SFS [G-C] Custom Length, Electroless Nickel Plating Type

三木プーリのサーボフレックスSFSモデル SFS-G-Cタイプ 金属板ばねカップリング製品画像（全長指定対応＋無電解ニッケルめっき仕様・耐食性向上・サーボ用軸継手）
Download Catalog
User Manual Download
This simplified anti-corrosion design features an electroless nickel-plated floating shaft housing for enhanced corrosion resistance. Since the shaft is typically secured using a key and set screw, please select the appropriate hole diameter and keyway specifications. As these are supplied as individual components, they allow for flexible assembly.

[Specifications]

SFS-G-C 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]
Eccentricity
[mm]		 Angular offset
[°]		 Axial length
[mm]
SFS-05G-C 15 0.5 1 (per side) ±1.2 20,000 8,000 21 0.20×10⁻³ 0.5 －
SFS-06G-C 30 ±1.6 16,000 14,000 22 0.55×10⁻³ 0.9 －
SFS-08G-C 60 ±2.0 13,000 41,000 30 1.50×10⁻³ 1.7 －
SFS-09G-C 135 0.6 ±2.4 12,000 85,000 61 2.90×10⁻³ 2.4 －
SFS-10G-C 190 ±2.8 10,000 125,000 80 4.60×10⁻³ 3.3 －
SFS-12G-C 340 0.8 ±3.2 8000 215,000 98 11.80×10⁻³ 5.8 －
SFS-14G-C 600 0.9 ±3.6 7000 390,000 156 21.20×10⁻³ 8.6 －
  • 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-G-Cタイプ 金属板ばねカップリング寸法図（全長指定対応＋無電解ニッケルめっき仕様・耐食性向上・サーボ用軸継手）
Unit [mm]
Model d1・d2 D N L LF LS S F K M
Pilot hole Minimum Max
SFS-05G-C 7 8 20 56 32 74 20 24 5 11 24 8-M5×22
SFS-06G-C 25 68 40 86 25 6 10 30 8-M6×25
SFS-08G-C 10 11 35 82 54 98 30 26 11 38 8-M6×29
SFS-09G-C 38 94 58 106 30 8 21 42 8-M8×36
SFS-10G-C 15 16 42 104 68 120 35 10 16 48
SFS-12G-C 18 19 50 126 78 140 40 38 11 23 54 8-M10×45
SFS-14G-C 20 22 60 144 88 160 45 46 12 31 61 8-M12×54
  • 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]
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-05G-C ● ● ● ● ● ● ● ● ● ● ● ●
SFS-06G-C ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFS-08G-C ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFS-09G-C ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFS-10G-C ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFS-12G-C ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFS-14G-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 Gタイプ（全長指定・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 Drilling Specifications]

?
Keyway and Hole Diameter Chart
Unit [mm]
Compatible with JIS B 1301 1959 (Type
2, Old Standard)		JIS New Standard (H9
) JIS B 1301 1996		JIS New Standard JS9
(Compliant with JIS B 1301:1996)		JIS New Standard P9
(Compliant with JIS B 1301:1996)
Nominal hole diameterHole Diameter
(d1, d2)		Keyway
width
(W1, W2)		Keyway
depth
(T1, T2)		Set
screw hole
(M)		Nominal hole diameterHole diameter
(d1, d2)		Keyway
width
(W1, W2)		Keyway
depth
(T1, T2)		Set
screw hole
(M)		Nominal hole diameterHole diameter
(d1, d2)		Keyway
width
(W1, W2)		Keyway
depth
(T1, T2)		Set
screw hole
(M)		Nominal hole diameterHole diameter
(d1, d2)		Keyway
width
(W1, W2)		Keyway
depth
(T1, T2)		Set
screw hole
(M)
Tolerance
H7, H8		Tolerance
E9		−−Tolerance
H7, H8		Tolerance
H9		−−Tolerance
H7, H8		Tolerance
JS9		−−Tolerance
H7, H8		Tolerance
P9		−−
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 8P 8 + 0.0220 3–0.006–0.031 9.4 + 0.30 2-M4
9 9 + 0.0220 － － 2-M4 9H 9 + 0.0220 3 + 0.0250 10.4 + 0.30 2-M4 9J 9 + 0.0220 3±0.0125  10.4 + 0.30 2-M4 9P 9 + 0.0220 3–0.006–0.031 10.4 + 0.30 2-M4
10 10 + 0.0220 － － 2-M4 10H 10 + 0.0220 3 + 0.0250 11.4 + 0.30 2-M4 10J 10 + 0.0220 3±0.0125  11.4 + 0.30 2-M4 10P 10 + 0.0220 3–0.006–0.031 11.4 + 0.30 2-M4
11 11 + 0.0180 － － 2-M4 11H 11 + 0.0180 4 + 0.0300 12.8 + 0.30 2-M4 11J 11 + 0.0180 4±0.0150  12.8 + 0.30 2-M4 11P 11 + 0.0180 4–0.012–0.042 12.8 + 0.30 2-M4
12 12 + 0.0180 4 + 0.050 + 0.020 13.5 + 0.30 2-M4 12H 12 + 0.0180 4 + 0.0300 13.8 + 0.30 2-M4 12J 12 + 0.0180 4±0.0150  13.8 + 0.30 2-M4 12P 12 + 0.0180 4–0.012–0.042 13.8 + 0.30 2-M4
14 14 + 0.0180 5 + 0.050 + 0.020 16.0 + 0.30 2-M4 14H 14 + 0.0180 5 + 0.0300 16.3 + 0.30 2-M4 14J 14 + 0.0180 5±0.0150  16.3 + 0.30 2-M4 14P 14+0.0180 5–0.012–0.042 16.3 + 0.30 2-M4
15 15 + 0.0180 5 + 0.050 + 0.020 17.0 + 0.30 2-M4 15H 15 + 0.0180 5 + 0.0300 17.3 + 0.30 2-M4 15J 15 + 0.0180 5±0.0150  17.3 + 0.30 2-M4 15P 15+0.0180 5–0.012–0.042 17.3 + 0.30 2-M4
16 16 + 0.0180 5 + 0.050 + 0.020 18.0 + 0.30 2-M4 16H 16 + 0.0180 5 + 0.0300 18.3 + 0.30 2-M4 16J 16 + 0.0180 5±0.0150  18.3 + 0.30 2-M4 16P 16 + 0.0180 5–0.012–0.042 18.3 + 0.30 2-M4
17 17 + 0.0180 5 + 0.050 + 0.020 19.0 + 0.30 2-M4 17H 17+0.0180 5 + 0.0300 19.3 + 0.30 2-M4 17J 17 + 0.0180 5±0.0150  19.3 + 0.30 2-M4 17P 17+0.0180 5–0.012–0.042 19.3 + 0.30 2-M4
18 18 + 0.0180 5 + 0.050 + 0.020 20.0 + 0.30 2-M4 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 18P 18 + 0.0180 6–0.012–0.042 20.8 + 0.30 2-M5
19 19 + 0.0210 5 + 0.050 + 0.020 21.0 + 0.30 2-M4 19H 19 + 0.0210 6 + 0.0300 21.8 + 0.30 2-M5 19J 19 + 0.0210 6±0.0150  21.8 + 0.30 2-M5 19P 19 + 0.0210 6–0.012–0.042 21.8 + 0.30 2-M5
20 20 + 0.0210 5 + 0.050 + 0.020 22.0 + 0.30 2-M4 20H 20 + 0.0210 6 + 0.0300 22.8 + 0.30 2-M5 20J 20 + 0.0210 6±0.0150  22.8 + 0.30 2-M5 20P 20 + 0.0210 6–0.012–0.042 22.8 + 0.30 2-M5
22 22 + 0.0210 7 + 0.061 + 0.025 25.0 + 0.30 2-M6 22H 22 + 0.0210 6 + 0.0300 24.8 + 0.30 2-M5 22J 22 + 0.0210 6±0.0150  24.8 + 0.30 2-M5 22P 22 + 0.0210 6–0.012–0.042 24.8 + 0.30 2-M5
24 24 + 0.0210 7 + 0.061 + 0.025 27.0 + 0.30 2-M6 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 24P 24 + 0.0210 8–0.015–0.051 27.3 + 0.30 2-M6
25 25 + 0.0210 7 + 0.061 + 0.025 28.0 + 0.30 2-M6 25H 25 + 0.0210 8 + 0.0360 28.3 + 0.30 2-M6 25J 25 + 0.0210 8±0.0180  28.3 + 0.30 2-M6 25P 25 + 0.0210 8–0.015–0.051 28.3 + 0.30 2-M6
28 28 + 0.0210 7 + 0.061 + 0.025 31.0 + 0.30 2-M6 28H 28 + 0.0210 8 + 0.0360 31.3 + 0.30 2-M6 28J 28 + 0.0210 8±0.0180  31.3 + 0.30 2-M6 28P 28 + 0.0210 8–0.015–0.051 31.3 + 0.30 2-M6
30 30 + 0.0210 7 + 0.061 + 0.025 33.0 + 0.30 2-M6 30H 30 + 0.0210 8 + 0.0360 33.3 + 0.30 2-M6 30J 30 + 0.0210 8±0.0180  33.3 + 0.30 2-M6 30P 30 + 0.0210 8–0.015–0.051 33.3 + 0.30 2-M6
32 32 + 0.0250 10 + 0.061 + 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 32P 32 + 0.0250 10–0.015–0.051 35.3 + 0.30 2-M8
35 35 + 0.0250 10 + 0.061 + 0.025 38.5 + 0.30 2-M8 35H 35 + 0.0250 10 + 0.0360 38.3 + 0.30 2-M8 35J 35 + 0.0250 10±0.0180  38.3 + 0.30 2-M8 35P 35+0.0250 10–0.015–0.051 38.3 + 0.30 2-M8
38 38 + 0.0250 10 + 0.061 + 0.025 41.5 + 0.30 2-M8 38H 38 + 0.0250 10 + 0.0360 41.3 + 0.30 2-M8 38J 38 + 0.0250 10±0.0180  41.3 + 0.30 2-M8 38P 38+0.0250 10–0.015–0.051 41.3 + 0.30 2-M8
40 40 + 0.0250 10 + 0.061 + 0.025 43.5 + 0.30 2-M8 40H 40 + 0.0250 12 + 0.0430 43.3 + 0.30 2-M8 40J 40 + 0.0250 12±0.0215  43.3 + 0.30 2-M8 40P 40 + 0.0250 12–0.018–0.061 43.3 + 0.30 2-M8
42 42 + 0.0250 12 + 0.075 + 0.032 45.5 + 0.30 2-M8 42H 42 + 0.0250 12 + 0.0430 45.3 + 0.30 2-M8 42J 42 + 0.0250 12±0.0215  45.3 + 0.30 2-M8 42P 42 + 0.0250 12–0.018–0.061 45.3 + 0.30 2-M8
45 45 + 0.0250 12 + 0.075 + 0.032 48.5 + 0.30 2-M8 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 45P 45 + 0.0250 14–0.018–0.061 48.8 + 0.30 2-M10
48 48 + 0.0250 12 + 0.075 + 0.032 51.5 + 0.30 2-M8 48H 48 + 0.0250 14 + 0.0430 51.8 + 0.30 2-M10 48J 48 + 0.0250 14±0.0215  51.8 + 0.30 2-M10 48P 48 + 0.0250 14–0.018–0.061 51.8 + 0.30 2-M10
50 50 + 0.0250 12 + 0.075 + 0.032 53.5 + 0.30 2-M8 50H 50 + 0.0250 14 + 0.0430 53.8 + 0.30 2-M10 50J 50 + 0.0250 14±0.0215  53.8 + 0.30 2-M10 50P 50 + 0.0250 14–0.018–0.061 53.8 + 0.30 2-M10
55 55 + 0.0300 15 + 0.075 + 0.032 60.0 + 0.30 2-M10 55H 55 + 0.0300 16 + 0.0430 59.3 + 0.30 2-M10 55J 55 + 0.0300 16±0.0215  59.3 + 0.30 2-M10 55P 55+0.0300 16–0.018–0.061 59.3 + 0.30 2-M10
56 56 + 0.0300 15 + 0.075 + 0.032 61.0 + 0.30 2-M10 56H 56 + 0.0300 16 + 0.0430 60.3 + 0.30 2-M10 56J 56 + 0.0300 16±0.0215  60.3 + 0.30 2-M10 56P 56+0.0300 16–0.018–0.061 60.3 + 0.30 2-M10
60 60 + 0.0300 15 + 0.075 + 0.032 65.0 + 0.30 2-M10 60H 60 + 0.0300 18 + 0.0430 64.4 + 0.30 2-M10 60J 60 + 0.0300 18±0.0215  64.4 + 0.30 2-M10 60P 60+0.0300 18–0.018–0.061 64.4 + 0.30 2-M10
  • 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 specific positioning accuracy for the keyways relative to each hub.
  • For standard dimensions of hole patterns 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