CF-X [O2] Type

三木プーリのセンタフレックスCF-Xモデル CF-X-O2タイプ ゴム・樹脂カップリング製品画像（防振・高トルク対応・柔軟軸継手）
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This coupling features a backlash-free design and uses nylon resin elements for power transmission. This design is rigid in the torsional direction while offering high flexibility in the lateral and axial directions, enabling precise power transmission while absorbing vibrations and shocks.The O2 type is a complete coupling set that includes a nylon resin element, a cylindrical hub, a flanged hub, and bolts.

[Specifications]

Model Torque Tolerance Maximum Rotational Speed Static torsional spring constant Moment of inertia Mass
Standard Maximum Eccentricity Angular Axial
[N·m] [N·m] [mm] ［°］ [mm] [min⁻¹] [N·m/rad] [kg·m²] [kg]
CF-X-001-O2 15 30 0.1 1 ±0.5 10,000 3.0×10³ 1.22×10⁻⁴ 0.5
CF-X-002-O2 30 60 0.1 1 ±0.5 10,000 6.0×10³ 5.74×10⁻⁴ 0.9
CF-X-004-O2 60 120 0.1 1 ±0.5 8000 2.3×10⁴ 1.19×10⁻³ 1.4
CF-X-008-O2 120 250 0.1 1 ±0.5 7000 5.8×10⁴ 3.49×10⁻³ 2.9
CF-X-016-O2 240 500 0.1 1 ±0.5 6000 1.1×10⁵ 9.20×10⁻³ 5.0
CF-X-025-O2 370 800 0.1 1 ±0.5 5000 1.7×10⁵ 1.83×10⁻² 7.9
  • The values for moment of inertia and mass apply to cylindrical hubs and flanged hubs with a through-bore.

[Dimensions]

三木プーリのセンタフレックスCF-Xモデル CF-X-O2タイプ ゴム・樹脂カップリング寸法図（防振・高トルク対応・柔軟軸継手）
Unit [mm]
Model d1 d2 D1 D2 N1 N2 L1 L2 L3 A B C E G S S1 M1 M2 TK
Pilot hole Minimum Max Pilot hole Min Max
CF-X-001 8 9 19 8 9 22 57 56 30 36 32 24 57 24 7 33 18 11 3 1 2-M6 2-M6 44
CF-X-002 10 11 26 9 10 30 88 85 40 45 30 28 62 24 8 34 20 10 4 4 2-M8 2-M8 68
CF-X-004 12 14 30 11 12 36 100 100 45 55 34 30 66.5 25 8 36.5 21 12 4 2.5 3-M8 3-M8 80
CF-X-008 12 14 38 15 16 46 125 120 60 70 40 42 85 30 10 43 26 14 4 3 3-M10 3-M10 100
CF-X-016 15 16 48 19 20 56 155 150 70 85 52 50 105 35 12 55 28 18 7 3 3-M12 3-M12 125
CF-X-025 15 16 55 19 20 65 175 170 85 100 58 56 117 40 14 61 34 20 6 3 3-M14 3-M14 140
  • The pilot hole is a drill hole. The minimum values for d1 and d2 indicate the minimum hole diameters specified in our standard hole machining specifications, while the maximum values indicate the largest hole diameters that can be machined.
  • The designation for M1 and M2 bolts consists of the quantity followed by the thread size.
  • The TK dimension refers to the bolt mounting pitch diameter of the flange hub or mating mounting surface.

[Standard Hole Drilling Specifications]

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Keyway and Hole Diameter Chart
Unit [mm]
Compliant with JIS B 1301 1959 (Type
2)		 Compliant with New JIS Standard H9
JIS B 1301 1996		 Motor Standard
JIS C 4210 2001
Nominal Bore Diameter Bore 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 Tolerance H9 － － Nominal hole diameter Tolerance G7, F7 Tolerance H9 － －
9 9+0.0220 － － 2-M4 － － － － － － － － － －
10 10+0.0220 － － 2-M4 － － － － － － － － － －
11 11 + 0.0180 － － 2-M4 － － － － － － － － － －
12 12 + 0.0180 4 + 0.05 + 0.02 13.5 + 0.30 2-M4 12H 12 + 0.0180 4 + 0.030 13.8 + 0.30 2-M4 － － － － －
14 14 + 0.0180 5 + 0.05 + 0.02 16.0 + 0.30 2-M4 14H 14 + 0.0180 5 + 0.030 16.3 + 0.30 2-M4 14N 14 + 0.024 + 0.006 5 + 0.030 16.3 + 0.30 2-M4
15 15 + 0.0180 5 + 0.05 + 0.02 17.0 + 0.30 2-M4 15H 15 + 0.0180 5 + 0.030 17.3 + 0.30 2-M4 － － － － －
16 16 + 0.0180 5 + 0.05 + 0.02 18.0 + 0.30 2-M4 16H 16 + 0.0180 5 + 0.030 18.3 + 0.30 2-M4 － － － － －
17 17 + 0.0180 5 + 0.05 + 0.02 19.0 + 0.30 2-M4 17H 17 + 0.0180 5 + 0.030 19.3 + 0.30 2-M4 － － － － －
18 18 + 0.0180 5 + 0.05 + 0.02 20.0 + 0.30 2-M4 18H 18 + 0.0180 6 + 0.030 20.8 + 0.30 2-M5 － － － － －
19 19 + 0.0210 5 + 0.05 + 0.02 21.0 + 0.30 2-M4 19H 19 + 0.0210 6 + 0.030 21.8 + 0.30 2-M5 19N 19 + 0.028 + 0.007 6 + 0.030 21.8 + 0.30 2-M5
20 20 + 0.0210 5 + 0.05 + 0.02 22.0 + 0.30 2-M4 20H 20 + 0.0210 6 + 0.030 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 + 0.030 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 24N 24 + 0.028 + 0.007 8 + 0.0360 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 － － － － －
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 28N 28 + 0.02 8 + 0.007 8 + 0.0360 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 － － － － －
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 － － － － －
35 35 + 0.0250 10 + 0.06 1 + 0.025 38.5 + 0.30 2-M8 35H 35 + 0.0250 10 + 0.0360 38.3 + 0.30 2-M8 － － － － －
38 38 + 0.0250 10 + 0.06 1 + 0.025 41.5 + 0.30 2-M8 38H 38 + 0.0250 10 + 0.0360 41.3 + 0.30 2-M8 38N 38 + 0.05 + 0.025 10 + 0.0360 41.3 + 0.30 2-M8
40 40 + 0.0250 10 + 0.06 1 + 0.025 43.5 + 0.30 2-M8 40H 40 + 0.0250 12 + 0.0430 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 42N 42 + 0.05 + 0.025 12 + 0.0430 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 － － － － －
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 48N 48 + 0.05 + 0.025 14 + 0.0430 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 － － － － －
55 55 + 0.030 15 + 0.075 + 0.032 60.0 + 0.30 2-M10 55H 55 + 0.030 16 + 0.0430 59.3 + 0.30 2-M10 55N 55 + 0.06 + 0.03 16 + 0.0430 59.3 + 0.30 2-M10
56 56 + 0.030 15 + 0.075 + 0.032 61.0 + 0.30 2-M10 56H 56 + 0.030 16 + 0.0430 60.3 + 0.30 2-M10 － － － － －
60 60 + 0.030 15 + 0.075 + 0.032 65.0 + 0.30 2-M10 60H 60 + 0.030 18 + 0.0430 64.4 + 0.30 2-M10 60N 60 + 0.06 + 0.03 18 + 0.0430 64.4 + 0.30 2-M10
63 63 + 0.030 18 + 0.075 + 0.032 69.0 + 0.30 2-M10 63H 63 + 0.030 18 + 0.0430 67.4 + 0.30 2-M10 － － － － －
65 65 + 0.030 18 + 0.075 + 0.032 71.0 + 0.30 2-M10 65H 65+0.030 18 + 0.0430 69.4 + 0.30 2-M10 65N 65 + 0.06 + 0.03 18 + 0.0430 69.4 + 0.30 2-M10
  • All specifications for diameters of 11 mm or less are identical to those listed in the "Old JIS Standards" column.
  • 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 machining other than those listed here, please refer to the technical documentation.
三木プーリのセンタフレックスCF-Xモデル O2タイプ ゴム・樹脂カップリング ご注文時の型式構成説明図

[Location of the set screw (cylindrical hub)]

Unit [mm]
Cylindrical Hub Side Coupling Model Distance from end face [mm]
CF-X-001 6
CF-X-002 6
CF-X-004 6
CF-X-008 7
CF-X-016 10
CF-X-025 10

[Location of the set screw (flange hub)]

Unit [mm]
Flange Hub Side Coupling Model Position from end face [mm]
CF-X-001 6
CF-X-002 7
CF-X-004 7
CF-X-008 9
CF-X-016 10
CF-X-025 10