0.04	10000	190	34	C	0.06×10^-6	0.003
SFC-005SA2	0.6	0.02	0.5	±0.05	10000	500	140	C	0.26×10^-6	0.007
SFC-010SA2	1	0.02	1	±0.1	10000	1400	140	C	0.58×10^-6	0.011
SFC-020SA2	2	0.02	1	±0.15	10000	3700	64	C	2.39×10^-6	0.025
SFC-025SA2	4	0.02	1	±0.19	10000	5600	60	C	3.67×10^-6	0.029
SFC-030SA2	5	0.02	1	±0.2	10000	8000	64	A	4.07×10^-6	0.034
								B	6.09×10^-6	0.041
								C	8.20×10^-6	0.049
SFC-035SA2	10	0.02	1	±0.25	10000	18000	112	C	18.44×10^-6	0.082
SFC-040SA2	12	0.02	1	±0.3	10000	20000	80	A	16.71×10^-6	0.077
								B	22.55×10^-6	0.085
								C	29.25×10^-6	0.100
SFC-050SA2	25	0.02	1	±0.4	10000	32000	48	A	55.71×10^-6	0.159
								B	76.26×10^-6	0.177
								C	99.03×10^-6	0.206
SFC-055SA2	40	0.02	1	±0.42	10000	50000	43	C	188.0×10^-6	0.314
SFC-060SA2	60	0.02	1	±0.45	10000	70000	76.4	A	145.9×10^-6	0.283
								B	205.0×10^-6	0.326
								C	268.6×10^-6	0.385
SFC-080SA2	100	0.02	1	±0.55	10000	140000	128	C	710.6×10^-6	0.708
SFC-090SA2	180	0.02	1	±0.65	10000	100000	108	C	1236×10^-6	0.946
SFC-100SA2	250	0.02	1	±0.74	10000	120000	111	C	1891×10^-6	1.202

*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	d1^*1		d2^*1		D	DB	N	L	LF	S	A1	A2	C	K	M	Tightening torque ［N・m］	Type
Model	Min.	Max.	Min.	Max.	D	DB	N	L	LF	S	A1	A2	C	K	M	Tightening torque ［N・m］	Type
SFC-002SA2	3	5	3	5	12	12.4	─	12.35	5.9	0.55	─	3.7	1.9	5.6	1-M1.6	0.23～0.28	C
SFC-005SA2	3	6	3	6	16	─	─	16.7	7.85	1	─	4.8	2.5	6.5	1-M2	0.4～0.5	C
SFC-010SA2	3	8	3	8	19	─	─	19.35	9.15	1.05	─	5.8^＊2	3.15	8.5	1-M2.5^*3	1.0～1.1^＊3	C
SFC-020SA2	4	10	4	11	26	─	─	23.15	10.75	1.65	─	9.5	3.3	10.6	1-M2.5	1.0～1.1	C
SFC-025SA2	5	14	5	14	29	─	─	23.4	10.75	1.9	─	11	3.3	14.5	1-M2.5	1.0～1.1	C
SFC-030SA2	5	10	5	10	34	─	21.6	27.3	12.4	2.5	8	─	3.75	14.5	1-M3	1.5～1.9	A
	5	10	Over 10	16			21.6				8	12.5					B
	Over 10	14	Over 10	16			─				─	12.5					C
SFC-035SA2	6	16	6	19	39	─	─	34	15.5	3	─	14	4.5	17	1-M4	3.4～4.1	C
SFC-040SA2	8	15	8	15	44	─	29.6	34	15.5	3	11	─	4.5	19.5	1-M4	3.4～4.1	A
	8	15	Over 15	24			29.6				11	17					B
	Over 15	19	Over 15	24			─				─	17					C
SFC-050SA2	8	19	8	19	56	─	38	43.4	20.5	2.4	14.5	─	6	26	1-M5	7.0～8.5	A
	8	19	Over 19	30			38				14.5	22					B
	Over 19	25	Over 19	30			─				─	22					C
SFC-055SA2	10	30	10	30	63	─	─	50.6	24	2.6	─	23	7.75	31	1-M6	14～15	C
SFC-060SA2	11	24	11	24	68	─	46	53.6	25.2	3.2	17.5	─	7.75	31	1-M6	14～15	A
	11	24	Over 24	35			46				17.5	26.5					B
	Over 24	30	Over 24	35			─				─	26.5					C
SFC-080SA2	18	35	18	40	82	─	─	68	30	8	─	28	9	38	1-M8	27～30	C
SFC-090SA2	25	40	25	45	94	─	─	68.3	30	8.3	─	34	9	42	1-M8	27～30	C
SFC-100SA2	32	45	32	45	104	─	─	69.8	30	9.8	─	39	9	48	1-M8	27～30	C

*The rated torque of the coupling may be limited for bore diameters marked with *1. Consult "Standard Bore Diameters".

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

*For items marked with *2, d1 or d2 may be from ø3 to ø7 in some cases. If d1 or d2 is ø8, this value is 6.

*For items marked with *3, d1 or d2 may be from ø3 to ø7 in some cases. If d1 or d2 is ø8, then this is M2. The M2 tightening torque is 04 to 0.5 N·m.

*The recommended processing tolerance for paired mounting shafts is g6･h6･h7 class. However, for a shaft diameter of ø35, the tolerance is －0.025 to ＋0.010. Consult Miki Pulley for special tolerances other than h7(h6･g6) class.

[Standard bore diameter]

Model	Standard bore diameter d1 ［mm］		Standard bore diameter d2 ［mm］
Model	Min.	Max.	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
SFC-002SA2	3	5	●	●	●
SFC-005SA2	3	6	●	●	●	●
SFC-010SA2	3	8	●	●	●	●	●	●	●
SFC-020SA2	4	10		●	●	●	●	●	●	●	●	●	○
SFC-025SA2	5	14			2.1	●	●	●	●	●	●	●	●	●	●	●
SFC-030SA2	5	14			2.8	3.4	●	●	●	●	●	●	●	●	●	●	○	○
SFC-035SA2	6	16				5	5	6.6	●	●	●	●	●	●	●	●	●	●	○	○	○
SFC-040SA2	8	19							9	●	●	●	●	●	●	●	●	●	●	●	●	○	○	○
SFC-050SA2	8	25							18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	○	○
SFC-055SA2	10	30										31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	11	30											50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	○	○
SFC-080SA2	18	35																		●	●	●	●	●	●	●	●	●	●	○	○
SFC-090SA2	25	40																							●	●	●	●	●	●	●	○	○
SFC-100SA2	32	45																										226	●	●	●	●	●

*Bore diameters marked with ● , ○ , or numbers are supported as the standard bore diameters.

*Bore diameters marked with ○ have restrictions on the inner diameter of the element, so they can only be used with d2 side hubs. Example of product that cannot be manufactured: SFC-020SA2-11B-11B; example of product that can be manufactured: SFC-020SA2-10B-11B

*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].

*These range of applicable bore diameters is between the minimum and maximum bore diameters of the dimensions table. Consult Miki Pulley regarding special arrangements for other bore diameters.

SFC-DA2 Types

[Specifications]

Model	Rated torque ［N・m］	Misalignment			Max. rotation speed ［min^-1］	Torsional stiffness ［N・m/rad］	Axial stiffness［N/mm］	Type	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］	Type	Moment of inertia ［kg・m²］	Mass ［kg］
SFC-002DA2	0.25	0.03	0.5 (On one side)	±0.08	10000	95	17	C	0.07×10^-6	0.004
SFC-005DA2	0.6	0.05	0.5 (On one side)	±0.1	10000	250	70	C	0.37×10^-6	0.010
SFC-010DA2	1	0.11	1 (On one side)	±0.2	10000	700	70	C	0.80×10^-6	0.015
SFC-020DA2	2	0.15	1 (On one side)	±0.33	10000	1850	32	C	3.43×10^-6	0.035
SFC-025DA2	4	0.16	1 (On one side)	±0.38	10000	2800	30	C	5.26×10^-6	0.040
SFC-030DA2	5	0.18	1 (On one side)	±0.4	10000	4000	32	A	7.43×10^-6	0.054
								B	9.45×10^-6	0.060
								C	11.56×10^-6	0.068
SFC-035DA2	10	0.24	1 (On one side)	±0.5	10000	9000	56	C	26.93×10^-6	0.121
SFC-040DA2	12	0.24	1 (On one side)	±0.6	10000	10000	40	A	29.98×10^-6	0.124
								B	35.82×10^-6	0.131
								C	42.52×10^-6	0.146
SFC-050DA2	25	0.28	1 (On one side)	±0.8	10000	16000	24	A	98.34×10^-6	0.250
								B	118.9×10^-6	0.268
								C	141.7×10^-6	0.298
SFC-055DA2	40	0.31	1 (On one side)	±0.9	10000	25000	21.5	C	261.3×10^-6	0.459
SFC-060DA2	60	0.34	1 (On one side)	±0.9	10000	35000	38.2	A	256.6×10^-6	0.447
								B	315.7×10^-6	0.489
								C	379.3×10^-6	0.549
SFC-080DA2	100	0.52	1 (On one side)	±1.10	10000	70000	64	C	1039×10^-6	1.037
SFC-090DA2	180	0.52	1 (On one side)	±1.30	10000	50000	54	C	1798×10^-6	1.369
SFC-100DA2	250	0.55	1 (On one side)	±1.48	10000	60000	55.5	C	2754×10^-6	1.739

*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	d1^*1		d2^*1		D	DB	N	L	LF	LP	S	A1	A2	C	d3	K	M	Tightening torque ［N・m］	Type
Model	Min.	Max.	Min.	Max.	D	DB	N	L	LF	LP	S	A1	A2	C	d3	K	M	Tightening torque ［N・m］	Type
SFC-002DA2	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	0.23～0.28	C
SFC-005DA2	3	6	3	6	16	─	─	23.2	7.85	5.5	1	─	4.8	2.5	6.5	6.5	1-M2	0.4～0.5	C
SFC-010DA2	3	8	3	8	19	─	─	25.9	9.15	5.5	1.05	─	5.8^＊2	3.15	8.5	8.5	1-M2.5^*3	1.0～1.1^＊3	C
SFC-020DA2	4	10	4	11	26	─	─	32.3	10.75	7.5	1.65	─	9.5	3.3	10.6	10.6	1-M2.5	1.0～1.1	C
SFC-025DA2	5	14	5	14	29	─	─	32.8	10.75	7.5	1.9	─	11	3.3	15	14.5	1-M2.5	1.0～1.1	C
SFC-030DA2	5	10	5	10	34	─	21.6	37.8	12.4	8	2.5	8	─	3.75	15	14.5	1-M3	1.5～1.9	A
	5	10	Over 10	16			21.6					8	12.5						B
	Over 10	14	Over 10	16			─					─	12.5						C
SFC-035DA2	6	16	6	19	39	─	─	48	15.5	11	3	─	14	4.5	17	17	1-M4	3.4～4.1	C
SFC-040DA2	8	15	8	15	44	─	29.6	48	15.5	11	3	11	─	4.5	20	19.5	1-M4	3.4～4.1	A
	8	15	Over 15	24			29.6					11	17						B
	Over 15	19	Over 15	24			─					─	17						C
SFC-050DA2	8	19	8	19	56	─	38	59.8	20.5	14	2.4	14.5	─	6	26	26	1-M5	7.0～8.5	A
	8	19	Over 19	30			38					14.5	22						B
	Over 19	25	Over 19	30			─					─	22						C
SFC-055DA2	10	30	10	30	63	─	─	68.7	24	15.5	2.6	─	23	7.75	31	31	1-M6	14～15	C
SFC-060DA2	11	24	11	24	68	─	46	73.3	25.2	16.5	3.2	17.5	─	7.75	31	31	1-M6	14～15	A
	11	24	Over 24	35			46					17.5	26.5						B
	Over 24	30	Over 24	35			─					─	26.5						C
SFC-080DA2	18	35	18	40	82	─	─	98	30	22	8	─	28	9	40	38	1-M8	27～30	C
SFC-090DA2	25	40	25	45	94	─	─	98.6	30	22	8.3	─	34	9	47	42	1-M8	27～30	C
SFC-100DA2	32	45	32	45	104	─	─	101.6	30	22	9.8	─	39	9	50	48	1-M8	27～30	C

*The rated torque of the coupling may be limited for bore diameters marked with *1. Consult "Standard Bore Diameters".

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

*For items marked with *2, d1 or d2 may be from ø3 to ø7 in some cases. If d1 or d2 is ø8, this value is 6.

*For items marked with *3, d1 or d2 may range from φ3 mm to φ7 mm. The value is M2 for a d1 or d2 of φ8 mm. The tightening torque for M2 is 0.4 N·m to 0.5 N·m.

[Standard bore diameter]

Model	Standard bore diameter d1 ［mm］		Standard bore diameter d2 ［mm］
Model	Min.	Max.	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
SFC-002DA2	3	5	●	●	●
SFC-005DA2	3	6	●	●	●	●
SFC-010DA2	3	8	●	●	●	●	●	●	●
SFC-020DA2	4	10		●	●	●	●	●	●	●	●	●	○
SFC-025DA2	5	14			2.1	●	●	●	●	●	●	●	●	●	●	●
SFC-030DA2	5	14			2.8	3.4	●	●	●	●	●	●	●	●	●	●	○	○
SFC-035DA2	6	16				5	5	6.6	●	●	●	●	●	●	●	●	●	●	○	○	○
SFC-040DA2	8	19							9	●	●	●	●	●	●	●	●	●	●	●	●	○	○	○
SFC-050DA2	8	25							18	20	22	22	●	●	●	●	●	●	●	●	●	●	●	●	●	○	○
SFC-055DA2	10	30										31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060DA2	11	30											50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	○	○
SFC-080DA2	18	35																		●	●	●	●	●	●	●	●	●	●	○	○
SFC-090DA2	25	40																							●	●	●	●	●	●	●	○	○
SFC-100DA2	32	45																										226	●	●	●	●	●

*Bore diameters marked with ● , ○ , or numbers are supported as the standard bore diameters.

*Bore diameters marked with ○ have restrictions on the inner diameter of the element, so they can only be used with d2 side hubs. Example of product that cannot be manufactured: SFC-020DA2-11B-11B; example of product that can be manufactured: SFC-020DA2-10B-11B

*These range of applicable bore diameters is between the minimum and maximum bore diameters of the dimensions table. Consult Miki Pulley regarding special arrangements for other bore diameters.

Lineup

Structure and Materials

SFC SA2

SFC DA2

SFC SA2/DA2 BC

Options of SFC Models

Tapered shaft supported
- • SFC SA2
  Specifications
  Dimensions
- • SFC DA2
  Specifications
  Dimensions
For length-specifi ed special order parts
- • SFC DA2
  Specifications
  Dimensions
For keyway milling applications
- • SFC SA2/DA2
  Dimensions
  Standard Bore Diameter

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

SFC SA2

Specifications

Model	Rated torque ［N·m]	Misalignment			Max. rotation speed ［min^-1]	Torsional stiffness ［N·m/rad]	Axial stiffness ［N/mm]	Type	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]	Type	Moment of inertia［kg·m²]	Mass ［kg]
SFC-040SA2-□B-11BC	12	0.02	1	±0.3	10000	20000	80	B	26.58×10^-6	0.131
SFC-040SA2-□B-11BC	12	0.02	1	±0.3	10000	20000	80	C	33.28×10^-6	0.146
SFC-050SA2-□B-11BC	25	0.02	1	±0.4	10000	32000	48	B	82.91×10^-6	0.240
SFC-050SA2-□B-11BC	25	0.02	1	±0.4	10000	32000	48	C	103.5×10^-6	0.258
SFC-050SA2-□B-14BC	25	0.02	1	±0.4	10000	32000	48	B	88.72×10^-6	0.271
SFC-050SA2-□B-14BC	25	0.02	1	±0.4	10000	32000	48	C	111.5×10^-6	0.301
SFC-050SA2-□B-16BC	25	0.02	1	±0.4	10000	32000	48	B	95.44×10^-6	0.309
SFC-050SA2-□B-16BC	25	0.02	1	±0.4	10000	32000	48	C	118.2×10^-6	0.338
SFC-055SA2-□B-14BC	40	0.02	1	±0.42	10000	50000	43	C	201.1×10^-6	0.409
SFC-055SA2-□B-16BC	40	0.02	1	±0.42	10000	50000	43	C	207.8×10^-6	0.446
SFC-060SA2-□B-16BC	60	0.02	1	±0.45	10000	70000	76.4	B	228.7×10^-6	0.475
SFC-060SA2-□B-16BC	60	0.02	1	±0.45	10000	70000	76.4	C	287.8×10^-6	0.517

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

*Torsional stiff ness 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
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

*The shape is type B or type C.

SFC DA2

Specifications

Model	Rated torque ［N·m]	Misalignment			Max. rotation speed ［min^-1]	Torsional stiffness ［N·m/rad]	Axial stiffness ［N/mm]	Type	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]	Type	Moment of inertia［kg·m²]	Mass ［kg]
SFC-040DA2-□B-11BC	12	0.24	1(On one side)	±0.6	10000	10000	40	B	39.42×10^-6	0.180
SFC-040DA2-□B-11BC	12	0.24	1(On one side)	±0.6	10000	10000	40	C	46.12×10^-6	0.195
SFC-050DA2-□B-11BC	25	0.28	1 (On one side)	±0.8	10000	16000	24	B	125.5×10^-6	0.331
SFC-050DA2-□B-11BC	25	0.28	1 (On one side)	±0.8	10000	16000	24	C	146.1×10^-6	0.349
SFC-050DA2-□B-14BC	25	0.28	1 (On one side)	±0.8	10000	16000	24	B	131.1×10^-6	0.362
SFC-050DA2-□B-14BC	25	0.28	1 (On one side)	±0.8	10000	16000	24	C	154.1×10^-6	0.392
SFC-050DA2-□B-16BC	25	0.28	1 (On one side)	±0.8	10000	16000	24	B	138.1×10^-6	0.400
SFC-050DA2-□B-16BC	25	0.28	1 (On one side)	±0.8	10000	16000	24	C	160.8×10^-6	0.430
SFC-055DA2-□B-14BC	40	0.31	1 (On one side)	±0.84	10000	25000	21.5	C	274.0×10^-6	0.530
SFC-055DA2-□B-16BC	40	0.31	1 (On one side)	±0.84	10000	25000	21.5	C	280.5×10^-6	0.567
SFC-060DA2-□B-16BC	60	0.34	1 (On one side)	±0.9	10000	35000	38.2	B	339.4×10^-6	0.638
SFC-060DA2-□B-16BC	60	0.34	1 (On one side)	±0.9	10000	35000	38.2	C	398.5×10^-6	0.681

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

*Torsional stiff ness 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
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

*The shape is type B or type C.

Tapered shaft supported
- • SFC SA2
  Specifications
  Dimensions
- • SFC DA2
  Specifications
  Dimensions
For length-specifi ed special order parts
- • SFC DA2
  Specifications
  Dimensions
For keyway milling applications
- • SFC SA2/DA2
  Dimensions
  Standard Bore Diameter

For length-specifi ed special order parts SFC DA2 couplings can be made in specific lengths that match the distance between shafts by changing the length of the spacer. Specify the length in 1 mm units.

SFC DA2

Specifications

Model	Rated torque ［N·m]	Misalignment				Max. rotation speed ［min^-1]	Type	Moment of inertia［kg·m²]		Mass ［kg]
		Parallel ［mm] Min. L	Parallel ［mm] Max. L	Angular ［°]	Axial ［mm]			Moment of inertia［kg·m²]		Mass ［kg]
		Parallel ［mm] Min. L	Parallel ［mm] Max. L	Angular ［°]	Axial ［mm]			Min. L	Max. L	Min. L	Max. L
SFC-005DA2	0.6	0.03	0.20	0.5 (On one side)	±0.1	10000	C	0.33×10^-6	0.62×10^-6	0.009	0.017
SFC-010DA2	1	0.08	0.44	1 (On one side)	±0.2	10000	C	0.72×10^-6	1.38×10^-6	0.014	0.026
SFC-020DA2	2	0.10	0.46	1 (On one side)	±0.33	10000	C	3.02×10^-6	5.30×10^-6	0.031	0.054
SFC-025DA2	4	0.09	0.46	1 (On one side)	±0.38	10000	C	4.55×10^-6	7.95×10^-6	0.036	0.061
SFC-030DA2	5	0.11	0.48	1 (On one side)	±0.4	10000	A	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	10	0.15	0.54	1 (On one side)	±0.5	10000	C	23.85×10^-6	35.97×10^-6	0.108	0.161
SFC-040DA2	12	0.15	0.54	1 (On one side)	±0.6	10000	A	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	25	0.16	0.63	1 (On one side)	±0.8	10000	A	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	40	0.16	0.60	1 (On one side)	±0.84	10000	C	226.8×10^-6	325.0×10^-6	0.378	0.538
SFC-060DA2	60	0.19	0.63	1 (On one side)	±0.9	10000	A	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

*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^*1		d2^*1		D	N	L			LF	S	A1	A2	C	d3	K	M	Tightening torque [N·m]	Type
Model	Min.	Max.	Min.	Max.	D	N	Std.	Min.	Max.	LF	S	A1	A2	C	d3	K	M	Tightening torque [N·m]	Type
SFC-005DA2	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	C
SFC-010DA2	3	8	3	8	19	--	25.9	24	45	9.15	1.05	--	5.8^*2	3.15	8.5	8.5	1-M2.5^*3	1.0 to 1.1^*3	C
SFC-020DA2	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	C
SFC-025DA2	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	C
SFC-030DA2	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	A
	5	10	>10	16		21.6						8	12.5						B
	>10	14	>10	16		--						--	12.5						C
SFC-035DA2	6	16	6	19	39	--	48	43	65	15.5	3	--	14	4.5	17	17	1-M4	3.4 to 4.1	C
SFC-040DA2	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	A
	8	15	>15	24		29.6						11	17						B
	>15	19	>15	24		--						--	17						C
SFC-050DA2	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	A
	8	19	>19	30		38						14.5	22						B
	>19	25	>19	30		--						--	22						C
SFC-055DA2	10	30	10	30	63	--	68.7	60	85	24	2.6	--	23	7.75	31	31	1-M6	14 to 15	C
SFC-060DA2	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	A
	11	24	>24	35		46						17.5	26.5						B
	>24	30	>24	35		--						--	26.5						C

*Check "Standard Bore Diameters," for the standard bore diameters. Also, the rated torque of the coupling may be limited for bore diameters marked with *1, so check that as well.

*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.

*For items marked with *2, d1 or d2 may be from ø3 to ø7 in some cases. If d1 or d2 is ø8, this value is 6.

*For items marked with *3, d1 or d2 may be from ø3 to ø7 in some cases. If d1 or d2 is ø8, then this is M2. The M2 tightening torque is 04 to 0.5 N·m.

*The recommended processing tolerance for paired mounting shafts is h7(h6･g6) class. However, for a shaft diameter of ø35, the tolerance is -0.025 to +0.010. Consult Miki Pulley for special tolerances other than h7(h6･g6) class.

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

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

Tapered shaft supported
- • SFC SA2
  Specifications
  Dimensions
- • SFC DA2
  Specifications
  Dimensions
For length-specifi ed special order parts
- • SFC DA2
  Specifications
  Dimensions
For keyway milling applications
- • SFC SA2/DA2
  Dimensions
  Standard Bore Diameter

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

SFC SA2/DA2

Dimensions

Unit [mm]

Compatible with H9 Class standard keyway widths				Compatible with Js9 Class standard keyway widths
Nominal bore diameter	Bore diameter (d1, d2)	Keyway width (W1, W2)	Keyway height (T1, T2)	Nominal bore diameter	Bore diameter (d1, d2)	Keyway width (W1, W2)	Keyway height (T1, T2)
8BH	8	3^+0.025₀	9.4^+0.3₀	8BJ	8	3±0.0125	9.4^+0.3₀
9BH	9	3^+0.025₀	10.4^+0.3₀	9BJ	9	3±0.0125	10.4^+0.3₀
10BH	10	3^+0.025₀	11.4^+0.3₀	10BJ	10	3±0.0125	11.4^+0.3₀
11BH	11	4^+0.030₀	12.8^+0.3₀	11BJ	11	4±0.0150	12.8^+0.3₀
12BH	12	4^+0.030₀	13.8^+0.3₀	12BJ	12	4±0.0150	13.8^+0.3₀
13BH	13	5^+0.030₀	15.3^+0.3₀	13BJ	13	5±0.0150	15.3^+0.3₀
14BH	14	5^+0.030₀	16.3^+0.3₀	14BJ	14	5±0.0150	16.3^+0.3₀
15BH	15	5^+0.030₀	17.3^+0.3₀	15BJ	15	5±0.0150	17.3^+0.3₀
16BH	16	5^+0.030₀	18.3^+0.3₀	16BJ	16	5±0.0150	18.3^+0.3₀
17BH	17	5^+0.030₀	19.3^+0.3₀	17BJ	17	5±0.0150	19.3^+0.3₀
18BH	18	6^+0.030₀	20.8^+0.3₀	18BJ	18	6±0.0150	20.8^+0.3₀
19BH	19	6^+0.030₀	21.8^+0.3₀	19BJ	19	6±0.0150	21.8^+0.3₀
20BH	20	6^+0.030₀	22.8^+0.3₀	20BJ	20	6±0.0150	22.8^+0.3₀
22BH	22	6^+0.030₀	24.8^+0.3₀	22BJ	22	6±0.0150	24.8^+0.3₀
24BH	24	8^+0.036₀	27.3^+0.3₀	24BJ	24	8±0.0180	27.3^+0.3₀
25BH	25	8^+0.036₀	28.3^+0.3₀	25BJ	25	8±0.0180	28.3^+0.3₀
28BH	28	8^+0.036₀	31.3^+0.3₀	28BJ	28	8±0.0180	31.3^+0.3₀
30BH	30	8^+0.036₀	33.3^+0.3₀	30BJ	30	8±0.0180	33.3^+0.3₀
32BH	32	10^+0.036₀	35.3^+0.3₀	32BJ	32	10±0.0180	35.3^+0.3₀
35BH	35	10^+0.036₀	38.3^+0.3₀	35BJ	35	10±0.0180	38.3^+0.3₀
38BH	38	10^+0.036₀	41.3^+0.3₀	38BJ	38	10±0.0180	41.3^+0.3₀
40BH	40	12^+0.043₀	43.3^+0.3₀	40BJ	40	12±0.0215	43.3^+0.3₀
42BH	42	12^+0.043₀	45.3^+0.3₀	42BJ	42	12±0.0215	45.3^+0.3₀
45BH	45	14^+0.043₀	48.8^+0.3₀	45BJ	45	14±0.0215	48.8^+0.3₀

*We can also handle standards not listed above. Consult Miki Pulley.

Standard Bore Diameter

Model	Standard bore diameter, d2 (mm)
Model	8	9	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45
SFC-025SA2/DA2	●	●	●	●	●	●	●
SFC-030SA2/DA2	●	●	●	●	●	●	●	○	○
SFC-035SA2/DA2	●	●	●	●	●	●	●	●	●	○	○	○
SFC-040SA2/DA2	9	●	●	●	●	●	●	●	●	●	●	●	○	○	○
SFC-050SA2/DA2	18	20	22	●	●	●	●	●	●	●	●	●	●	●	●	●	○	○
SFC-055SA2/DA2			31	34	36	38	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2/DA2				50	51	●	●	●	●	●	●	●	●	●	●	●	●	●	○	○
SFC-080SA2/DA2											●	●	●	●	●	●	●	●	●	●	○	○
SFC-090SA2/DA2																●	●	●	●	●	●	●	○	○
SFC-100SA2/DA2																			226	●	●	●	●	●

*Bore diameters marked with ● , ○ , or numbers are supported as the standard bore diameters.

*Bore diameters marked with ○ have restrictions on the inner diameter of the element, so they can only be used with d2 side hubs.

*Bore diameters whose fi elds 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].

Related Product

Basic Specifications

Max. nominal torque 1.5 N･m

Bore ranges 3 mm to 18 mm

Backlash Zero

Basic Specifications

Max. nominal torque 220 N･m

Bore ranges 3 mm to 35 mm

Operating temperature -30℃ to 100℃

Basic Specifications

Max. rated torque 180N･m

Bore ranges 20mm to 42mm

Backlash Zero

Basic Specifications

Max. nominal torque 5000 N･m

Pilot-bore additional processing range 9 mm to 130 mm

Operating temperature -30℃ to 95℃

SFC Models

Features of SFC Models

SFC Models Specifications

Lineup

Structure and Materials

Options of SFC Models

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

For length-specifi ed special order parts SFC DA2 couplings can be made in specific lengths that match the distance between shafts by changing the length of the spacer. Specify the length in 1 mm units.

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

Related Product