SFC [SA2] CC/CF—Clean Room Compatible Type

This is a simplified clean room compatible solution that involves clean room cleaning, assembly, and clean room packaging for the single version. The basic design is the same as the standard model, with modifications to the main unit’s surface treatment and the use of stainless steel bolts. For the clamping bolts used to secure axial force, you can choose between two types of grease: fluorinated grease and low particle generation grease.

specifications

models	Shape TYPE	Permissible (operating) torque [N·m]	Permissible Tolerance			Max. rotation speed [^min⁻¹]	Torsional stiffness [N·m/rad]	Axial stiffness [N/mm]	Moment of inertia [kg·m²]	Mass [kg]
models	Shape TYPE	Permissible (operating) torque [N·m]	Eccentricity [mm]	Angular Misalignment [°]	In the axial direction [mm]	Max. rotation speed [^min⁻¹]	Torsional stiffness [N·m/rad]	Axial stiffness [N/mm]	Moment of inertia [kg·m²]	Mass [kg]
SFC-020SA2	C	2	0.02	1	±0.15	10,000	3,700	64	2.39×10−6	0.025
SFC-025SA2	C	4	0.02	1	±0.19	10,000	5,600	60	3.67×10−6	0.029
SFC-030SA2	A	5	0.02	1	±0.2	10,000	8,000	64	4.09×10−6	0.034
	B								6.11×10⁻⁶	0.040
	C								8.23×10⁻⁶	0.048
SFC-035SA2	C	10	0.02	1	±0.25	10,000	18,000	112	18.50 × 10⁻⁶	0.083
SFC-040SA2	A	12	0.02	1	±0.3	10,000	20,000	80	16.71×10−6	0.077
	B								22.59×10⁻⁶	0.085
	C								29.28×10⁻⁶	0.100
SFC-050SA2	A	25	0.02	1	±0.4	10,000	32,000	48	56.26×10⁻⁶	0.160
	B								76.71×10⁻⁶	0.178
	C								99.38 × 10⁻⁶	0.207
SFC-055SA2	C	40	0.02	1	±0.42	10,000	50,000	43	188.7×10⁻⁶	0.315
SFC-060SA2	A	60	0.02	1	±0.45	10,000	70,000	76.4	147.0 × 10⁻⁶	0.285
	B								206.3 × 10⁻⁶	0.328
	C								270.0 × 10⁻⁶	0.387
SFC-080SA2	C	100	0.02	1	±0.55	10,000	140,000	128	716.3×10⁻⁶	0.720

The shape TYPE (A, B, or C) is automatically determined based on the combination of bore sizes you select, so you cannot specify it.
The permissible (operating) torque may be limited by the holding power of the shaft fastening section, so please check the “standard bore size.”
The max. rotation speed does not take dynamic balance into account.
The torsional stiffness values are based solely on measurements taken from the element section.
The moment of inertia and mass are the values corresponding to the maximum bore size.

Dimensions

三木プーリのサーボフレックスSFCモデル SFC-SA2-CCタイプ／SFC-SA2-CFタイプ金属板ばねカップリング寸法図（クリーン仕様・サーボモータ用高精度軸継手）

Unit [mm]
models	Shape TYPE	d1		d2		D	N	L	LF	S	A1	A2	C	K	M	Tightening Torque [N·m]
models	Shape TYPE	Minimum	Maximum	Minimum	Max	D	N	L	LF	S	A1	A2	C	K	M	CC Low particle generation	CF Fluorine
SFC-020SA2	C	5	10	5	11	26	－	23.15	10.75	1.65	－	9.5	3.3	10.6	1-M2.5	0.5	0.9
SFC-025SA2	C	5	14	5	14	29	－	23.4	10.75	1.9	－	11	3.3	14.5	1-M2.5	0.5	0.9
SFC-030SA2	A	5	10	5	10	34	21.6	27.3	12.4	2.5	8	─	3.75	14.5	1-M3	1.5	3.2
	B	5	10	Over 10	16						8	12.5
	C	Over 10	14	Over 10	16						─	12.5
SFC-035SA2	C	6	16	6	19	39	－	34	15.5	3	－	14	4.5	17	1-M4	4	7.7
SFC-040SA2	A	8	15	8	15	44	29.6	34	15.5	3	11	─	4.5	19.5	1-M4	4	7.7
	B	8	15	Over 15	24						11	17
	C	Over 15	19	Exceeding 15	24						─	17
SFC-050SA2	A	8	19	8	19	56	38	43.4	20.5	2.4	14.5	─	6	26	1-M5	7	12
	B										14.5	22
	C										─	22
SFC-055SA2	C	10	30	10	30	63	－	50.6	24	2.6	－	23	7.75	31	1-M6	13	22.5
SFC-060SA2	A	11	24	11	24	68	46	53.6	25.2	3.2	17.5	─	7.75	31	1-M6	13	22.5
	B	11	24	Over 24	35						17.5	26.5
	C	Over 24	30	Over 24	35						─	26.5
SFC-080SA2	C	18	35	18	40	82	－	68	30	8	－	28	9	38	1-M8	27	45

The shape TYPE (A, B, or C) is automatically determined based on the combination of bore sizes you select, so you cannot specify it.
Dimension K is the inner diameter of the element. If the d2 dimension exceeds this value, the shaft cannot be inserted into the hub on the d2 side up to dimension LF.
The nominal size for Clamping Bolt M is the quantity followed by the thread size; the quantity refers to the number of hubs on one side.
For the grease used on clamping bolts to ensure axial force, please choose from one of two types: grease with low particle generation or fluorinated grease.

Standard Bore Size (Low particle generation specifications)

models	Standard (Optional) Bore Sizes d1 and d2 [mm] and Permissible Torque [N·m]
models	d1･d2	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40
SFC-020SA2	d1	0.5	0.6	0.6	0.6	1	1.3	1.3	●
SFC-020SA2	d2	0.5	0.6	0.6	0.6	1	1.3	1.3	●	●
SFC-025SA2	d1	0.5	0.5	0.5	0.5	0.8	0.8	0.8	1.8	1.8	2.3	2.3	●
SFC-025SA2	d2	0.5	0.5	0.5	0.5	0.8	0.8	0.8	1.8	1.8	2.3	2.3	●
SFC-030SA2	d1	0.8	1.6	2	2.6	3.4	4.4	4.9	●	●	●	●	●
SFC-030SA2	d2	0.8	1.6	2	2.6	3.4	4.4	4.9	●	●	●	●	●	●	●
SFC-035SA2	d1		3.3	3.8	4.8	6.3	7.7	8.5	9.2	●	●	●	●	●	●
SFC-035SA2	d2		3.3	3.8	4.8	6.3	7.7	8.5	9.2	●	●	●	●	●	●	●	●	●
SFC-040SA2	d1					9	9	9	9	9	●	●	●	●	●	●	●	●
SFC-040SA2	d2					9	9	9	9	9	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d1					11	16	17	19	19	24	24	24	●	●	●	●	●	●	●	●	●
SFC-050SA2	d2					11	16	17	19	19	24	24	24	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d1								20	24	29	33	37	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d2								20	24	29	33	37	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d1									38	41	44	48	55	55	58	●	●	●	●	●	●	●	●
SFC-060SA2	d2									38	41	44	48	55	55	58	●	●	●	●	●	●	●	●	●	●
SFC-080SA2	d1																54	60	65	75	85	90	●	●	●	●
SFC-080SA2	d2																54	60	65	75	85	90	●	●	●	●	●	●

Standard Bore Size (Fluorinated Grease Specifications)

models	Standard (Optional) Bore Sizes d1 and d2 [mm] and Permissible Torque [N·m]
models	d1·d2	5	6	6.35	7	8	9	9.525	10	11	12	13	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40
SFC-020SA2	d1	0.7	0.7	0.7	0.8	●	●	●	●
SFC-020SA2	d2	0.7	0.7	0.7	0.8	●	●	●	●	●
SFC-025SA2	d1	0.5	0.5	0.5	1.1	1.6	1.6	1.6	3.2	3.2	●	●	●
SFC-025SA2	d2	0.5	0.5	0.5	1.1	1.6	1.6	1.6	3.2	3.2	●	●	●
SFC-030SA2	d1	0.8	2	2.4	3.1	4.3	●	●	●	●	●	●	●
SFC-030SA2	d2	0.8	2	2.4	3.1	4.3	●	●	●	●	●	●	●	●	●
SFC-035SA2	d1		3.6	5.2	6.4	8.2	●	●	●	●	●	●	●	●	●
SFC-035SA2	d2		3.6	5.2	6.4	8.2	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040SA2	d1					●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-040SA2	d2					●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d1					11	17	19	20	22	●	●	●	●	●	●	●	●	●	●	●	●
SFC-050SA2	d2					11	17	19	20	22	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d1								28	37	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-055SA2	d2								28	37	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d1									40	44	49	53	●	●	●	●	●	●	●	●	●	●	●
SFC-060SA2	d2									40	44	49	53	●	●	●	●	●	●	●	●	●	●	●	●	●
SFC-080SA2	d1																60	66	71	81	90	95	●	●	●	●
SFC-080SA2	d2																60	66	71	81	90	95	●	●	●	●	●	●

The standard bore size for shaft tolerance h7 (h6·g6) is nominal size B. However, for a bore size of φ35, the shaft tolerance ranges from -0.025 to +0.010.
The bore sizes indicated by the ● symbol and numerical values in the corresponding columns are standard bore sizes. For bore sizes not listed in the table above, we may be able to accommodate them on a case-by-case basis, so Contact Us.
For holes with numerical values, the permissible (operating) torque is limited by the holding power at the shaft fastening section due to the small bore size. The numerical values indicate the permissible torque [N·m].