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The lowest vibration level (2.9m/²) among all Twin Hammer Impact Wrenches.


  • Advanced Twin Hammer and oil bath design to achieve more durability and higher torque.
  • The lowest noise level.
  • Powerful motor produces up to 660Nm (490 ft-lb).


  • Tyre or U-bolt setting work for truck and 2-tons truck.
  • Engine maintenance work of heavy truck.
  • Assembly/disassembly work of bridge/steel-frame building.

Catalogue (PDF)


Drive size 1/2 in. 12.7 mm
Capacity bolt size 5/8 in. 16.0 mm
Recommended torq 70-300 ft-lb 100-400 Nm
Weight(w/o socket) 3.3 lbs. 1.5 kg
Length(w/o socket) 6-3/4 in. 171.0 mm
Maximum torque 490 ft-lb 660 Nm
Free speed - 6,300 r.p.m.
Air consumption(Normal) 9.2 c.f.m. 0.26 m³/min
Hose size 1/4 in. 6.5 mm
Noise Level - 78 dB(A)
Vibration Level - 2.9 m/s²
Performance figures are at 0.62 MPa(Pe) (90P.S.I.) air pressure.

Parts List

You can download the parts list of current production.

Catalog Request,Contact US


3-6-15,Nonoue Habikino-Shi,Osaka,583-0871 KUKEN Co.,Ltd.

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