SFM [SS] Type | Miki Pulley

This high-performance model is designed to deliver the high torque, low inertia, and high rotational speeds required for machine tool spindle couplings. In addition to the conventional wedge-locking method, a new clamping method has been added for shaft mounting, significantly expanding the range of options available. Furthermore, it comes standard with a balance correction feature to resolve issues associated with high-speed rotation.

[Specifications] Clamp-fastening type

Model	Rated Torque [N·m]	Permissible error			Maximum rotational speed [min^⁻¹]	Torsional spring constant [N·m/rad]	Axial spring constant [N/mm]	Moment of inertia [kg·m²]	Mass [kg]	Price [JPY]
Model	Rated Torque [N·m]	Eccentricity [mm]	Angular offset [°]	Axial [mm]	Maximum rotational speed [min^⁻¹]	Torsional spring constant [N·m/rad]	Axial spring constant [N/mm]	Moment of inertia [kg·m²]	Mass [kg]	Price [JPY]
SFM-060SS-□B-□B-60N	60	0.02	1	±0.3	24,000	104,000	399	0.22×10⁻³	0.52	-
SFM-060SS-□B-□B-80N	80	0.02	1	±0.3	24,000	104,000	399	0.23×10⁻³	0.49	-
SFM-070SS-□B-□B-90N	90	0.02	1	±0.5	24,000	240,000	484	0.40×10⁻³	0.72	-
SFM-070SS-□B-□B-100N	100	0.02	1	±0.5	24,000	240,000	484	0.42×10⁻³	0.67	-
SFM-080SS-□B-□B-150N	150	0.02	1	±0.5	24,000	120,000	96	0.79×10⁻³	1.04	-
SFM-080SS-□B-□B-200N	200	0.02	1	±0.5	24,000	310,000	546	1.25×10⁻³	1.40	-
SFM-090SS-□B-□B-250N	250	0.02	1	±0.6	24,000	520,000	321	1.54×10⁻³	1.62	-
SFM-090SS-□B-□B-300N	300	0.02	1	±0.6	24,000	520,000	321	1.58×10⁻³	1.53	-
SFM-100SS-□B-□B-450N	450	0.02	1	±0.65	20,000	740,000	540	3.27×10⁻³	2.53	-
SFM-120SS-□B-□B-600N	600	0.02	1	±0.8	20,000	970,000	360	6.90×10⁻³	3.78	-

The torsional spring constant value refers to the value for a single element.
The moment of inertia and mass are based on the maximum bore diameter.

[Dimensions] Clamp-type

三木プーリのサーボフレックスシリーズSFMモデルSSタイプ（クランプ締結仕様）金属板ばねカップリング寸法図取付寸法および軸径寸法を示す寸法図

Unit [mm]

Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1･N2[mm]	LF[mm]	S[mm]	K[mm]	M1・M2 Quantity - Nominal	M1/M2 Tightening Torque [N·m]
Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1･N2[mm]	LF[mm]	S[mm]	K[mm]	M1・M2 Quantity - Nominal	M1/M2 Tightening Torque [N·m]
SFM-060SS-□B-□B-60N	12, 14, 15, 16, 17, 18, 19	12, 14, 15, 16, 17, 18, 19, 20, 22	58	53.4	44	24	5.4	32	2-M6	14
	-	24, 25, 28	58	53.4	48	24	5.4	32	2-M5	7
	-	30	58	53.4	52	24	5.4	32	2-M5	7
SFM-060SS-□B-□B-80N	20･22	20･22	58	53.4	44	24	5.4	32	2-M6	14
	24, 25, 28	24, 25, 28	58	53.4	48	24	5.4	32	2-M5	7
	30	30	58	53.4	52	24	5.4	32	2-M5	7
SFM-070SS-□B-□B-90N	18･19	18, 19, 20, 22, 24, 25	68	55.9	47	25	5.9	38	2-M6	14
SFM-070SS-□B-□B-90N	-	28, 30, 32, 35	68	55.9	56	25	5.9	38	2-M6	14
SFM-070SS-□B-□B-100N	20, 22, 24, 25	20, 22, 24, 25	68	55.9	47	25	5.9	38	2-M6	14
SFM-070SS-□B-□B-100N	28, 30, 32, 35	28, 30, 32, 35	68	55.9	56	25	5.9	38	2-M6	14
SFM-080SS-□B-□B-150N	22, 24, 25	22, 24, 25	78	68.3	53	30	8.3	37	2-M8	34
SFM-080SS-□B-□B-150N	28, 30, 32, 35	28, 30, 32, 35	78	68.3	56	30	8.3	37	2-M6	14
SFM-080SS-□B-□B-200N	22, 24, 25	22, 24, 25	78	67.7	53	30	7.7	42	2-M8	34
	28, 30, 32, 35	28, 30, 32, 35	78	67.7	70	30	7.7	42	2-M8	34
	38	38	78	67.7	74	30	7.7	42	2-M8	34
SFM-090SS-□B-□B-250N	25･28	25, 28, 30, 32	88	68.3	66	30	8.3	50	2-M8	34
SFM-090SS-□B-□B-250N	-	35, 38, 40, 42	88	68.3	74	30	8.3	50	2-M8	34
SFM-090SS-□B-□B-300N	30･32	30･32	88	68.3	66	30	8.3	50	2-M8	34
SFM-090SS-□B-□B-300N	35, 38, 40, 42	35, 38, 40, 42	88	68.3	74	30	8.3	50	2-M8	34
SFM-100SS-□B-□B-450N	32, 35, 38, 40, 42, 45, 48	32, 35, 38, 40, 42, 45, 48	98	90.2	84	40	10.2	56	2-M10	68
SFM-120SS-□B-□B-600N	32, 35, 38, 40, 42, 45	32, 35, 38, 40, 42, 45	118	90.2	84	40	10.2	68	2-M10	68
SFM-120SS-□B-□B-600N	48, 50, 55	48, 50, 55	118	90.2	100	40	10.2	68	2-M10	68

The designation for M1 and M2 clamp bolts consists of the quantity followed by the thread size; the quantity refers to the number of bolts on one side of the hub.

[Standard Hole Diameter] Clamp-type fastening

Model	Standard Hole Diameter d1, d2 [mm]
Model	Nominal	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55
SFM-060SS-□B-□B-60N	d1	●	●	●	●	●	●	●
SFM-060SS-□B-□B-60N	d2	●	●	●	●	●	●	●	●	●	●	●	●	●
SFM-060SS-□B-□B-80N	d1								●	●	●	●	●	●
SFM-060SS-□B-□B-80N	d2								●	●	●	●	●	●
SFM-070SS-□B-□B-90N	d1						●	●
SFM-070SS-□B-□B-90N	d2						●	●	●	●	●	●	●	●	●	●
SFM-070SS-□B-□B-100N	d1								●	●	●	●	●	●	●	●
SFM-070SS-□B-□B-100N	d2								●	●	●	●	●	●	●	●
SFM-080SS-□B-□B-150N	d1									●	●	●	●	●	●	●
SFM-080SS-□B-□B-150N	d2									●	●	●	●	●	●	●
SFM-080SS-□B-□B-200N	d1									●	●	●	●	●	●	●	●
SFM-080SS-□B-□B-200N	d2									●	●	●	●	●	●	●	●
SFM-090SS-□B-□B-250N	d1											●	●
SFM-090SS-□B-□B-250N	d2											●	●	●	●	●	●	●	●
SFM-090SS-□B-□B-300N	d1													●	●	●	●	●	●
SFM-090SS-□B-□B-300N	d2													●	●	●	●	●	●
SFM-100SS-□B-□B-450N	d1														●	●	●	●	●	●	●
SFM-100SS-□B-□B-450N	d2														●	●	●	●	●	●	●
SFM-120SS-□B-□B-600N	d1														●	●	●	●	●	●	●	●	●
SFM-120SS-□B-□B-600N	d2														●	●	●	●	●	●	●	●	●

The hole diameters in the fields marked with a ● are the standard hole diameters.

[Balance Adjustment] Clamp-type fastening

Model (Size)	Supported Rotational Speed [rpm]
Model (Size)	10,000 or less	15,000 or less	18,000 or less	20,000 or less	24,000 or less
SFM-060SS	●	●	●	●	●
SFM-070SS	●	●	●	●	●
SFM-080SS	●	●	●	●	●
SFM-090SS	●	●	●	●	●
SFM-100SS	●	●	●	●
SFM-120SS	●	●	●	●

We will correct the balance at the rotational speed indicated in the field marked with a ●.

三木プーリのサーボフレックスシリーズSFMモデル SSタイプ（クランプ締結仕様）金属板ばねカップリングご注文時の型式構成説明図

[Specifications] Wedge-type fastening

Model	Rated Torque [N·m]	Permissible error			Maximum rotational speed [min^⁻¹]	Torsional spring constant [N·m/rad]	Axial spring constant [N/mm]	Moment of inertia [kg·m²]	Mass [kg]	Price [JPY]
Model	Rated Torque [N·m]	Eccentricity [mm]	Angular offset [°]	Axial [mm]	Maximum rotational speed [min^⁻¹]	Torsional spring constant [N·m/rad]	Axial spring constant [N/mm]	Moment of inertia [kg·m²]	Mass [kg]	Price [JPY]
SFM-070SS-□K-□K-100N	100	0.02	1	±0.5	24,000	240,000	484	0.66×10⁻³	0.92	-
SFM-080SS-□K-□K-150N	150	0.02	1	±0.5	24,000	120,000	96	1.21×10⁻³	1.03	-
SFM-080SS-□K-□K-200N	200	0.02	1	±0.5	24,000	310,000	546	1.11×10⁻³	1.26	-
SFM-090SS-□K-□K-300N	300	0.02	1	±0.6	24,000	520,000	321	1.75×10⁻³	1.48	-
SFM-100SS-□K-□K-450N	450	0.02	1	±0.65	20,000	740,000	540	2.56×10⁻³	1.87	-
SFM-120SS-□K-□K-600N	600	0.02	1	±0.8	20,000	970,000	360	5.33×10⁻³	2.50	-
SFM-140SS-□K-□K-800N	800	0.02	1	±1.0	20,000	1,400,000	360	10.28×10⁻³	4.66	-
SFM-140SS-□K-□K-1000N	1000	0.02	1	±1.0	20000	1,400,000	360	14.70×10⁻³	5.01	-

The torsional spring constant value refers to the value for a single element.
The moment of inertia and mass are based on the maximum bore diameter.

[Dimensions] Wedge-type fastening

三木プーリのサーボフレックスシリーズSFMモデルSSタイプ（くさび締結仕様）金属板ばねカップリング寸法図取付寸法および軸径寸法を示す寸法図

Unit [mm]

Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1･N2[mm]	LF[mm]	S[mm]	C[mm]	K [mm]	H [mm]	M1 Quantity - Nominal	M1 Tightening Torque [N·m]	M2 Quantity - Nominal
Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1･N2[mm]	LF[mm]	S[mm]	C[mm]	K [mm]	H [mm]	M1 Quantity - Nominal	M1 Tightening Torque [N·m]	M2 Quantity - Nominal
SFM-070SS-□K-□K-100N	18･19	18/19	68	62.9	53	23.5	5.9	5	38	3-5.1	6-M6	10	3-M6
	20, 22, 24, 25	20, 22, 24, 25	68	62.9	58	23.5	5.9	5	38	3-5.1	6-M6	10	3-M6
	28 and 30	28/30	68	62.9	63	23.5	5.9	5	38	3-5.1	6-M6	10	3-M6
	32･35	32·35	68	62.9	68	23.5	5.9	5	38	3-5.1	6-M6	10	3-M6
SFM-080SS-□K-□K-150N	22, 24, 25	22, 24, 25	78	69.3	58	25.5	8.3	5	37	4–5.1	4-M6	10	2-M6
	28 and 30	28, 30	78	69.3	63	25.5	8.3	5	37	4–5.1	4-M6	10	2-M6
	32･35	32･35	78	69.3	68	25.5	8.3	5	37	4–5.1	4-M6	10	2-M6
	-	38	78	69.3	73	25.5	8.3	5	37	4–5.1	4-M6	10	2-M6
SFM-080SS-□K-□K-200N	22, 24, 25	22, 24, 25	78	68.7	58	25.5	7.7	5	42	3-5.1	6-M6	10	3-M6
	28 and 30	28 and 30	78	68.7	63	25.5	7.7	5	42	3-5.1	6-M6	10	3-M6
	32･35	32·35	78	68.7	68	25.5	7.7	5	42	3-5.1	6-M6	10	3-M6
	38	38	78	68.7	73	25.5	7.7	5	42	3-5.1	6-M6	10	3-M6
SFM-090SS-□K-□K-300N	28･30	28･30	88	69.3	63	25.5	8.3	5	50	3–6.8	6-M6	10	3-M6
	32･35	32·35	88	69.3	68	25.5	8.3	5	50	3–6.8	6-M6	10	3-M6
	38, 40, 42	38, 40, 42	88	69.3	73	25.5	8.3	5	50	3–6.8	6-M6	10	3-M6
	45	45	88	69.3	78	25.5	8.3	5	50	3–6.8	6-M6	10	3-M6
	48	48	88	69.3	83	25.5	8.3	5	50	3–6.8	6-M6	10	3-M6
SFM-100SS-□K-□K-450N	32･35	32･35	98	75.2	68	27.5	10.2	5	56	3–6.8	6-M6	10	3-M6
	38, 40, 42	38, 40, 42	98	75.2	73	27.5	10.2	5	56	3–6.8	6-M6	10	3-M6
	45	45	98	75.2	78	27.5	10.2	5	56	3–6.8	6-M6	10	3-M6
	48/50	48/50	98	75.2	83	27.5	10.2	5	56	3–6.8	6-M6	10	3-M6
SFM-120SS-□K-□K-600N	35	35	118	75.2	68	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
	38, 40, 42	38, 40, 42	118	75.2	73	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
	45	45	118	75.2	78	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
	48, 50, 52	48, 50, 52	118	75.2	83	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
	55	55	118	75.2	88	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
	60, 62, 65	60, 62, 65	118	75.2	98	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
	-	70	118	75.2	108	27.5	10.2	5	68	3–6.8	6-M6	10	3-M6
SFM-140SS-□K-□K-800N	35･38	35･38	138	94.6	83	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	40, 42, 45	40, 42, 45	138	94.6	88	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	-	48, 50, 52	138	94.6	98	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	-	55/60	138	94.6	108	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	-	62, 65, 70	138	94.6	118	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	-	75/80	138	94.6	128	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
SFM-140SS-□K-□K-1000N	48, 50, 52	48, 50, 52	138	94.6	98	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	55/60	55/60	138	94.6	108	36.5	10.6	5.5	78	3–8.6	6-M8	24	3-M8
	62, 65, 70	62, 65, 70	138	94.6	118	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8
	75	75/80	138	94.6	128	36.5	10.6	5.5	78	3–8.6	6–M8	24	3-M8

The designation for the M1 clamping bolt and the M2 removal screw hole is based on the quantity and thread size. Additionally, the quantities listed for H, M1, and M2 refer to the number on one side of the hub.

[Standard Hole Diameter] Wedge-type fastening

Model	Standard Hole Diameter d1, d2 [mm]
Model	Nominal	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	52	55	60	62	65	70	75	80
SFM-070SS-□K-□K-100N	d1	●	●	●	●	●	●	●	●	●	●
SFM-070SS-□K-□K-100N	d2	●	●	●	●	●	●	●	●	●	●
SFM-080SS-□K-□K-150N	d1				●	●	●	●	●	●	●
SFM-080SS-□K-□K-150N	d2				●	●	●	●	●	●	●	●
SFM-080SS-□K-□K-200N	d1				●	●	●	●	●	●	●	●
SFM-080SS-□K-□K-200N	d2				●	●	●	●	●	●	●	●
SFM-090SS-□K-□K-300N	d1							●	●	●	●	●	●	●	●	●
SFM-090SS-□K-□K-300N	d2							●	●	●	●	●	●	●	●	●
SFM-100SS-□K-□K-450N	d1									●	●	●	●	●	●	●	●
SFM-100SS-□K-□K-450N	d2									●	●	●	●	●	●	●	●
SFM-120SS-□K-□K-600N	d1										●	●	●	●	●	●	●	●	●	●	●	●
SFM-120SS-□K-□K-600N	d2										●	●	●	●	●	●	●	●	●	●	●	●	●
SFM-140SS-□K-□K-800N	d1										●	●	●	●	●
SFM-140SS-□K-□K-800N	d2										●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFM-140SS-□K-□K-1000N	d1															●	●	●	●	●	●	●	●	●
SFM-140SS-□K-□K-1000N	d2															●	●	●	●	●	●	●	●	●	●

The hole diameters in the fields marked with a ● are the standard hole diameters.

[Balance Adjustment] Wedge-type fastening

Model (Size)	Supported Rotational Speed [rpm]
Model (Size)	10,000 or less	15,000 or less	18,000 or less	20,000 or less	24,000 or less
SFM-070SS	●	●	●	●	●
SFM-080SS	●	●	●	●	●
SFM-090SS	●	●	●	●	●
SFM-100SS	●	●	●	●
SFM-120SS	●	●	●	●
SFM-140SS	●	●	●	●

We will correct the balance at the rotational speed indicated in the field marked with a ●.

三木プーリのサーボフレックスシリーズSFMモデル SSタイプ（くさび締結仕様）金属板ばねカップリングご注文時の型式構成説明図