Is it possible to transmit sufficient torque by using clamp method for fastening to the shaft?

As our torque transmission tests use an adequate safety coefficient, the fastened part will not slip due to the fastening method at the allowable torque in the catalog. Key grooving of the clamp hub is available; please refer to the key groove modification options as you desired.

Noise and vibration were generated while using the metal sheet spring coupling. What countermeasures are available?

For servo motors, noise and vibration can be suppressed by setting a mechanical resonance control filter in the control system to the fixed frequency. For stepper motors, shift the operating RPM or absorb/control vibration with a step flex coupling with high damping effects.

Please note that the MISUMI Pune office and warehouse will be closed on November 20th due to the state election.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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SFH-170G

O.D. Full Length Allowable Torque Range Allowable Misalignment Max. Rotational Speed Range Allowable Torque Allowable Angular Misalignment Allowable Lateral Misalignment Maximum Rotation Speed type Allowable Lateral Misalignment Range Days to Ship

Specification/Dimensions

O.D.(Ø)
152

178

190

210

225

262
Clear
Full Length(mm)
101

124

200

218

223

260

290

335

391
Clear
Allowable Torque Range(N•m)
1000～Less than 5000

5000～Less than 10000
Clear
Allowable Misalignment
- Angular Misalignment
- Eccentricity
- Axial Misalignment
Clear
Max. Rotational Speed Range(r/min)
2001~4000

4001~10000
Clear
Allowable Torque(N•m)
1000

1300

2000

4000

5000

8000
Clear
Allowable Angular Misalignment(deg)
1

2
Clear
Allowable Lateral Misalignment(mm)
1.6

2

2.1

2.3

2.9
Clear
Maximum Rotation Speed(r/min)
3400

4000

4300

4700

5100

5900
Clear
type
- SFH
Clear
Allowable Lateral Misalignment Range(mm)
1.1~3.0
Clear

Days to Ship

All

14 Day(s) or Less

19 Day(s) or Less
Clear

Specify Alterations

Servo FlexSFH

Name: Servo FlexSFH
Brand: MIKI PULLEY
Availability: PreOrder

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MIKI PULLEY

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(i)
Caution

Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

Product Description

Large type metal plate spring coupling.

Structure and material of SFH model

Structural drawing of SFH S

Structural drawing of SFH G

Structural drawing of SFH S-□K-□K

Structural drawing of SFH G-□K-□K

Drawing and dimensions of SFH S TYPE

Drawing and dimensions of SFH-□S

Drawing of SFH-□S

(Unit: mm)

Model	d1, d2			D	N	L	LF	S	F	K	M
Model	Pilot hole	Minimum	Maximum	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

* The pilot hole is a drilled hole. For hole machining, please refer to the standard hole drilling standards.
* The nominal of the reamer bolt M is the quantity - the nominal thread size × the nominal length.

Drawing and dimensions of SFH-□S-□K-□K

Drawing of SFH-□S-□K-□K

(Unit: mm)

Model	D	L	d1, d2	N1·N2	LF	S	C	K	M	M1	M2
SFH-150S	152	157	38·40·42·45·50	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	38·40·42·45·50	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	38·40·42·45·50	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	38·40·42·45·50	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 of each bolt and tap is the quantity - the nominal thread size × the nominal length, and the quantity of the pressure bolt M1 and the removal screw hole M2 is the quantity of the flange on one side.

Drawing and dimensions of SFH G TYPE

Drawing and dimensions of SFH-□G

Drawing of SFH-□S-□K-□K

(Unit: mm)

Model	d1, d2			D	N	L	LF	LS	S	F	K	M
Model	Pilot hole	Minimum	Maximum	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

* The pilot hole is a drilled hole. For hole machining, please refer to the standard hole drilling standards.
* The nominal of the reamer bolt M is the quantity - the nominal thread size × the nominal length.

Drawing and dimensions of SFH-□G-□K-□K

Drawing of SFH-□G-□K-□K

(Unit: mm)

Model	D	L	d1, d2	N1·N2	LF	LS	S	C	K	M	M1	M2
SFH-150G	152	238	38·40·42·45·50	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	38·40·42·45·50	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	38·40·42·45·50	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	38·40·42·45·50	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

* The nominal of each bolt and tap is the quantity - the nominal thread size × the nominal length, and the quantity of the pressure bolt M1 and the removal screw hole M2 is the quantity of the flange on one side.

: 30; 45; 60

Part Number
SFH-170G
SFH-190G
SFH-210G
SFH-220G
SFH-260G

Price	Minimum Order Qty.	Days to Ship	RoHS	O.D. (Ø)	Full Length (mm)	Allowable Torque Range (N•m)	Allowable Misalignment	Max. Rotational Speed Range (r/min)	Allowable Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Allowable Lateral Misalignment Range (mm)	Maximum Rotation Speed (r/min)	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg･m²)	Allowable Angular Misalignment Detail (deg)
₹ 138,693.51	1 Piece(s)	19 Day(s) or more	10	178	218	1000～Less than 5000	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	1300	2	1.6	1.1~3.0	5100	1	51.24×10^-3	1 (one side)
₹ 180,269.16	1 Piece(s)	19 Day(s) or more	10	190	260	1000～Less than 5000	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	2000	2	2	1.1~3.0	4700	1	81.25×10^-3	1 (one side)
₹ 233,246.96	1 Piece(s)	19 Day(s) or more	10	210	290	1000～Less than 5000	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	4000	2	2.1	1.1~3.0	4300	1.1	124.70×10^-3	1 (one side)
₹ 268,723.67	1 Piece(s)	19 Day(s) or more	10	225	335	5000～Less than 10000	Angular Misalignment / Eccentricity / Axial Misalignment	2001~4000	5000	2	2.3	1.1~3.0	4000	1.2	175.84×10^-3	1 (one side)
₹ 367,072.35	1 Piece(s)	19 Day(s) or more	10	262	391	5000～Less than 10000	Angular Misalignment / Eccentricity / Axial Misalignment	2001~4000	8000	2	2.9	1.1~3.0	3400	1.4	432.03×10^-3	1 (one side)

Basic Information

Type	Type of Flat Springs	Application	Servo Motor	Features	High torsional rigidity / High Torque / High accuracy / High durability / Backlash 0 / Low Inertia Moment / Shaft hole Unfinished
Body Material	Steel	Product Category	Coupling body	Disc Material	Stainless Steel
Operating Temperature Range(°C)	-30::120

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: Is it possible to transmit sufficient torque by using clamp method for fastening to the shaft?: Answer: As our torque transmission tests use an adequate safety coefficient, the fastened part will not slip due to the fastening method at the allowable torque in the catalog. Key grooving of the clamp hub is available; please refer to the key groove modification options as you desired.
Question: Noise and vibration were generated while using the metal sheet spring coupling. What countermeasures are available?: Answer: For servo motors, noise and vibration can be suppressed by setting a mechanical resonance control filter in the control system to the fixed frequency. For stepper motors, shift the operating RPM or absorb/control vibration with a step flex coupling with high damping effects.

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