SFH Models

Features

Specifications

Structure and Materials

Downloads

Choose your own mounting system

Pilot-bore products are a standard part of the line-up, so they can handle shaft coupling by means of a key, shaft coupling by shrink-fitting, and more. SFH S/G-K-K types that use frictional coupling are also available, giving you freedom in choosing your mounting method.

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.

Low noise

A design that covers the outer periphery of the disc spring with the flange and embeds pressure bolts within the pressurization flange minimizes raised and lowered surfaces on the outer periphery and end surfaces. This can greatly reduce whistling at high speeds.

SFH S Types

[Specifications]　SFH-□S

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］
SFH-150S	1000	1	±0.4	5900	1500000	244	12.60×10^-3	4.71
SFH-170S	1300	1	±0.5	5100	2840000	224	26.88×10^-3	7.52
SFH-190S	2000	1	±0.5	4700	3400000	244	43.82×10^-3	10.57
SFH-210S	4000	1	±0.55	4300	4680000	508	68.48×10^-3	13.78
SFH-220S	5000	1	±0.6	4000	5940000	448	102.53×10^-3	18.25
SFH-260S	8000	1	±0.7	3400	10780000	612	233.86×10^-3	29.66

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

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

[Dimensions]　SFH-□S

Model	d1, d2			D	N	L	LF	S	F	K	M
Model	Pilot bore	Min.	Max.	D	N	L	LF	S	F	K	M
SFH-150S	20	22	70	152	104	101	45	11	5	94	6-M8×36
SFH-170S	25	28	80	178	118	124	55	14	6	108	6-M10×45
SFH-190S	30	32	85	190	126	145	65	15	10	116	6-M12×54
SFH-210S	35	38	90	210	130	165	75	15	8	124	6-M16×60
SFH-220S	45	48	100	225	144	200	90	20	-2	132	6-M16×60
SFH-260S	50	55	115	262	166	223	100	23	11	150	6-M20×80

*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.

[Specifications]　SFH-□S-□K-□K

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］
SFH-150S	1000	1	±0.4	5900	1500000	244	25.14×10^-3	8.95
SFH-170S	1300	1	±0.5	5100	2840000	224	47.90×10^-3	12.53
SFH-190S	2000	1	±0.5	4700	3400000	244	60.40×10^-3	14.21
SFH-210S	4000	1	±0.55	4300	4680000	508	80.50×10^-3	16.12

*Max. rotation speed does not take into account dynamic balance. *The moment of inertia and mass in the table are measured for the maximum bore diameter.

[Dimensions]　SFH-□S-□K-□K

Model	D	L	d1, d2	N1, N2	LF	S	C	K	M	M1	M2
SFH-150S	152	157	38, 40, 42, 45, 48, 50	108	65	11	8	94	6-M8×36	6-M8×60	3-M8
SFH-150S	152	157	55, 56, 60, 65, 70	128	65	11	8	94	6-M8×36	6-M8×60	3-M8
SFH-170S	178	160	38, 40, 42, 45, 48, 50	108	65	14	8	108	6-M10×45	6-M8×60	3-M8
			55, 56, 60, 65, 70	128
			75, 80	148
SFH-190S	190	175	38, 40, 42, 45, 48, 50	108	70	15	10	116	6-M12×54	6-M10×65	3-M10
			55, 56, 60, 65, 70	128
			75, 80, 85	148
SFH-210S	210	181	38, 40, 42, 45, 48, 50	108	73	15	10	124	6-M16×60	6-M10×65	3-M10
			55, 56, 60, 65, 70	128
			75, 80, 85, 90	148

*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.

[Standard bore diameter combinations]

Model	Standard bore diameters d1, d2 ［mm］
Model	38	40	42	45	48	50	55	56	60	65	70	75	80	85	90
SFH-150S	●	●	●	●	●	●	●	●	●	●	●
SFH-170S	1100	1200	1250	●	●	●	●	●	●	●	●	●	●
SFH-190S	1800	1900	●	●	●	●	●	●	●	●	●	●	●	●
SFH-210S	1800	1900	2000	2150	2300	2400	2600	2650	2850	3100	3350	3600	3800	●	●

*The bore diameters marked with ● or 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].

SFH G Types

[Specifications]　SFH-□G

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］
SFH-150G	1000	1.4	1 (On one side)	±0.8	5900	750000	122	21.87×10^-3	8.72
SFH-170G	1300	1.6	1 (On one side)	±1.0	5100	1420000	112	51.07×10^-3	13.94
SFH-190G	2000	2.0	1 (On one side)	±1.0	4700	1700000	122	81.58×10^-3	19.51
SFH-210G	4000	2.1	1 (On one side)	±1.1	4300	2340000	254	125.50×10^-3	24.26
SFH-220G	5000	2.3	1 (On one side)	±1.2	4000	2970000	224	176.91×10^-3	30.27
SFH-260G	8000	2.9	1 (On one side)	±1.4	3400	5390000	306	433.47×10^-3	53.11

*Max. rotation speed does not take into account dynamic balance. *The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]　SFH-□G

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
SFH-150G	20	22	70	152	104	182	45	70	11	5	94	12-M8×36
SFH-170G	25	28	80	178	118	218	55	80	14	6	108	12-M10×45
SFH-190G	30	32	85	190	126	260	65	100	15	10	116	12-M12×54
SFH-210G	35	38	90	210	130	290	75	110	15	8	124	12-M16×60
SFH-220G	45	48	100	225	144	335	90	115	20	-2	132	12-M16×60
SFH-260G	50	55	115	262	166	391	100	145	23	11	150	12-M20×80

*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 [mm]. Please contact Miki Pulley for assistance if LS ≧ 1000. *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 for Vertical Applications with Max. LS Dimensions] SFH-□G-□K-□K

Model	LS ［mm］
SFH-150G	1100
SFH-170G	800
SFH-190G	900
SFH-210G	2000
SFH-220G	1900
SFH-260G	2500

*When considering vertical use and the LS dimension is greater than that in the above table, consult Miki Pulley.

[Specifications] SFH-□G-□K-□K

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］
SFH-150G	1000	1.4	1 (On one side)	±0.8	5900	750000	122	34.41×10^-3	12.96
SFH-170G	1300	1.6	1 (On one side)	±1.0	5100	1420000	112	72.09×10^-3	18.95
SFH-190G	2000	2.0	1 (On one side)	±1.0	4700	1700000	122	98.15×10^-3	23.14
SFH-210G	4000	2.1	1 (On one side)	±1.1	4300	2340000	254	137.53×10^-3	26.61

*Max. rotation speed does not take into account dynamic balance. *The moment of inertia and mass in the table are measured for the maximum bore diameter.

[Dimensions] SFH-□G-□K-□K

Model	D	L	d1, d2	N1, N2	LF	LS	S	C	K	M	M1	M2
SFH-150G	152	238	38, 40, 42, 45, 48, 50	108	65	70	11	8	94	12-M8×36	6-M8×60	3-M8
SFH-150G	152	238	55, 56, 60, 65, 70	128	65	70	11	8	94	12-M8×36	6-M8×60	3-M8
SFH-170G	178	254	38, 40, 42, 45, 48, 50	108	65	80	14	8	108	12-M10×45	6-M8×60	3-M8
			55, 56, 60, 65, 70	128
			75, 80	148
SFH-190G	190	290	38, 40, 42, 45, 48, 50	108	70	100	15	10	116	12-M12×54	6-M10×65	3-M10
			55, 56, 60, 65, 70	128
			75, 80, 85	148
SFH-210G	210	306	38, 40, 42, 45, 48, 50	108	73	110	15	10	124	12-M16×60	6-M10×65	3-M10
			55, 56, 60, 65, 70	128
			75, 80, 85, 90	148

*If you require a product with an LS dimension other than that above, contact Miki Pulley with your required dimension [mm]. 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 quantities for the pressure bolt M1 and detachment screw hole M2 are quantities for the hub on one side.

[Combination of Standard Bore Diameter]

Model	Standard bore diameters d1, d2 ［mm］
Model	38	40	42	45	48	50	55	56	60	65	70	75	80	85	90
SFH-150G	●	●	●	●	●	●	●	●	●	●	●
SFH-170G	1100	1200	1250	●	●	●	●	●	●	●	●	●	●
SFH-190G	1800	1900	●	●	●	●	●	●	●	●	●	●	●	●
SFH-210G	1800	1900	2000	2150	2300	2400	2600	2650	2850	3100	3350	3600	3800	●	●

[Dimensions for Vertical Applications with Max. LS Dimensions]

Unit ［mm］

Model	LS ［mm］
SFH-150G	1100
SFH-170G	800
SFH-190G	900
SFH-210G	2000