Product Selection Navigator

SFF [DS] Type

三木プーリのサーボフレックスSFFモデル SFF-DSタイプ金属板ばねカップリング製品画像（クランプ締結・軸ずれ補正・高精度トルク伝達・サーボ用高精度軸継手）

Members Only 3D CAD Download (Clamp Fastening)

Members Only 3D CAD Download (Wedge Fastening)

Based on the specifications and dimensions of servo motors used for drive shafts—including permissible torque and compatible shaft diameters—we configure our products to provide the best match for the latest servo motors from various manufacturers. Our lineup includes models featuring a clamp-type design for easy assembly and a wedge-type design for high reliability. The permissible torque significantly exceeds that of conventional products. This is a flexible double-element type.

[Specifications]

Model	Rated torque [N·m]	Tolerance			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]
SFF-040DS-□B-□B-8N	8	0.10	1 (one side)	±0.4	14,000	7,500	87	0.04×10⁻³	0.22	21,600
SFF-040DS-□B-□B-12N	12	0.10	1 (per side)	±0.4	14,000	7,500	87	0.04×10⁻³	0.22	21,600
SFF-050DS-□B-□B-25N	25	0.20	1 (per side)	±0.6	14,000	16,000	72.5	0.13×10⁻³	0.46	25,410
SFF-060DS-□B-□B-60N	60	0.20	1 (per side)	±0.6	14,000	52,000	199.5	0.28×10⁻³	0.64	29,230
SFF-060DS-□B-□B-80N	80	0.20	1 (per side)	±0.6	14,000	52,000	199.5	0.29×10⁻³	0.61	29,230
SFF-070DS-□B-□B-90N	90	0.25	1 (per side)	±1.0	14,000	120,000	242	0.53×10⁻³	0.90	34,190
SFF-070DS-□B-□B-100N	100	0.25	1 (per side)	±1.0	14,000	120,000	242	0.55×10⁻³	0.85	34,190
SFF-080DS-□B-□B-150N	150	0.32	1 (per side)	±1.0	13,000	60,000	48	1.10×10⁻³	1.37	37,990
SFF-080DS-□B-□B-200N	200	0.31	1 (per side)	±1.0	13,000	155,000	273	1.50×10⁻³	1.72	42,690
SFF-090DS-□B-□B-250N	250	0.32	1 (per side)	±1.2	12,000	260,000	160.5	2.03×10⁻³	2.02	47,400
SFF-090DS-□B-□B-300N	300	0.32	1 (per side)	±1.2	12,000	260,000	160.5	2.10×10⁻³	1.92	47,400
SFF-100DS-□B-□B-450N	450	0.38	1 (per side)	±1.3	10,000	370,000	270	4.18×10⁻³	3.12	52,730
SFF-120DS-□B-□B-600N	600	0.38	1 (per side)	±1.6	9000	485,000	180	8.87×10⁻³	4.60	58,830

The maximum rotational speed does not take dynamic balance into account.
The torsional spring constant value refers to the value for a single element.
The moment of inertia and mass are given for the maximum bore diameter.

[Dimensions]

三木プーリのサーボフレックスシリーズSFFモデルDS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

Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1 and N2 [mm]	LF [mm]	LP [mm]	S [mm]	d3 [mm]	K [mm]
Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1 and N2 [mm]	LF [mm]	LP [mm]	S [mm]	d3 [mm]	K [mm]
SFF-040DS-□B-□B-8N	8, 9, 9.525	8, 9, 9.525, 10, 11, 12, 14, 15, 16	38	48.8	33	17.5	6	3.9	17	17
SFF-040DS-□B-□B-12N	10, 11, 12, 14, 15, 16	10, 11, 12, 14, 15, 16	38	48.8	33	17.5	6	3.9	17	17
SFF-050DS-□B-□B-25N	10, 11, 12, 14, 15, 16, 17, 18, 19	10, 11, 12, 14, 15, 16, 17, 18, 19	48	60.8	42	21.5	7	5.4	20	20
SFF-060DS-□B-□B-60N	12, 14, 15, 16, 17, 18, 19	12, 14, 15, 16, 17, 18, 19, 20, 22	58	65.8	44	24	7	5.4	31	32
	-	24, 25, 28	58	65.8	48	24	7	5.4	31	32
	-	30	58	65.8	52	24	7	5.4	31	32
SFF-060DS-□B-□B-80N	20･22	20･22	58	65.8	44	24	7	5.4	31	32
	24, 25, 28	24, 25, 28	58	65.8	48	24	7	5.4	31	32
	30	30	58	65.8	52	24	7	5.4	31	32
SFF-070DS-□B-□B-90N	18･19	18, 19, 20, 22, 24, 25	68	69.8	47	25	8	5.9	37	38
SFF-070DS-□B-□B-90N	-	28, 30, 32, 35	68	69.8	56	25	8	5.9	37	38
SFF-070DS-□B-□B-100N	20, 22, 24, 25	20, 22, 24, 25	68	69.8	47	25	8	5.9	37	38
SFF-070DS-□B-□B-100N	28, 30, 32, 35	28, 30, 32, 35	68	69.8	56	25	8	5.9	37	38
SFF-080DS-□B-□B-150N	22, 24, 25	22, 24, 25	78	86.6	53	30	10	8.3	40	37
SFF-080DS-□B-□B-150N	28, 30, 32, 35	28, 30, 32, 35	78	86.6	56	30	10	8.3	40	37
SFF-080DS-□B-□B-200N	22, 24, 25	22, 24, 25	78	85.4	53	30	10	7.7	40	42
	28, 30, 32, 35	28, 30, 32, 35	78	85.4	70	30	10	7.7	40	42
	38	38	78	85.4	74	30	10	7.7	40	42
SFF-090DS-□B-□B-250N	25･28	25, 28, 30, 32	88	86.6	66	30	10	8.3	50	50
SFF-090DS-□B-□B-250N	-	35, 38, 40, 42	88	86.6	74	30	10	8.3	50	50
SFF-090DS-□B-□B-300N	30･32	30･32	88	86.6	66	30	10	8.3	50	50
SFF-090DS-□B-□B-300N	35, 38, 40, 42	35, 38, 40, 42	88	86.6	74	30	10	8.3	50	50
SFF-100DS-□B-□B-450N	32, 35, 38, 40, 42, 45, 48	32, 35, 38, 40, 42, 45, 48	98	112.4	84	40	12	10.2	52	56
SFF-120DS-□B-□B-600N	32, 35, 38, 40, 42, 45	32, 35, 38, 40, 42, 45	118	112.4	84	40	12	10.2	72	68
SFF-120DS-□B-□B-600N	48, 50, 55	48, 50, 55	118	112.4	100	40	12	10.2	72	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]

Model	Standard hole diameter d1, d2 [mm]
Model	Nominal	8	9	9.525	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55
SFF-040DS-□B-□B-8N	d1	●	●	●
SFF-040DS-□B-□B-8N	d2	●	●	●	●	●	●	●	●	●
SFF-040DS-□B-□B-12N	d1				●	●	●	●	●	●
SFF-040DS-□B-□B-12N	d2				●	●	●	●	●	●
SFF-050DS-□B-□B-25N	d1				●	●	●	●	●	●	●	●	●
SFF-050DS-□B-□B-25N	d2				●	●	●	●	●	●	●	●	●
SFF-060DS-□B-□B-60N	d1						●	●	●	●	●	●	●
SFF-060DS-□B-□B-60N	d2						●	●	●	●	●	●	●	●	●	●	●	●	●
SFF-060DS-□B-□B-80N	d1													●	●	●	●	●	●
SFF-060DS-□B-□B-80N	d2													●	●	●	●	●	●
SFF-070DS-□B-□B-90N	d1											●	●
SFF-070DS-□B-□B-90N	d2											●	●	●	●	●	●	●	●	●	●
SFF-070DS-□B-□B-100N	d1													●	●	●	●	●	●	●	●
SFF-070DS-□B-□B-100N	d2													●	●	●	●	●	●	●	●
SFF-080DS-□B-□B-150N	d1														●	●	●	●	●	●	●
SFF-080DS-□B-□B-150N	d2														●	●	●	●	●	●	●
SFF-080DS-□B-□B-200N	d1														●	●	●	●	●	●	●	●
SFF-080DS-□B-□B-200N	d2														●	●	●	●	●	●	●	●
SFF-090DS-□B-□B-250N	d1																●	●
SFF-090DS-□B-□B-250N	d2																●	●	●	●	●	●	●	●
SFF-090DS-□B-□B-300N	d1																		●	●	●	●	●	●
SFF-090DS-□B-□B-300N	d2																		●	●	●	●	●	●
SFF-100DS-□B-□B-450N	d1																			●	●	●	●	●	●	●
SFF-100DS-□B-□B-450N	d2																			●	●	●	●	●	●	●
SFF-120DS-□B-□B-600N	d1																			●	●	●	●	●	●	●	●	●
SFF-120DS-□B-□B-600N	d2																			●	●	●	●	●	●	●	●	●

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

三木プーリのサーボフレックスシリーズSFFモデル DS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]	Tolerance			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]
SFF-070DS-□K-□K-100N	100	0.25	1 (per side)	±1.0	14,000	120,000	242	0.80×10⁻³	1.10	42,760
SFF-080DS-□K-□K-150N	150	0.32	1 (per side)	±1.0	13,000	60,000	48	1.36×10⁻³	1.56	47,520
SFF-080DS-□K-□K-200N	200	0.31	1 (per side)	±1.0	13,000	155,000	273	1.42×10⁻³	1.60	50,460
SFF-090DS-□K-□K-300N	300	0.32	1 (per side)	±1.2	12,000	260,000	160.5	2.24×10⁻³	1.87	53,380
SFF-100DS-□K-□K-450N	450	0.38	1 (per side)	±1.3	10,000	370,000	270	3.51×10⁻³	2.49	59,260
SFF-120DS-□K-□K-600N	600	0.38	1 (per side)	±1.6	9000	485,000	180	7.17×10⁻³	3.29	79,660
SFF-140DS-□K-□K-800N	800	0.44	1 (per side)	±2.0	8000	700,000	180	14.68×10⁻³	6.05	102,590
SFF-140DS-□K-□K-1000N	1000	0.44	1 (per side)	±2.0	8000	700,000	180	19.11×10⁻³	6.39	102,590

The maximum rotational speed does not take dynamic balance into account.
The torsional spring constant value refers to the value for a single element.
The moment of inertia and mass are given for 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SFFモデルDS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

Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1 and N2 [mm]	LF [mm]	LP [mm]	S [mm]	C [mm]	d3 [mm]	K [mm]	H [mm]	M1 Quantity - Nominal
Model	d1 [mm]	d2 [mm]	D [mm]	L [mm]	N1 and N2 [mm]	LF [mm]	LP [mm]	S [mm]	C [mm]	d3 [mm]	K [mm]	H [mm]	M1 Quantity - Nominal
SFF-070DS-□K-□K-100N	18･19	18･19	68	76.8	53	23.5	8	5.9	5	37	38	3-5.1	6-M6
	20, 22, 24, 25	20, 22, 24, 25	68	76.8	58	23.5	8	5.9	5	37	38	3-5.1	6-M6
	28･30	28 and 30	68	76.8	63	23.5	8	5.9	5	37	38	3-5.1	6-M6
	32･35	32 and 35	68	76.8	68	23.5	8	5.9	5	37	38	3-5.1	6-M6
SFF-080DS-□K-□K-150N	22, 24, 25	22, 24, 25	78	87.6	58	25.5	10	8.3	5	40	37	4-5.1	4-M6
	28･30	28 and 30	78	87.6	63	25.5	10	8.3	5	40	37	4-5.1	4-M6
	32･35	32 and 35	78	87.6	68	25.5	10	8.3	5	40	37	4-5.1	4-M6
	-	38	78	87.6	73	25.5	10	8.3	5	40	37	4-5.1	4-M6
SFF-080DS-□K-□K-200N	22, 24, 25	22, 24, 25	78	86.4	58	25.5	10	7.7	5	40	42	3-5.1	6-M6
	28 and 30	28 and 30	78	86.4	63	25.5	10	7.7	5	40	42	3-5.1	6-M6
	32･35	32 and 35	78	86.4	68	25.5	10	7.7	5	40	42	3-5.1	6-M6
	38	38	78	86.4	73	25.5	10	7.7	5	40	42	3-5.1	6-M6
SFF-090DS-□K-□K-300N	28･30	28/30	88	87.6	63	25.5	10	8.3	5	50	50	3–6.8	6–M6
	32･35	32/35	88	87.6	68	25.5	10	8.3	5	50	50	3–6.8	6-M6
	38, 40, 42	38, 40, 42	88	87.6	73	25.5	10	8.3	5	50	50	3–6.8	6–M6
	45	45	88	87.6	78	25.5	10	8.3	5	50	50	3–6.8	6–M6
	48	48	88	87.6	83	25.5	10	8.3	5	50	50	3–6.8	6-M6
SFF-100DS-□K-□K-450N	32･35	32･35	98	97.4	68	27.5	12	10.2	5	52	56	3–6.8	6–M6
	38, 40, 42	38, 40, 42	98	97.4	73	27.5	12	10.2	5	52	56	3–6.8	6–M6
	45	45	98	97.4	78	27.5	12	10.2	5	52	56	3–6.8	6–M6
	48/50	48/50	98	97.4	83	27.5	12	10.2	5	52	56	3–6.8	6-M6
SFF-120DS-□K-□K-600N	35	35	118	97.4	68	27.5	12	10.2	5	72	68	3–6.8	6-M6
	38, 40, 42	38, 40, 42	118	97.4	73	27.5	12	10.2	5	72	68	3–6.8	6–M6
	45	45	118	97.4	78	27.5	12	10.2	5	72	68	3–6.8	6-M6
	48, 50, 52	48, 50, 52	118	97.4	83	27.5	12	10.2	5	72	68	3–6.8	6–M6
	55	55	118	97.4	88	27.5	12	10.2	5	72	68	3–6.8	6–M6
	60, 62, 65	60, 62, 65	118	97.4	98	27.5	12	10.2	5	72	68	3–6.8	6–M6
	-	70	118	97.4	108	27.5	12	10.2	5	72	68	3–6.8	6-M6
SFF-140DS-□K-□K-800N	35･38	35･38	138	120	83	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	40, 42, 45	40, 42, 45	138	120	88	36.5	15	10.6	5.5	80	78	3–8.6	6-M8
	-	48, 50, 52	138	120	98	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	-	55–60	138	120	108	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	-	62, 65, 70	138	120	118	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	-	75–80	138	120	128	36.5	15	10.6	5.5	80	78	3–8.6	6-M8
SFF-140DS-□K-□K-1000N	48, 50, 52	48, 50, 52	138	120	98	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	55–60	55/60	138	120	108	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	62, 65, 70	62, 65, 70	138	120	118	36.5	15	10.6	5.5	80	78	3–8.6	6–M8
	75	75–80	138	120	128	36.5	15	10.6	5.5	80	78	3–8.6	6–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]

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
SFF-070DS-□K-□K-100N	d1	●	●	●	●	●	●	●	●	●	●
SFF-070DS-□K-□K-100N	d2	●	●	●	●	●	●	●	●	●	●
SFF-080DS-□K-□K-150N	d1				●	●	●	●	●	●	●
SFF-080DS-□K-□K-150N	d2				●	●	●	●	●	●	●	●
SFF-080DS-□K-□K-200N	d1				●	●	●	●	●	●	●	●
SFF-080DS-□K-□K-200N	d2				●	●	●	●	●	●	●	●
SFF-090DS-□K-□K-300N	d1							●	●	●	●	●	●	●	●	●
SFF-090DS-□K-□K-300N	d2							●	●	●	●	●	●	●	●	●
SFF-100DS-□K-□K-450N	d1									●	●	●	●	●	●	●	●
SFF-100DS-□K-□K-450N	d2									●	●	●	●	●	●	●	●
SFF-120DS-□K-□K-600N	d1										●	●	●	●	●	●	●	●	●	●	●	●
SFF-120DS-□K-□K-600N	d2										●	●	●	●	●	●	●	●	●	●	●	●	●
SFF-140DS-□K-□K-800N	d1										●	●	●	●	●
SFF-140DS-□K-□K-800N	d2										●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFF-140DS-□K-□K-1000N	d1															●	●	●	●	●	●	●	●	●
SFF-140DS-□K-□K-1000N	d2															●	●	●	●	●	●	●	●	●	●

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

三木プーリのサーボフレックスシリーズSFFモデル DS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