CF-A [OB] Bolt-Mounted Type

三木プーリのセンタフレックスCF-Aモデル CF-A-OBタイプ ゴム・樹脂カップリング製品画像（防振継手・軸ずれ補正・産業用伝動部品）
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Power is transmitted via pre-compressed rubber. It excels at absorbing vibrations and shocks, and also reduces noise from machinery. The elastic rubber component consists of a polygonal rubber body with aluminum inserts at its vertices. Only the rubber body and mounting bolts are included.

[Specifications]

Model Torque Tolerance Maximum Rotational Speed Dynamic torsional spring constant Moment of inertia Mass Price
Standard Maximum Permissible variation Eccentricity Angular Deviation Axial
[N·m] [N·m] [N·m/10 Hz] [mm] ［°］ [mm] [min⁻¹] [N·m/rad] [kg·m²] [kg] [JPY]
CF-A-001-OB-1360 10 25 ±4 0.5 3 ±2 10,000 1.47×10² 2.5×10⁻⁵ 0.1
CF-A-002-OB-1360 20 50 ±8 1 3 ±3 8,000 2.92×10² 1.3×10⁻⁴ 0.2
CF-A-004-OB-1360 40 100 ±16 1 3 ±3 7,000 7.59×10² 2.8×10⁻⁴ 0.2
CF-A-008-OB-1360 80 200 ±32 1 3 ±4 6500 1.44×10³ 7.6×10⁻⁴ 0.3
CF-A-012-OB-1360 120 300 ±48 1 2 ±4 6,500 4.38×10³ 8.3×10⁻⁴ 0.3
CF-A-016-OB-1360 160 400 ±64 1.5 3 ±5 6000 3.28×10³ 2.5×10⁻³ 0.7
CF-A-022-OB-1360 220 550 ±88 1.5 2 ±5 6000 8.26×10³ 2.7×10⁻³ 0.7
CF-A-025-OB-1360 250 630 ±100 1.5 3 ±5 5000 4.12×10³ 4.2×10⁻³ 0.8
CF-A-028-OB-1360 350 880 ±140 1.5 2 ±5 5000 1.05×10⁴ 4.6×10⁻³ 1.0
CF-A-030-OB-1360 400 1000 ±160 1.5 3 ±5 4000 6.40×10³ 1.1×10⁻² 1.5
CF-A-050-OB-1360 600 1500 ±240 1.5 2 ±5 4000 1.48×10⁴ 1.2×10⁻² 1.7
CF-A-080-OB-1360 800 2000 ±320 1.5 2 ±4 4000 2.17×10⁴ 1.5×10⁻² 2.3
CF-A-090-OB-1360 900 2250 ±360 1.5 3 ±5 3600 1.37×10⁴ 3.8×10⁻² 3.2
CF-A-140-OB-1360 1400 3500 ±560 1.5 2 ±5 3600 2.90×10⁴ 4.2×10⁻² 3.7
CF-A-200-OB-1360 2000 5000 ±800 1.5 2 ±5 3200 6.08×10⁴ 7.8×10⁻² 5.5
CF-A-250-OB-1360 3000 8750 ±1250 1.5 2 ±5 3000 8.28×10⁴ 0.14 7.8
CF-A-400-OB-1360 5000 12,500 ±2000 1.5 2 ±5 2800 1.25×10⁵ 0.24 11.5
  • The maximum rotational speed does not take dynamic balance into account.
  • As a general rule, the dynamic torsional spring constant is approximately 1.3 times the static torsional spring constant.
  • The moment of inertia and mass listed above are assumed to be equivalent to those of the O0 type.

[Dimensions]

三木プーリのセンタフレックスCF-Aモデル CF-A-OBタイプ ゴム・樹脂カップリング寸法図（防振継手・軸ずれ補正・産業用伝動部品）
  • For the OB type, please refer to [Dimensions] CF-A(O0).
Unit [mm]

Model d1 d2 D1 D2 D3 N1 N2 L1 L2 L3 A B C E G1 G2 O P S TK M1 M2
Pilot hole Minimum Max Pilot hole Minimum Max
CF-A-001 8 9 19 8 9 22 57 56 56 30 36 32 24 58 24 7 34 22 11 - 5 18 2 44 2-M6 2-M6
CF-A-002 10 11 28 9 10 30 86 85 85 40 45 30 28 62 24 8 34 20 10 - 14 12 4 68 2-M8 2-M8
CF-A-004 12 14 30 11 12 36 100 97 100 45 55 34 30 68 28 8 38 24 12 - 18.3 17 4 80 3-M8 3-M8
CF-A-008 12 14 38 15 16 46 122 120 120 60 70 40 42 86 32 10 44 28 14 - 20.5 20.5 4 100 3-M10 3-M10
CF-A-012 12 14 38 15 16 46 122 120 120 60 70 40 42 86 32 10 44 28 14 - 20.5 20.5 4 100 4-M10 4-M10
CF-A-016 15 16 48 19 20 56 150 150 150 70 85 52 50 108 42 12 58 36 18 - 25 23.5 6 125 3-M12 3-M12
CF-A-022 15 16 48 19 20 56 150 150 150 70 85 52 50 108 42 12 58 36 18 - 25 23.5 6 125 4-M12 4-M12
CF-A-025 15 16 55 19 20 65 170 170 170 85 100 58 56 120 46 14 64 40 20 - 26 26 6 140 3-M14 3-M14
CF-A-028 15 16 55 19 20 65 170 170 170 85 100 58 56 120 46 14 64 40 20 - 26 26 6 140 4-M14 4-M14
CF-A-030 20 22 65 28 30 80 200 200 200 100 120 68 66 142 58 16 76 50 25 - 33 34.5 8 165 3-M16 3-M16
CF-A-050 20 22 65 28 30 80 200 200 200 100 120 68 66 142 58 16 76 50 25 - 33 34.5 8 165 4-M16 4-M16
CF-A-080 20 22 65 28 30 80 205 205 200 100 120 80 66 150 65 16 84 61 30.5 - 33 34.5 4 165 4-M16 4-M16
CF-A-090 30 32 85 30 32 95 260 260 260 125 140 84 80 172 70 19 92 62 31 - 46 45 8 215 3-M20 3-M20
CF-A-140 30 32 85 30 32 95 260 260 260 125 140 84 80 172 70 19 92 62 31 - 46 45 8 215 4-M20 4-M20
CF-A-200 35 38 105 35 38 110 300 300 300 145 160 94 90 192 80 19 102 72 36 - 46 45 8 250 4-M20 4-M20
CF-A-250 40 42 115 40 42 120 340 340 340 160 180 100 100 208 85 19 108 77 22.5 32 60 60 8 280 4-M20 8-M20
CF-A-400 40 42 115 40 42 130 370 370 370 170 200 125 125 260 105 29 135 95 28.5 38 70.5 67 10 300 4-M24 8-M20
  • The values in the table above represent the dimensions after the rubber body has been assembled; therefore, the N1, TK, D1, and D2 dimensions prior to assembly differ from those shown in the table.
  • The TK dimension refers to the bolt mounting pitch diameter of the flange hub or mating mounting surface.
  • The designation for M1 and M2 bolts is based on the quantity and thread size.
  • When using hex socket head cap screws with the CF-A-400, you must use the special flat washers included with the rubber body.
三木プーリのセンタフレックスCF-Aモデル OB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