SFF [DS-CC/CF] ISO Class 6 Cleanroom Version Type_53

This is a simplified cleanroom-compatible product featuring the SFF model of a double-element coupling for servo motor drives used in feed shafts, which has been treated with electroless nickel plating and undergoes cleanroom cleaning, assembly, and packaging.For the grease used on the clamping bolts to ensure axial force, you can choose from two types: fluorinated grease and low-dust grease.

[Specifications] Clamp-fastening type

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 length [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	0.1	1 (one side)	±0.4	14,000	7,500	87	0.04×10⁻³	0.22	-
SFF-050DS-□-□B-□B-16N	16	0.2	1 (per side)	±0.6	14,000	16,000	72.5	0.13×10⁻³	0.46	-
SFF-060DS-□-□B-□B-40N	40	0.2	1 (per side)	±0.6	14,000	52,000	199.5	0.28×10⁻³	0.64	-
SFF-060DS-□-□B-□B-50N	50	0.2	1 (per side)	±0.6	14,000	52,000	199.5	0.29×10⁻³	0.61	-
SFF-070DS-□-□B-□B-65N	65	0.25	1 (one side)	±1.0	14,000	120,000	242	0.53×10⁻³	0.90	-
SFF-080DS-□-□B-□B-120N	120	0.31	1 (one side)	±1.0	13,000	155,000	273	1.50×10⁻³	1.72	-
SFF-090DS-□-□B-□B-150N	150	0.32	1 (per side)	±1.2	12,000	260,000	160.5	2.03×10⁻³	2.02	-
SFF-100DS-□-□B-□B-250N	250	0.38	1 (per side)	±1.3	10,000	370,000	270	4.18×10⁻³	3.12	-

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 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SFFモデルDSタイプ（クリーン仕様）金属板ばねカップリング寸法図外形寸法および主要部寸法を示す寸法図

SFF-DS Dimensions Table

Model	d1	d2	D	L	N1・N2	LF	LP	S	d3	K	M1・M2	Tightening torque [N·m]
Model	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	Quantity-Nominal	CC Low-Dust	CF Fluorine
SFF-040DS-□-□B-□B-8N	8–16	8–16	38	48.8	33	17.5	6	3.9	17	17	2-M4	4.5	4.5
SFF-050DS-□-□B-□B-16N	10–19	10–19	48	60.8	42	21.5	7	5.4	20	20	2-M5	9	8.5
SFF-060DS-□-□B-□B-40N	12–22	12–22	58	65.8	44	24	7	5.4	31	32	2-M6	16	16
	－	24–28	58	65.8	48	24	7	5.4	31	32	2-M5	9	8.5
	－	30	58	65.8	52	24	7	5.4	31	32	2-M5	9	8.5
SFF-060DS-□-□B-□B-50N	24–28	24–28	58	65.8	48	24	7	5.4	31	32	2-M5	9	8.5
SFF-060DS-□-□B-□B-50N	30	30	58	68.5	52	24	7	5.4	31	32	2-M5	9	8.5
SFF-070DS-□-□B-□B-65N	18–19	18–25	68	69.8	47	25	8	5.9	37	38	2-M6	16	16
SFF-070DS-□-□B-□B-65N	－	28–35	68	69.8	56	25	8	5.9	37	38	2-M6	16	16
SFF-080DS-□-□B-□B-120N	28–35	28–35	78	85.4	70	30	10	7.7	40	42	2-M8	37	45
SFF-080DS-□-□B-□B-120N	38	38	78	85.4	74	30	10	7.7	40	42	2-M8	37	45
SFF-090DS-□-□B-□B-150N	35–42	35–42	88	86.6	74	30	10	8.3	50	50	2-M8	37	45
SFF-100DS-□-□B-□B-250N	38–48	38–48	98	112.4	84	40	12	10.2	52	56	2-M10	68	65

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.
Please choose from two types of grease for clamping bolts used to secure axial force: low-dust grease and fluorinated grease.

[Standard Hole Diameter] Clamp-type fastening

SFF-DS Standard Hole Diameter Chart

Model	Standard Hole Diameter d1・d2 [mm]
Model	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
SFF-040DS-□-□B-□B-8N	●	●	●	●	●	●	●	●	●
SFF-050DS-□-□B-□B-16N				●	●	●	●	●	●	●	●	●
SFF-060DS-□-□B-□B-40N						●	●	●	●	●	●	●	●	●	●	●	●	●
SFF-060DS-□-□B-□B-50N															●	●	●	●
SFF-070DS-□-□B-□B-65N											●	●	●	●	●	●	●	●	●	●
SFF-080DS-□-□B-□B-120N																	●	●	●	●	●
SFF-090DS-□-□B-□B-150N																				●	●	●	●
SFF-100DS-□-□B-□B-250N																						●	●	●	●

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