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SFS [W-C] Electroless Nickel Plating Type

三木プーリのサーボフレックスSFSモデル SFS-W-Cタイプ金属板ばねカップリング製品画像（無電解ニッケルめっき仕様・耐食性向上・サーボ用途軸継手）

This simplified anti-corrosion model features a W-type double-element body with an electroless nickel plating to enhance corrosion resistance. Since the shaft is typically secured using a key and set screw, please select the appropriate hole diameter and keyway specifications. As this product is supplied as a component, it allows for flexible assembly.

[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 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]
SFS-05W-C	15	0.2	1 (per side)	±1.2	10,000	8,000	21	0.14×10⁻³	0.40	34,230
SFS-06W-C	30	0.3		±1.6	8,000	14,000	22	0.41×10⁻³	0.70	37,440
SFS-08W-C	60	0.3		±2.0	6,800	41,000	30	1.10×10⁻³	1.30	43,330
SFS-09W-C	135	0.5		±2.4	6,000	85,000	61	2.20×10⁻³	2.10	47,810
SFS-10W-C	190	0.5		±2.8	5200	125,000	80	3.60×10⁻³	2.80	52,280
SFS-12W-C	340	0.6		±3.2	4,400	215,000	98	9.20×10⁻³	4.90	71,800
SFS-14W-C	600	0.7		±3.6	3,800	390,000	156	15.00×10⁻³	7.10	91,920

The maximum rotational speed does not take dynamic balance into account.
The moment of inertia and mass are based on the maximum bore diameter.

[Dimensions]

三木プーリのサーボフレックスSFSモデル SFS-W-Cタイプ金属板ばねカップリング寸法図（無電解ニッケルめっき仕様・耐食性向上・サーボ用途軸継手）

Unit [mm]

Model	d1・d2		D	N	L	LF	LP	S	F	d3	K	M
Model	Min	Max	D	N	L	LF	LP	S	F	d3	K	M
SFS-05W-C	8	20	56	32	58	20	8	5	4	20	24	8-M5×15
SFS-06W-C	8	25	68	40	74	25	12	6	3	24	30	8-M6×18
SFS-08W-C	11	35	82	54	84	30	12	6	2	28	38	8-M6×20
SFS-09W-C	11	38	94	58	98	30	22	8	12	32	42	8-M8×27
SFS-10W-C	16	42	104	68	110	35	20	10	7	34	48	8-M8×27
SFS-12W-C	19	50	126	78	127	40	25	11	10	40	54	8-M10×32
SFS-14W-C	22	60	144	88	144	45	30	12	15	46	61	8-M12×38

The pilot hole is a drill hole. For machined holes, please refer to the standard hole machining specifications.
The size of a Reema Bolt M is calculated as: quantity × thread size × nominal length.

[Standard Hole Diameter]

Model	Standard Hole Diameter d1・d2 [mm]
Model	8	9	10	11	12	14	15	16	17	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50	55	56	60
SFS-05W-C	●	●	●	●	●	●	●	●	●	●	●	●
SFS-06W-C	●	●	●										●	●	●
SFS-08W-C																●	●	●	●
SFS-09W-C																				●
SFS-10W-C																					●	●
SFS-12W-C																							●	●	●
SFS-14W-C																							●	●	●	●	●	●

The hole diameters indicated by the ● symbol are standard hole diameters. For details, please refer to the standard hole machining specifications.

三木プーリのサーボフレックスシリーズSFSモデル Wタイプ（無電解ニッケルめっき仕様）金属板ばねカップリングご注文時の型式構成説明図

[Standard Hole Machining Specifications]

Unit [mm]

Compliant with JIS B 1301 1959 (Type 2)					Compliant with JIS New Standard H9 JIS B 1301 1996					New JIS Standard JS9 (Compliant with JIS B 1301:1996)
Nominal hole diameter	Hole Diameter (d1, d2)	Keyway width (W1, W2)	Keyway depth (T1, T2)	Set screw hole (M)	Nominal hole diameter	Hole diameter (d1, d2)	Keyway width (W1, W2)	Keyway depth (T1, T2)	Set screw hole (M)	Nominal hole diameter	Hole diameter (d1, d2)	Keyway width (W1, W2)	Keyway depth (T1, T2)	Set screw hole (M)
Nominal hole diameter	Tolerance H7, H8	Tolerance E9	－	－	Nominal hole diameter	Tolerance H7, H8	Tolerance H9	－	－	Nominal hole diameter	Tolerance H7, H8	Tolerance JS9	－	－
8	8^+0.0220	－	－	2-M4	8H	8^+0.0220	3 ^{+ 0.0250}	9.4^+0.3₀	2-M4	8J	8 ^{+ 0.0220}	3±0.0125	9.4^+0.3₀	2-M4
9	9 ^{+ 0.0220}				9H	9^+0.0220		10.4^+0.3₀		9J	9 ^{+ 0.0220}		10.4^+0.3₀
10	10+0^.0220				10H	10 ^{+ 0.0220}		11.4^+0.3₀		10J	10 ^{+ 0.0220}		11.4^+0.3₀
11	11+^0.0180				11H	11 ^{+ 0.0180}	4 ^{+ 0.0300}	12.8^+0.3₀		11J	11 ^{+ 0.0180}	4±0.0150	12.8^+0.3₀
12	12 ^{+ 0.0180}	4 ^{+ 0.050} _{+ 0.020}	13.5^+0.3₀		12H	12 ^{+ 0.0180}	4 ^{+ 0.0300}	13.8^+0.3₀		12J	12 ^{+ 0.0180}	4±0.0150	13.8^+0.3₀
14	14+^0.0180	5 ^{+ 0.050} _{+ 0.020}	16^+0.3₀		14H	14 ^{+ 0.0180}	5 ^{+ 0.0300}	16.3^+0.3₀		14J	14 ^{+ 0.0180}	5 ± 0.0150	16.3^+0.3₀
15	15 ^{+ 0.0180}		17^+0.3₀		15H	15 ^{+ 0.0180}		17.3^+0.3₀		15J	15+^0.0180		17.3^+0.3₀
16	16 ^{+ 0.0180}		18^+0.3₀		16H	16 ^{+ 0.0180}		18.3^+0.3₀		16J	16+^0.0180		18.3^+0.3₀
17	17 ^{+ 0.0180}		19^+0.3₀		17H	17 ^{+ 0.0180}		19.3^+0.3₀		17J	17+^0.0180		19.3^+0.3₀
18	18 ^{+ 0.0180}		20⁺0^.3₀		18H	18 ^{+ 0.0180}	6 ^{+ 0.0300}	20.8^+0.3₀	2-M5	18J	18 ^{+ 0.0180}	6±0.0150	20.8^+0.3₀	2-M5
19	19 ^{+ 0.0210}		21^+0.3₀		19H	19 ^{+ 0.0210}		21.8^+0.3₀		19J	19 ^{+ 0.0210}		21.8^+0.3₀
20	20 ^{+ 0.0210}		22^+0.3₀		20H	20 ^{+ 0.0210}		22.8^+0.3₀		20J	20 ^{+ 0.0210}		22.8^+0.3₀
22	22 ^{+ 0.0210}	7 ^{+ 0.06 1} _{+ 0.025}	25^+0.3₀	2-M6	22H	22 ^{+ 0.0210}		24.8^+0.3₀		22J	22 ^{+ 0.0210}		24.8^+0.3₀
24	24 ^{+ 0.0210}		27^+0.3₀		24H	24 ^{+ 0.0210}	8 ^{+ 0.0360}	27.3^+0.3₀	2-M6	24J	24 ^{+ 0.0210}	8±0.0180	27.3^+0.3₀	2-M6
25	25 ^{+ 0.0210}		28^+0.3₀		25H	25 ^{+ 0.0210}		28.3^+0.3₀		25J	25+^0.0210		28.3^+0.3₀
28	28 ^{+ 0.0210}		31^+0.3₀		28H	28 ^{+ 0.0210}		31.3^+0.3₀		28J	28+^0.0210		31.3^+0.3₀
30	30 ^{+ 0.0210}		33^+0.3₀		30H	30 ^{+ 0.0210}		33.3^+0.3₀		30J	30 ^{+ 0.0210}		33.3 ^{+ 0.3}₀
32	32 ^{+ 0.0250}	10 ^{+ 0.06 1} _{+ 0.025}	35.5^+0.3₀	2-M8	32H	32 ^{+ 0.0250}	10 ^{+ 0.0360}	35.3^+0.3₀	2-M8	32J	32 ^{+ 0.0250}	10±0.0180	35.3^+0.3₀	2-M8
35	35 ^{+ 0.0250}		38.5^+0.3₀		35H	35 ^{+ 0.0250}		38.3^+0.3₀		35J	35+^0.0250		38.3^+0.3₀
38	38 ^{+ 0.0250}		41.5^+0.3₀		38H	38 ^{+ 0.0250}		41.3^+0.3₀		38J	38+^0.0250		41.3^+0.3₀
40	40+0^.0250		43.5^+0.3₀		40H	40+0^.0250	12 ^{+ 0.0430}	43.3^+0.3₀		40J	40 ^{+ 0.0250}	12±0.0215	43.3^+0.3₀
42	42 ^{+ 0.0250}	12 ^{+ 0.}₀⁷⁵ _{+ 0.032}	45.5^+0.3₀		42H	42 ^{+ 0.0250}	12 ^{+ 0.0430}	45.3^+0.3₀		42J	42+^0.0250	12±0.0215	45.3^+0.3₀
45	45+^0.0250		48.5^+0.3₀		45H	45+^0.0250	14 ^{+ 0.0430}	48.8^+0.3₀	2-M10	45J	45 ^{+ 0.0250}	14±0.0215	48.8^+0.3₀	2-M10
48	48 ^{+ 0.0250}		51.5^+0.3₀		48H	48 ^{+ 0.0250}		51.8^+0.3₀		48J	48 ^{+ 0.0250}		51.8^+0.3₀
50	50 ^{+ 0.0250}		53.5^+0.3₀		50H	50 ^{+ 0.0250}		53.8^+0.3₀		50J	50 ^{+ 0.0250}		53.8^+0.3₀
55	55+^0.0300	15 ^{+ 0.}₀⁷⁵ _{+ 0.032}	60⁺0^.3₀	2-M10	55H	55+^0.0300	16 ^{+ 0.0430}	59.3^+0.3₀		55J	55 ^{+ 0.0300}	16±0.0215	59.3^+0.3₀
56	56 ^{+ 0.0300}		61^+0.3₀		56H	56+^0.0300	16 ^{+ 0.0430}	60.3^+0.3₀		56J	56+^0.0300	16±0.0215	60.3^+0.3₀
60	60+0^.0300		65^+0.3₀		60H	60 ^{+ 0.0300}	18 ^{+ 0.0430}	64.4^+0.3₀		60J	60 ^{+ 0.0300}	18 ± 0.0215	64.4^+0.3₀

The set screw and the keyway will not be on the same plane.
The set screw is included with the product.
The positional accuracy of keyway machining is checked visually.
Please contact us if you require positional accuracy for the keyways relative to each hub.
For standard dimensions of hole machining other than those listed here, please refer to the technical data at the end of this document.

【止めねじの位置】

SFS 端面からの位置表

型式	端面からの位置［mm］
SFS-05	7
SFS-06	9
SFS-08	10
SFS-09	10
SFS-10	12
SFS-12	12
SFS-14	15