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Chicago Pneumatic Straight Impact Wrenches

Model CP7778B-6 Straight Impact Wrench


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Model # Part # Impact Mechanism Anvil Free Speed Working Torque Max. Torque Weight Avg. Air Consumption Air Consumption at Load Sound Pressure Sound Power Vibration
in. RPM ft. lbs. Nm ft. lbs. Nm lbs. kg cfm I/s cfm I/s dB(A) dB(a) m/s2(k)
CP7778B-6 8941177786 Rocking Dog 6" 5160 440-1850 600-2500 2150 2900 25.5 11.6 10 4.8 40.7 19.2 100 111 6.5(1.6)


  • Durable — Closed reinforced rocking dog clutch
  • Extended Anvil — Extra reach
  • Perfect Control — Full teasing trigger
  • Useful — Forward/Reverse regulator with 3 positions power setting in both directions
  • Comfort — Angled down exhaust blows air away from the operator
  • Great Handling — Ergonomic handle
  • Safe — Socket retainer ring combined with hole retainer
  • Powerful — 2140 ft.lbs 2900 Nm of maximum torque in reverse


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Model # Part # Length
in mm
CP7778B-6 8941177786 20.4 520

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