SFS [S-C] Electroless Nickel Plating Type

三木プーリのサーボフレックスSFSモデル SFS-S-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・サーボ用高精度軸継手）
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This simplified anti-corrosion model features a S-type single-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 standard. 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]
Angular deflection [°] Axial length [mm]
SFS-05S-C 15 1 ±0.6 25,000 16,000 43 0.11×10⁻³ 0.30 20,880
SFS-06S-C 30 ±0.8 20,000 29,000 45 0.30×10⁻³ 0.50 22,690
SFS-08S-C 60 ±1.0 17,000 83,000 60 0.87×10⁻³ 1.00 26,480
SFS-09S-C 135 ±1.2 15,000 170,000 122 1.60×10⁻³ 1.40 29,000
SFS-10S-C 190 ±1.4 13,000 250,000 160 2.60×10⁻³ 2.10 31,520
SFS-12S-C 340 ±1.6 11,000 430,000 197 6.50×10⁻³ 3.40 42,570
SFS-14S-C 600 ±1.8 9,500 780,000 313 9.90×10⁻³ 4.90 53,740
  • 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-S-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・サーボ用高精度軸継手）
Unit [mm]
Model d1・d2 D N L LF S F K M
Min Max
SFS-05S-C 8 20 56 32 45 20 5 11 24 4-M5×22
SFS-06S-C 25 68 40 56 25 6 10 30 4-M6×25
SFS-08S-C 11 35 82 54 66 30 11 38 4-M6×29
SFS-09S-C 38 94 58 68 8 21 42 4-M8×36
SFS-10S-C 16 42 104 68 80 35 10 16 48
SFS-12S-C 19 50 126 78 91 40 11 23 54 4-M10×45
SFS-14S-C 22 60 144 88 102 45 12 31 61 4-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-05S-C ● ● ● ● ● ● ● ● ● ● ● ●
SFS-06S-C ● ● ●
SFS-08S-C ● ● ● ●
SFS-09S-C ●
SFS-10S-C ● ●
SFS-12S-C ● ● ●
SFS-14S-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S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寸法図 外形寸法および主要部寸法を示す寸法図

[Standard Hole Machining Specifications]

SFS(S)穴加工規格
Unit [mm]
Compliant with JIS B 1301 1959 (Type 2) Compliant with JIS New Standard H9 JIS B 1301 1996 New JIS Standard (1996) JIS B 1301
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 13.8+0.30 12J 12 + 0.0180 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 + 0.30
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 45.3+0.30 42J 42 + 0.0250 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 60.3+0.30 56J 56+0.0300 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 specific positioning accuracy for the keyways relative to each hub.
  • For standard dimensions of hole sizes 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