• JAC Disc Coupling (A3, A4, Ax, E4, G4 Types)
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JAC Disc Coupling (A3, A4, Ax, E4, G4 Types)

JAC Disc Coupling (A3, A4, Ax, E4, G4 Types)

All-steel flexible disc coupling that transmits torque through laminated disc elements with no backlash and no lubrication. Offered as close-coupled A3, spacer types A4 and Ax, and high-torque 6-bolt E4 and 8-bolt G4 designs.

Key features

  • No lubrication and semi-permanent life within allowable misalignment
  • Wide misalignment capacity with low reaction force on shafts
  • Bolts are held in washers so drive continues if a disc breaks
  • Few parts, fast installation and good reassembly repeatability for high-speed machines
  • Maintenance is a visual check of disc elements and bolts

Specifications

Types A3 (4-bolt), A4/Ax spacer, E4 (6-bolt), G4 (8-bolt)
Torque range 3.4 - 13,070 kg-m
Max. speed Up to 47,000 rpm
Hub options Standard N-hub; P-hub and Z-hub (A3)
Spacer A4 standard, Ax short, AB custom length
Lubrication None required
Unit mm, kg-m
Source JAC Couplings Disc Coupling catalogue
A3-05 Type: A3, 4-bolt | Torque: 3.4 kg-m | Max. speed: 47,000 rpm | Max. bore: 22 mm
A3-10 Type: A3, 4-bolt | Torque: 9.2 kg-m | Max. speed: 39,000 rpm | Max. bore: 32 mm
A3-15 Type: A3, 4-bolt | Torque: 18 kg-m | Max. speed: 34,000 rpm | Max. bore: 35 mm
A3-20 Type: A3, 4-bolt | Torque: 25 kg-m | Max. speed: 30,000 rpm | Max. bore: 42 mm
A3-25 Type: A3, 4-bolt | Torque: 43 kg-m | Max. speed: 25,000 rpm | Max. bore: 50 mm
A3-30 Type: A3, 4-bolt | Torque: 79 kg-m | Max. speed: 22,000 rpm | Max. bore: 60 mm
A3-35 Type: A3, 4-bolt | Torque: 130 kg-m | Max. speed: 19,000 rpm | Max. bore: 72 mm
A3-40 Type: A3, 4-bolt | Torque: 210 kg-m | Max. speed: 16,000 rpm | Max. bore: 82 mm
A3-45 Type: A3, 4-bolt | Torque: 340 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
A3-50 Type: A3, 4-bolt | Torque: 500 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
A3-55 Type: A3, 4-bolt | Torque: 650 kg-m | Max. speed: 11,000 rpm | Max. bore: 118 mm
A4-05 Type: A4 standard spacer | Torque: 3.4 kg-m | Max. speed: 47,000 rpm | Max. bore: 22 mm
A4-10 Type: A4 standard spacer | Torque: 9.2 kg-m | Max. speed: 39,000 rpm | Max. bore: 32 mm
A4-15 Type: A4 standard spacer | Torque: 18 kg-m | Max. speed: 34,000 rpm | Max. bore: 35 mm
A4-20 Type: A4 standard spacer | Torque: 25 kg-m | Max. speed: 30,000 rpm | Max. bore: 42 mm
A4-25 Type: A4 standard spacer | Torque: 43 kg-m | Max. speed: 25,000 rpm | Max. bore: 50 mm
A4-30 Type: A4 standard spacer | Torque: 79 kg-m | Max. speed: 22,000 rpm | Max. bore: 60 mm
A4-35 Type: A4 standard spacer | Torque: 130 kg-m | Max. speed: 19,000 rpm | Max. bore: 72 mm
A4-40 Type: A4 standard spacer | Torque: 210 kg-m | Max. speed: 6,000 rpm | Max. bore: 82 mm
A4-45 Type: A4 standard spacer | Torque: 340 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
A4-50 Type: A4 standard spacer | Torque: 500 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
A4-55 Type: A4 standard spacer | Torque: 650 kg-m | Max. speed: 11,000 rpm | Max. bore: 118 mm
AX-05 Type: Ax short spacer | Torque: 3.4 kg-m | Max. speed: 47,000 rpm | Max. bore: 22 mm
AX-10 Type: Ax short spacer | Torque: 9.2 kg-m | Max. speed: 39,000 rpm | Max. bore: 32 mm
AX-15 Type: Ax short spacer | Torque: 18 kg-m | Max. speed: 34,000 rpm | Max. bore: 35 mm
AX-20 Type: Ax short spacer | Torque: 25 kg-m | Max. speed: 30,000 rpm | Max. bore: 42 mm
AX-25 Type: Ax short spacer | Torque: 43 kg-m | Max. speed: 25,000 rpm | Max. bore: 50 mm
AX-30 Type: Ax short spacer | Torque: 79 kg-m | Max. speed: 22,000 rpm | Max. bore: 60 mm
AX-35 Type: Ax short spacer | Torque: 130 kg-m | Max. speed: 19,000 rpm | Max. bore: 72 mm
AX-40 Type: Ax short spacer | Torque: 210 kg-m | Max. speed: 6,000 rpm | Max. bore: 82 mm
AX-45 Type: Ax short spacer | Torque: 340 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
AX-50 Type: Ax short spacer | Torque: 500 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
AX-55 Type: Ax short spacer | Torque: 650 kg-m | Max. speed: 11,000 rpm | Max. bore: 118 mm
E4-00 Type: E4, 6-bolt | Torque: 58 kg-m | Max. speed: 26,000 rpm | Max. bore: 51 mm
E4-01 Type: E4, 6-bolt | Torque: 94 kg-m | Max. speed: 23,000 rpm | Max. bore: 55 mm
E4-02 Type: E4, 6-bolt | Torque: 174 kg-m | Max. speed: 19,000 rpm | Max. bore: 67 mm
E4-03 Type: E4, 6-bolt | Torque: 341 kg-m | Max. speed: 17,000 rpm | Max. bore: 72 mm
E4-04 Type: E4, 6-bolt | Torque: 633 kg-m | Max. speed: 15,000 rpm | Max. bore: 85 mm
E4-05 Type: E4, 6-bolt | Torque: 620 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
E4-10 Type: E4, 6-bolt | Torque: 840 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
E4-15 Type: E4, 6-bolt | Torque: 1,090 kg-m | Max. speed: 10,300 rpm | Max. bore: 133 mm
E4-20 Type: E4, 6-bolt | Torque: 1,820 kg-m | Max. speed: 9,200 rpm | Max. bore: 152 mm
E4-25 Type: E4, 6-bolt | Torque: 2,690 kg-m | Max. speed: 8,500 rpm | Max. bore: 165 mm
E4-30 Type: E4, 6-bolt | Torque: 3,410 kg-m | Max. speed: 7,800 rpm | Max. bore: 178 mm
E4-35 Type: E4, 6-bolt | Torque: 4,070 kg-m | Max. speed: 7,200 rpm | Max. bore: 187 mm
E4-40 Type: E4, 6-bolt | Torque: 4,720 kg-m | Max. speed: 6,800 rpm | Max. bore: 205 mm
E4-45 Type: E4, 6-bolt | Torque: 6,100 kg-m | Max. speed: 6,200 rpm | Max. bore: 231 mm
E4-50 Type: E4, 6-bolt | Torque: 7,620 kg-m | Max. speed: 5,700 rpm | Max. bore: 254 mm
E4-55 Type: E4, 6-bolt | Torque: 9,440 kg-m | Max. speed: 5,400 rpm | Max. bore: 263 mm
E4-60 Type: E4, 6-bolt | Torque: 10,890 kg-m | Max. speed: 5,000 rpm | Max. bore: 275 mm
E4-65 Type: E4, 6-bolt | Torque: 13,070 kg-m | Max. speed: 4,800 rpm | Max. bore: 289 mm
G4-01 Type: G4, 8-bolt | Torque: 392 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
G4-03 Type: G4, 8-bolt | Torque: 726 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
G4-05 Type: G4, 8-bolt | Torque: 915 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
G4-10 Type: G4, 8-bolt | Torque: 1,100 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
G4-15 Type: G4, 8-bolt | Torque: 1,570 kg-m | Max. speed: 10,300 rpm | Max. bore: 133 mm
G4-20 Type: G4, 8-bolt | Torque: 2,610 kg-m | Max. speed: 9,200 rpm | Max. bore: 152 mm
G4-25 Type: G4, 8-bolt | Torque: 3,850 kg-m | Max. speed: 8,500 rpm | Max. bore: 165 mm
G4-30 Type: G4, 8-bolt | Torque: 4,810 kg-m | Max. speed: 7,800 rpm | Max. bore: 178 mm
G4-35 Type: G4, 8-bolt | Torque: 5,820 kg-m | Max. speed: 7,200 rpm | Max. bore: 187 mm
G4-40 Type: G4, 8-bolt | Torque: 6,570 kg-m | Max. speed: 6,800 rpm | Max. bore: 205 mm
G4-45 Type: G4, 8-bolt | Torque: 8,530 kg-m | Max. speed: 6,200 rpm | Max. bore: 231 mm
G4-50 Type: G4, 8-bolt | Torque: 10,530 kg-m | Max. speed: 5,700 rpm | Max. bore: 254 mm
G4-55 Type: G4, 8-bolt | Torque: 13,070 kg-m | Max. speed: 5,400 rpm | Max. bore: 263 mm
Shaft CouplingJAC
64 product codes available in this family
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JAC Disc Coupling (A3, A4, Ax, E4, G4 Types)

Brand JAC·Shaft Coupling

Available part numbers (64)

A3-05, A3-10, A3-15, A3-20, A3-25, A3-30, A3-35, A3-40, A3-45, A3-50 + 54 more — see full table ↓

How to order

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Product codeSpec
A3-05Type: A3, 4-bolt | Torque: 3.4 kg-m | Max. speed: 47,000 rpm | Max. bore: 22 mm
A3-10Type: A3, 4-bolt | Torque: 9.2 kg-m | Max. speed: 39,000 rpm | Max. bore: 32 mm
A3-15Type: A3, 4-bolt | Torque: 18 kg-m | Max. speed: 34,000 rpm | Max. bore: 35 mm
A3-20Type: A3, 4-bolt | Torque: 25 kg-m | Max. speed: 30,000 rpm | Max. bore: 42 mm
A3-25Type: A3, 4-bolt | Torque: 43 kg-m | Max. speed: 25,000 rpm | Max. bore: 50 mm
A3-30Type: A3, 4-bolt | Torque: 79 kg-m | Max. speed: 22,000 rpm | Max. bore: 60 mm
A3-35Type: A3, 4-bolt | Torque: 130 kg-m | Max. speed: 19,000 rpm | Max. bore: 72 mm
A3-40Type: A3, 4-bolt | Torque: 210 kg-m | Max. speed: 16,000 rpm | Max. bore: 82 mm
A3-45Type: A3, 4-bolt | Torque: 340 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
A3-50Type: A3, 4-bolt | Torque: 500 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
A3-55Type: A3, 4-bolt | Torque: 650 kg-m | Max. speed: 11,000 rpm | Max. bore: 118 mm
A4-05Type: A4 standard spacer | Torque: 3.4 kg-m | Max. speed: 47,000 rpm | Max. bore: 22 mm
A4-10Type: A4 standard spacer | Torque: 9.2 kg-m | Max. speed: 39,000 rpm | Max. bore: 32 mm
A4-15Type: A4 standard spacer | Torque: 18 kg-m | Max. speed: 34,000 rpm | Max. bore: 35 mm
A4-20Type: A4 standard spacer | Torque: 25 kg-m | Max. speed: 30,000 rpm | Max. bore: 42 mm
A4-25Type: A4 standard spacer | Torque: 43 kg-m | Max. speed: 25,000 rpm | Max. bore: 50 mm
A4-30Type: A4 standard spacer | Torque: 79 kg-m | Max. speed: 22,000 rpm | Max. bore: 60 mm
A4-35Type: A4 standard spacer | Torque: 130 kg-m | Max. speed: 19,000 rpm | Max. bore: 72 mm
A4-40Type: A4 standard spacer | Torque: 210 kg-m | Max. speed: 6,000 rpm | Max. bore: 82 mm
A4-45Type: A4 standard spacer | Torque: 340 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
A4-50Type: A4 standard spacer | Torque: 500 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
A4-55Type: A4 standard spacer | Torque: 650 kg-m | Max. speed: 11,000 rpm | Max. bore: 118 mm
AX-05Type: Ax short spacer | Torque: 3.4 kg-m | Max. speed: 47,000 rpm | Max. bore: 22 mm
AX-10Type: Ax short spacer | Torque: 9.2 kg-m | Max. speed: 39,000 rpm | Max. bore: 32 mm
AX-15Type: Ax short spacer | Torque: 18 kg-m | Max. speed: 34,000 rpm | Max. bore: 35 mm
AX-20Type: Ax short spacer | Torque: 25 kg-m | Max. speed: 30,000 rpm | Max. bore: 42 mm
AX-25Type: Ax short spacer | Torque: 43 kg-m | Max. speed: 25,000 rpm | Max. bore: 50 mm
AX-30Type: Ax short spacer | Torque: 79 kg-m | Max. speed: 22,000 rpm | Max. bore: 60 mm
AX-35Type: Ax short spacer | Torque: 130 kg-m | Max. speed: 19,000 rpm | Max. bore: 72 mm
AX-40Type: Ax short spacer | Torque: 210 kg-m | Max. speed: 6,000 rpm | Max. bore: 82 mm
AX-45Type: Ax short spacer | Torque: 340 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
AX-50Type: Ax short spacer | Torque: 500 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
AX-55Type: Ax short spacer | Torque: 650 kg-m | Max. speed: 11,000 rpm | Max. bore: 118 mm
E4-00Type: E4, 6-bolt | Torque: 58 kg-m | Max. speed: 26,000 rpm | Max. bore: 51 mm
E4-01Type: E4, 6-bolt | Torque: 94 kg-m | Max. speed: 23,000 rpm | Max. bore: 55 mm
E4-02Type: E4, 6-bolt | Torque: 174 kg-m | Max. speed: 19,000 rpm | Max. bore: 67 mm
E4-03Type: E4, 6-bolt | Torque: 341 kg-m | Max. speed: 17,000 rpm | Max. bore: 72 mm
E4-04Type: E4, 6-bolt | Torque: 633 kg-m | Max. speed: 15,000 rpm | Max. bore: 85 mm
E4-05Type: E4, 6-bolt | Torque: 620 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
E4-10Type: E4, 6-bolt | Torque: 840 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
E4-15Type: E4, 6-bolt | Torque: 1,090 kg-m | Max. speed: 10,300 rpm | Max. bore: 133 mm
E4-20Type: E4, 6-bolt | Torque: 1,820 kg-m | Max. speed: 9,200 rpm | Max. bore: 152 mm
E4-25Type: E4, 6-bolt | Torque: 2,690 kg-m | Max. speed: 8,500 rpm | Max. bore: 165 mm
E4-30Type: E4, 6-bolt | Torque: 3,410 kg-m | Max. speed: 7,800 rpm | Max. bore: 178 mm
E4-35Type: E4, 6-bolt | Torque: 4,070 kg-m | Max. speed: 7,200 rpm | Max. bore: 187 mm
E4-40Type: E4, 6-bolt | Torque: 4,720 kg-m | Max. speed: 6,800 rpm | Max. bore: 205 mm
E4-45Type: E4, 6-bolt | Torque: 6,100 kg-m | Max. speed: 6,200 rpm | Max. bore: 231 mm
E4-50Type: E4, 6-bolt | Torque: 7,620 kg-m | Max. speed: 5,700 rpm | Max. bore: 254 mm
E4-55Type: E4, 6-bolt | Torque: 9,440 kg-m | Max. speed: 5,400 rpm | Max. bore: 263 mm
E4-60Type: E4, 6-bolt | Torque: 10,890 kg-m | Max. speed: 5,000 rpm | Max. bore: 275 mm
E4-65Type: E4, 6-bolt | Torque: 13,070 kg-m | Max. speed: 4,800 rpm | Max. bore: 289 mm
G4-01Type: G4, 8-bolt | Torque: 392 kg-m | Max. speed: 15,000 rpm | Max. bore: 95 mm
G4-03Type: G4, 8-bolt | Torque: 726 kg-m | Max. speed: 13,000 rpm | Max. bore: 108 mm
G4-05Type: G4, 8-bolt | Torque: 915 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
G4-10Type: G4, 8-bolt | Torque: 1,100 kg-m | Max. speed: 11,600 rpm | Max. bore: 111 mm
G4-15Type: G4, 8-bolt | Torque: 1,570 kg-m | Max. speed: 10,300 rpm | Max. bore: 133 mm
G4-20Type: G4, 8-bolt | Torque: 2,610 kg-m | Max. speed: 9,200 rpm | Max. bore: 152 mm
G4-25Type: G4, 8-bolt | Torque: 3,850 kg-m | Max. speed: 8,500 rpm | Max. bore: 165 mm
G4-30Type: G4, 8-bolt | Torque: 4,810 kg-m | Max. speed: 7,800 rpm | Max. bore: 178 mm
G4-35Type: G4, 8-bolt | Torque: 5,820 kg-m | Max. speed: 7,200 rpm | Max. bore: 187 mm
G4-40Type: G4, 8-bolt | Torque: 6,570 kg-m | Max. speed: 6,800 rpm | Max. bore: 205 mm
G4-45Type: G4, 8-bolt | Torque: 8,530 kg-m | Max. speed: 6,200 rpm | Max. bore: 231 mm
G4-50Type: G4, 8-bolt | Torque: 10,530 kg-m | Max. speed: 5,700 rpm | Max. bore: 254 mm
G4-55Type: G4, 8-bolt | Torque: 13,070 kg-m | Max. speed: 5,400 rpm | Max. bore: 263 mm

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