SFS Models

Features

Specifications

Structure and Materials

Downloads

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 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
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
SFS-06S-□M-□M	40	1	±0.8	5000	29000	45	0.30×10^-3	0.70
SFS-08S-□M-□M	80	1	±1.0	5000	83000	60	0.93×10^-3	1.30
SFS-09S-□M-□M	180	1	±1.2	5000	170000	122	1.80×10^-3	1.80
SFS-10S-□M-□M	250	1	±1.4	5000	250000	160	2.70×10^-3	2.30
SFS-12S-□M-□M	450	1	±1.6	5000	430000	197	6.80×10^-3	4.10
SFS-14S-35M-35M	580	1	±1.8	5000	780000	313	14.01×10^-3	6.40
SFS-06S-□M-11C	40	1	±0.8	5000	29000	45	0.29×10^-3	0.60
SFS-06S-15M-16C	40	1	±0.8	5000	29000	45	0.34×10^-3	0.70
SFS-08S-□M-16C	80	1	±1.0	5000	83000	60	0.84×10^-3	1.20
SFS-09S-□M-16C	180	1	±1.2	5000	170000	122	1.50×10^-3	1.60

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

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

[Dimensions]

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. See the standard hole-drilling standards for information on bore drilling.

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

[Dimensions]

Model	Bore diameter	d1	d2	D	N1	N2	L	LF1	LF2	S	C	K	M	M1	M2
SFS-06S	□M-□M	12, 14, 15	12, 14, 15	68	40	40	65.6	25	25	6	4.8	30	4-M6×25	4-M5	2-M5
SFS-08S	□M-□M	15, 16, 20, 22	15, 16, 20, 22	82	54	54	75.6	30	30	6	4.8	38	4-M6×29	4-M6	2-M6
SFS-09S	□M-□M	25, 28	25, 28	94	58	58	77.6	30	30	8	4.8	42	4-M8×36	6-M6	2-M6
SFS-09S	□M-35M	25, 28	35	94	58	68	85.6	30	38	8	4.8	42	4-M8×36	6-M6	2-M6
SFS-10S	□M-□M	25, 28, 30, 35	25, 28, 30, 35	104	68	68	89.6	35	35	10	4.8	48	4-M8×36	6-M6	2-M6
SFS-12S	□M-□M^*1	30, 35	30, 35	126	78	78	101.6	40	40	11	5.3	54	4-M10×45	4-M8	2-M8
SFS-14S	35M-35M	35	35	144	88	88	112.6	45	45	12	5.3	61	4-M12×54	6-M8	2-M8

*The nominal diameters of each bolt and tap are equal to the quantity minus the nominal diameter of the screw threads times the nominal length. The quantities for the pressure bolt M1 and detachment screw hole M2 are quantities for the hub on one side.

*The rated torque of SFS-12S-30M- □ M in note *1 is limited by the ø30 shaft coupling mechanism and is 380 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.

*For non-standard hole diameters, the allowable torque may be subject to restrictions. Please check.

[Dimensions]

Model	Bore diameter	d1	d2	W^+0.030_-0	T^+0.30_-0	d4	J	D	N1	N2	L	LF1	LF2	S	C	K	M	M1	M2
SFS-06S	□M-11C	12, 14, 15	11	4	12.2	18	9	68	40	30	60.8	25	25	6	4.8	30	4-M6×25	4-M5	2-M5
SFS-06S	15M-16C	15	16	5	17.3	28	10	68	40	40	75.8	25	40	6	4.8	30	4-M6×25	4-M5	2-M5
SFS-08S	□M-16C	15, 16, 20, 22	16	5	17.3	28	10	82	54	40	80.8	30	40	6	4.8	38	4-M6×29	4-M6	2-M6
SFS-09S	□M-16C	25, 28	16	5	17.3	28	10	94	58	40	82.8	30	40	8	4.8	42	4-M8×36	6-M6	2-M6

*The nominal diameters of each bolt and tap are equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

*The recommended processing tolerance for paired mounting shafts of the hub on the friction-coupled side is h7(h6･g6).

*For non-standard hole diameters, the allowable torque may be subject to restrictions. Please check.

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
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
SFS-06W-□M-□M	40	0.3	1 (On one side)	±1.6	5000	14000	22	0.41×10^-3	0.90
SFS-08W-□M-□M	80	0.3	1 (On one side)	±2.0	5000	41000	30	1.16×10^-3	1.60
SFS-09W-□M-□M	180	0.5	1 (On one side)	±2.4	5000	85000	61	2.40×10^-3	2.50
SFS-10W-□M-□M	250	0.5	1 (On one side)	±2.8	5000	125000	80	3.70×10^-3	3.00
SFS-12W-□M-□M	450	0.6	1 (On one side)	±3.2	4400	215000	98	9.50×10^-3	5.60
SFS-14W-35M-35M	580	0.7	1 (On one side)	±3.6	3800	390000	156	19.11×10^-3	8.60
SFS-06W-□M-11C	40	0.3	1 (On one side)	±1.6	5000	14000	22	0.40×10^-3	0.80
SFS-06W-15M-16C	40	0.3	1 (On one side)	±1.6	5000	14000	22	0.45×10^-3	0.90
SFS-08W-□M-16C	80	0.3	1 (On one side)	±2.0	5000	41000	30	1.07×10^-3	1.50
SFS-09W-□M-16C	180	0.5	1 (On one side)	±2.4	5000	85000	61	2.10×10^-3	2.30

*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. See the standard hole-drilling standards for information on bore drilling.

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

[Dimensions]

Model	Bore diameter	d1	d2	D	N1	N2	L	LF1	LF2	LP	S	C	d3	K	M	M1	M2
SFS-06W	□M-□M	12, 14, 15	12, 14, 15	68	40	40	83.6	25	25	12	6	4.8	24	30	8-M6×18	4-M5	2-M5
SFS-08W	□M-□M	15, 16, 20, 22	15, 16, 20, 22	82	54	54	93.6	30	30	12	6	4.8	28	38	8-M6×20	4-M6	2-M6
SFS-09W	□M-□M	25, 28	25, 28	94	58	58	107.6	30	30	22	8	4.8	32	42	8-M8×27	6-M6	2-M6
SFS-09W	□M-35M	25, 28	35	94	58	68	115.6	30	38	22	8	4.8	32	42	8-M8×27	6-M6	2-M6
SFS-10W	□M-□M	25, 28, 30, 35	25, 28, 30, 35	104	68	68	119.6	35	35	20	10	4.8	34	48	8-M8×27	6-M6	2-M6
SFS-12W	□M-□M^*1	30, 35	30, 35	126	78	78	137.6	40	40	25	11	5.3	40	54	8-M10×32	4-M8	2-M8
SFS-14W	35M-35M	35	35	144	88	88	154.6	45	45	30	12	5.3	46	61	8-M12×38	6-M8	2-M8

*The rated torque of SFS-12W-30M- □ M in note *1 is limited by the ø35 shaft coupling mechanism and is 380 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.

*For non-standard hole diameters, the allowable torque may be subject to restrictions. Please check.

[Dimensions]

Model	Bore diameter	d1	d2	W^+0.030_-0	T^+0.3_-0	d4	J	D	N1	N2	L	LF1	LF2	LP	S	C	d3	K	M	M1	M2
SFS-06W	□M-11C	12, 14, 15	11	4	12.2	18	9	68	40	30	78.8	25	25	12	6	4.8	24	30	8-M6×18	4-M5	2-M5
SFS-06W	15M-16C	15	16	5	17.3	28	10	68	40	40	93.8	25	40	12	6	4.8	24	30	8-M6×18	4-M5	2-M5
SFS-08W	□M-16C	15, 16, 20, 22	16	5	17.3	28	10	82	54	40	98.8	30	40	12	6	4.8	28	38	8-M6×20	4-M6	2-M6
SFS-09W	□M-16C	25, 28	16	5	17.3	28	10	94	58	40	112.8	30	40	22	8	4.8	32	42	8-M8×27	6-M6	2-M6

*The nominal diameters of each bolt and tap are equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

*The recommended processing tolerance for paired mounting shafts of the hub on the friction-coupled side is h7(h6･g6).

*For non-standard hole diameters, the allowable torque may be subject to restrictions. Please check.

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
SFS-05G-C	15	0.5	1 (On one side)	±1.2	20000	8000	21	0.20×10^-3	0.50
SFS-06G-C	30	0.5	1 (On one side)	±1.6	16000	14000	22	0.55×10^-3	0.90
SFS-08G-C	60	0.5	1 (On one side)	±2.0	13000	41000	30	1.50×10^-3	1.70
SFS-09G-C	135	0.6	1 (On one side)	±2.4	12000	85000	61	2.90×10^-3	2.40
SFS-10G-C	190	0.6	1 (On one side)	±2.8	10000	125000	80	4.60×10^-3	3.30
SFS-12G-C	340	0.8	1 (On one side)	±3.2	8000	215000	98	11.80×10^-3	5.80
SFS-14G-C	600	0.9	1 (On one side)	±3.6	7000	390000	156	21.20×10^-3	8.60
SFS-06G-□M-□M	40	0.5	1 (On one side)	±1.6	5000	14000	22	0.55×10^-3	1.10
SFS-08G-□M-□M	80	0.5	1 (On one side)	±2.0	5000	41000	30	1.56×10^-3	2.00
SFS-09G-□M-□M	180	0.6	1 (On one side)	±2.4	5000	85000	61	3.10×10^-3	2.80
SFS-10G-□M-□M	250	0.6	1 (On one side)	±2.8	5000	125000	80	4.70×10^-3	3.50
SFS-12G-□M-□M	450	0.8	1 (On one side)	±3.2	5000	215000	98	12.10×10^-3	6.50
SFS-14G-35M-35M	580	0.9	1 (On one side)	±3.6	5000	390000	156	25.31×10^-3	10.10
SFS-06G-□M-11C	40	0.5	1 (On one side)	±1.6	5000	14000	22	0.54×10^-3	1.00
SFS-06G-15M-16C	40	0.5	1 (On one side)	±1.6	5000	14000	22	0.59×10^-3	1.10
SFS-08G-□M-16C	80	0.5	1 (On one side)	±2.0	5000	41000	30	1.47×10^-3	1.90
SFS-09G-□M-16C	180	0.6	1 (On one side)	±2.4	5000	85000	61	2.80×10^-3	2.60

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

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

[Dimensions]

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. See the standard hole-drilling standards for information on bore drilling.

*If you require a product with an LS dimension other than that above, contact Miki Pulley with your required dimension. Please contact Miki Pulley for assistance if LS ≧ 1000.

*Please note that when the LS dimension exceeds 100 mm with the electroless nickel plating option (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.

[Dimensions]

Model	Bore diameter	d1	d2	D	N1	N2	L	LF1	LF2	LS	S	C	K	M	M1	M2
SFS-06G	□M-□M	12, 14, 15	12, 14, 15	68	40	40	95.6	25	25	24	6	4.8	30	8-M6×25	4-M5	2-M5
SFS-08G	□M-□M	15, 16, 20, 22	15, 16, 20, 22	82	54	54	107.6	30	30	26	6	4.8	38	8-M6×29	4-M6	2-M6
SFS-09G	□M-□M	25, 28	25, 28	94	58	58	115.6	30	30	30	8	4.8	42	8-M8×36	6-M6	2-M6
SFS-09G	□M-35M	25, 28	35	94	58	68	123.6	30	38	30	8	4.8	42	8-M8×36	6-M6	2-M6
SFS-10G	□M-□M	25, 28, 30, 35	25, 28, 30, 35	104	68	68	129.6	35	35	30	10	4.8	48	8-M8×36	6-M6	2-M6
SFS-12G	□M-□M^*1	30, 35	30, 35	126	78	78	150.6	40	40	38	11	5.3	54	8-M10×45	4-M8	2-M8
SFS-14G	35M-35M	35	35	144	88	88	170.6	45	45	46	12	5.3	61	8-M12×54	6-M8	2-M8

*If you require a product with an LS dimension other than that above, contact Miki Pulley with your required dimension. Please contact Miki Pulley for assistance if LS ≧ 1000.

*The rated torque of SFS-12G-30M- □ M in note *1 is limited by the ø30 shaft coupling mechanism and is 380 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.

*For non-standard hole diameters, the allowable torque may be subject to restrictions. Please check.

[Dimensions]

Model	Bore diameter	d1	d2	W^+0.030_-0	T^+0.3_-0	d4	J	D	N1	N2	L	LF1	LF2	LS	S	C	K	M	M1	M2
SFS-06G	□M-11C	12, 14, 15	11	4	12.2	18	9	68	40	30	90.8	25	25	24	6	4.8	30	8-M6×25	4-M5	2-M5
SFS-06G	15M-16C	15	16	5	17.3	28	10	68	40	40	105.8	25	40	24	6	4.8	30	8-M6×25	4-M5	2-M5
SFS-08G	□M-16C	15, 16, 20, 22	16	5	17.3	28	10	82	54	40	112.8	30	40	26	6	4.8	38	8-M6×29	4-M6	2-M6
SFS-09G	□M-16C	25, 28	16	5	17.3	28	10	94	58	40	120.8	30	40	30	8	4.8	42	8-M8×36	6-M6	2-M6

*If you require a product with an LS dimension other than that above, contact Miki Pulley with your required dimension. Please contact Miki Pulley for assistance if LS ≧ 1000.

*The nominal diameters of each bolt and tap are equal to the quantity minus the nominal diameter of the screw threads times the nominal length.

*The recommended processing tolerance for paired mounting shafts of the hub on the friction-coupled side is h7(h6･g6).

*For non-standard hole diameters, the allowable torque may be subject to restrictions. Please check.

[Standard Hole-drilling Standards]

Models compliant with the old JIS standards (Class 2)					Models compliant with the new JIS standards (H9)					Models compliant with the new JIS standards (JS 9)					Models compliant with the new JIS standards (P9)
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	Bore diameter (d1, d2)	Keyway width (W1, W2)	Keyway height (T1, T2)	Setscrew hole (M)	Nominal bore diameter	Bore diameter (d1, d2)	Keyway width (W1, W2)	Keyway height (T1, T2)	Set screw hole (M)
Tolerance	H7, H8	E9	^+0.3₀	－	Tolerance	H7, H8	H9	^+0.3₀	－	Tolerance	H7, H8	JS9	^+0.3₀	－	Tolerance	H7, H8	P9	^+0.3₀	－
8	8^+0.022₀	－	－	2-M4	8H	8^+0.022₀	3^+0.025₀	9.4	2-M4	8J	8^+0.022₀	3±0.0125	9.4	2-M4	8P	8^+0.022₀	3^-0.006_-0.031	9.4	2-M4
9	9^+0.022₀	－	－	2-M4	9H	9^+0.022₀	3^+0.025₀	10.4	2-M4	9J	9^+0.022₀	3±0.0125	10.4	2-M4	9P	9^+0.022₀	3^-0.006_-0.031	10.4	2-M4
10	10^+0.022₀	－	－	2-M4	10H	10^+0.022₀	3^+0.025₀	11.4	2-M4	10J	10^+0.022₀	3±0.0125	11.4	2-M4	10P	10^+0.022₀	3^-0.006_-0.031	11.4	2-M4
11	11^+0.018₀	－	－	2-M4	11H	11^+0.018₀	4^+0.030₀	12.8	2-M4	11J	11^+0.018₀	4±0.0150	12.8	2-M4	11P	11^+0.018₀	4^-0.012_-0.042	12.8	2-M4
12	12^+0.018₀	4^+0.050_+0.020	13.5	2-M4	12H	12^+0.018₀	4^+0.030₀	13.8	2-M4	12J	12^+0.018₀	4±0.0150	13.8	2-M4	12P	12^+0.018₀	4^-0.012_-0.042	13.8	2-M4
14	14^+0.018₀	5^+0.050_+0.020	16.0	2-M4	14H	14^+0.018₀	5^+0.030₀	16.3	2-M4	14J	14^+0.018₀	5±0.0150	16.3	2-M4	14P	14^+0.018₀	5^-0.012_-0.042	16.3	2-M4
15	15^+0.018₀	5^+0.050_+0.020	17.0	2-M4	15H	15^+0.018₀	5^+0.030₀	17.3	2-M4	15J	15^+0.018₀	5±0.0150	17.3	2-M4	15P	15^+0.018₀	5^-0.012_-0.042	17.3	2-M4
16	16^+0.018₀	5^+0.050_+0.020	18.0	2-M4	16H	16^+0.018₀	5^+0.030₀	18.3	2-M4	16J	16^+0.018₀	5±0.0150	18.3	2-M4	16P	16^+0.018₀	5^-0.012_-0.042	18.3	2-M4
17	17^+0.018₀	5^+0.050_+0.020	19.0	2-M4	17H	17^+0.018₀	5^+0.030₀	19.3	2-M4	17J	17^+0.018₀	5±0.0150	19.3	2-M4	17P	17^+0.018₀	5^-0.012_-0.042	19.3	2-M4
18	18^+0.018₀	5^+0.050_+0.020	20.0	2-M4	18H	18^+0.018₀	6^+0.030₀	20.8	2-M5	18J	18^+0.018₀	6±0.0150	20.8	2-M5	18P	18^+0.018₀	6^-0.012_-0.042	20.8	2-M5
19	19^+0.021₀	5^+0.050_+0.020	21.0	2-M4	19H	19^+0.021₀	6^+0.030₀	21.8	2-M5	19J	19^+0.021₀	6±0.0150	21.8	2-M5	19P	19^+0.021₀	6^-0.012_-0.042	21.8	2-M5
20	20^+0.021₀	5^+0.050_+0.020	22.0	2-M4	20H	20^+0.021₀	6^+0.030₀	22.8	2-M5	20J	20^+0.021₀	6±0.0150	22.8	2-M5	20P	20^+0.021₀	6^-0.012_-0.042	22.8	2-M5
22	22^+0.021₀	7^+0.061_+0.025	25.0	2-M6	22H	22^+0.021₀	6^+0.030₀	24.8	2-M5	22J	22^+0.021₀	6±0.0150	24.8	2-M5	22P	22^+0.021₀	6^-0.012_-0.042	24.8	2-M5
24	24^+0.021₀	7^+0.061_+0.025	27.0	2-M6	24H	24^+0.021₀	8^+0.036₀	27.3	2-M6	24J	24^+0.021₀	8±0.0180	27.3	2-M6	24P	24^+0.021₀	8^-0.015_-0.051	27.3	2-M6
25	25^+0.021₀	7^+0.061_+0.025	28.0	2-M6	25H	25^+0.021₀	8^+0.036₀	28.3	2-M6	25J	25^+0.021₀	8±0.0180	28.3	2-M6	25P	25^+0.021₀	8^-0.015_-0.051	28.3	2-M6
28	28^+0.021₀	7^+0.061_+0.025	31.0	2-M6	28H	28^+0.021₀	8^+0.036₀	31.3	2-M6	28J	28^+0.021₀	8±0.0180	31.3	2-M6	28P	28^+0.021₀	8^-0.015_-0.051	31.3	2-M6
30	30^+0.021₀	7^+0.061_+0.025	33.0	2-M6	30H	30^+0.021₀	8^+0.036₀	33.3	2-M6	30J	30^+0.021₀	8±0.0180	33.3	2-M6	30P	30^+0.021₀	8^-0.015_-0.051	33.3	2-M6
32	32^+0.025₀	10^+0.061_+0.025	35.5	2-M8	32H	32^+0.025₀	10^+0.036₀	35.3	2-M8	32J	32^+0.025₀	10±0.0180	35.3	2-M8	32P	32^+0.025₀	10^-0.015_-0.051	35.3	2-M8
35	35^+0.025₀	10^+0.061_+0.025	38.5	2-M8	35H	35^+0.025₀	10^+0.036₀	38.3	2-M8	35J	35^+0.025₀	10±0.0180	38.3	2-M8	35P	35^+0.025₀	10^-0.015_-0.051	38.3	2-M8
38	38^+0.025₀	10^+0.061_+0.025	41.5	2-M8	38H	38^+0.025₀	10^+0.036₀	41.3	2-M8	38J	38^+0.025₀	10±0.0180	41.3	2-M8	38P	38^+0.025₀	10^-0.015_-0.051	41.3	2-M8
40	40^+0.025₀	10^+0.061_+0.025	43.5	2-M8	40H	40^+0.025₀	12^+0.043₀	43.3	2-M8	40J	40^+0.025₀	12±0.0215	43.3	2-M8	40P	40^+0.025₀	12^-0.018_-0.061	43.3	2-M8
42	42^+0.025₀	12^+0.075_+0.032	45.5	2-M8	42H	42^+0.025₀	12^+0.043₀	45.3	2-M8	42J	42^+0.025₀	12±0.0215	45.3	2-M8	42P	42^+0.025₀	12^-0.018_-0.061	45.3	2-M8
45	45^+0.025₀	12^+0.075_+0.032	48.5	2-M8	45H	45^+0.025₀	14^+0.043₀	48.8	2-M10	45J	45^+0.025₀	14±0.0215	48.8	2-M10	45P	45^+0.025₀	14^-0.018_-0.061	48.8	2-M10
48	48^+0.025₀	12^+0.075_+0.032	51.5	2-M8	48H	48^+0.025₀	14^+0.043₀	51.8	2-M10	48J	48^+0.025₀	14±0.0215	51.8	2-M10	48P	48^+0.025₀	14^-0.018_-0.061	51.8	2-M10
50	50^+0.025₀	12^+0.075_+0.032	53.5	2-M8	50H	50^+0.025₀	14^+0.043₀	53.8	2-M10	50J	50^+0.025₀	14±0.0215	53.8	2-M10	50P	50^+0.025₀	14^-0.018_-0.061	53.8	2-M10
55	55^+0.030₀	15^+0.075_+0.032	60.0	2-M10	55H	55^+0.030₀	16^+0.043₀	59.3	2-M10	55J	55^+0.030₀	16±0.0215	59.3	2-M10	55P	55^+0.030₀	16^-0.018_-0.061	59.3	2-M10
56	56^+0.030₀	15^+0.075_+0.032	61.0	2-M10	56H	56^+0.030₀	16^+0.043₀	60.3	2-M10	56J	56^+0.030₀	16±0.0215	60.3	2-M10	56P	56^+0.030₀	16^-0.018_-0.061	60.3	2-M10
60	60^+0.030₀	15^+0.075_+0.032	65.0	2-M10	60H	60^+0.030₀	18^+0.043₀	64.4	2-M10	60J	60^+0.030₀	18±0.0215	64.4	2-M10	60P	60^+0.030₀	18^-0.018_-0.061	64.4	2-M10

Models compliant with the new motor standards
Nominal bore diameter	Bore diameter (d1, d2)	Keyway width (W1, W2)	Keyway height (T1, T2)	Set screw hole (M)
Tolerance	G7, F7	H9	^+0.3₀	－
14N	14^+0.024_+0.006	5^+0.030₀	16.3	2-M4
19N	19^+0.028_+0.007	6^+0.030₀	21.8	2-M5
24N	24^+0.028_+0.007	8^+0.036₀	27.3	2-M6
28N	28^+0.028_+0.007	8^+0.036₀	31.3	2-M6
38N	38^+0.050_+0.025	10^+0.036₀	41.3	2-M8
42N	42^+0.050_+0.025	12^+0.043₀	45.3	2-M8
48N	48^+0.050_+0.025	14^+0.043₀	51.8	2-M10
55N	55^+0.060_+0.030	16^+0.043₀	59.3	2-M10
60N	60^+0.060_+0.030	18^+0.043₀	64.4	2-M10

Distance from set screw edge

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

[Standard Hole-drilling Standards]

Unit ［mm］

SFS-06		Standard bore diameter d2 ［mm］
SFS-06		12M	14M	15M	16M	20M	22M	25M	28M	30M	35M
Standard bore diameter d1 ［mm］	12M	●	●	●
	14M		●	●
	15M			●

Unit ［mm］

SFS-08		Standard bore diameter d2 ［mm］
SFS-08		12M	14M	15M	16M	20M	22M	25M	28M	30M	35M
Standard bore diameter d1 ［mm］	15M			●	●	●	●
	16M				●	●	●
	20M					●	●
	22M						●

Unit ［mm］

SFS-09		Standard bore diameter d2 ［mm］
SFS-09		12M	14M	15M	16M	20M	22M	25M	28M	30M	35M
Standard bore diameter d1 ［mm］	25M							●	●		●
Standard bore diameter d1 ［mm］	28M								●		●

Unit ［mm］

SFS-10		Standard bore diameter d2 ［mm］
SFS-10		12M	14M	15M	16M	20M	22M	25M	28M	30M	35M
Standard bore diameter d1 ［mm］	25M							●	●	●	●
	28M								●	●	●
	30M									●	●
	35M										●

Unit ［mm］

SFS-12		Standard bore diameter d2 ［mm］
SFS-12		12M	14M	15M	16M	20M	22M	25M	28M	30M	35M
Standard bore diameter d1 ［mm］	30M									380	380
Standard bore diameter d1 ［mm］	35M										●

Unit ［mm］

SFS-14		Standard bore diameter d2 ［mm］
SFS-14		12M	14M	15M	16M	20M	22M	25M	28M	30M	35M
Standard bore diameter d1 ［mm］	35M										●

*Bore diameters marked with ● and numbers are supported as standard bore diameter.

*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 value [N·m].

*Consult Miki Pulley regarding special arrangements for other bore diameters.However, restrictions may apply to the allowable torque in the case of small hole diameters, so please check.

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SFS-05S	(Shaft bore diameter[d1]:8~20 Shaft bore diameter[d2]:8~20)
SFS-06S	(Shaft bore diameter[d1]:8~25 Shaft bore diameter[d2]:8~25)
SFS-08S	(Shaft bore diameter[d1]:11~35 Shaft bore diameter[d2]:11~35)
SFS-09S	(Shaft bore diameter[d1]:11~38 Shaft bore diameter[d2]:11~38)
SFS-10S	(Shaft bore diameter[d1]:16~42 Shaft bore diameter[d2]:16~42)
SFS-12S	(Shaft bore diameter[d1]:19~50 Shaft bore diameter[d2]:19~50)
SFS-14S	(Shaft bore diameter[d1]:22~60 Shaft bore diameter[d2]:22~60)

SFS Models

Wide line-up

Electroless nickel plating also available

High-precision mounting

Can be assembled from part components

SFS S Types

[Specifications]

[Dimensions]

[Dimensions]

[Dimensions]

SFS W Types

[Specifications]

[Dimensions]

[Dimensions]

[Dimensions]

SFS G Types

[Specifications]

[Dimensions]

[Dimensions]

[Dimensions]

[Standard Hole-drilling Standards]

Distance from set screw edge

[Standard Hole-drilling Standards]

Lineup

SFS S

SFS S-□M-□M

SFS S-□M-□C

SFS S C

SFS W

SFS G

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