Greenlee H8508-1V


Hyd Impact Wrench, 7/16 Hex, 80-400 ft-lb

H8508-1V 1377494
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ItemHydraulic Impact Wrench
Hydraulic System TypeOpen Center or Closed Center
StylePistol Grip
Chuck Size (In.)7/16 Hex
Min. Torque80 ft.-lb.
Max. Torque400 ft.-lb.
RPM @ 8 GPM6500
Pressure Port3/4"-16 SAE O-Ring
Return Port3/4"-16 SAE O-Ring
Min. Flow (GPM)5
Recommended Hydraulic Flow7 gpm
Max. Flow GPM10
Recommended Filtration (microns)10
Max. Pressure (PSI)2500 psi
Relief Valve PSI Setting2500 psi
Max. Back Pressure200 psi
Max. Oil Temp.140 Degrees F
Viscosity (SUS @ 100 F)140 to 225
Viscosity (SUS @210 F)40 min.
Weight7.7 lb.
Includes 7/16 Hex x 1/2" Square Drive Quick Change Adaptor


Hydraulic Impact Wrench, Hydraulic System Type Open Center or Closed Center, Style Pistol Grip, Anvil Standard, Chuck Size (In.) 7/16 Hex, Min. Torque 80 ft.-lb., Max. Torque 400 ft.-lb., RPM @ 8 GPM 6500, Pressure Port 3/4 In.-16 SAE O-Ring, Return Port 3/4 In.-16 SAE O-Ring, Min. Flow (GPM) 5, Recommended Hydraulic Flow 7 gpm, Max. Flow GPM 10, Recommended Filtration (microns) 10, Max. Pressure (PSI) 2500 psi, Relief Valve PSI Setting 2500 psi, Max. Back Pressure 200 psi

1/2" Hydraulic Impact Wrenches
  • Twin-hammer impact mechanism can be used for high-speed drilling, bolting, and fastener driving. 1-pc. handle has single-button forward and reverse. 3/4-16 SAE O-ring ports. 5NWJ3 includes 7/16" hex x 1/2" square drive quick-change adapter. 16V989 includes 7/16" hex quick-change chuck and heavy-duty adapter. Wrenches require Portable Hydraulic Power Unit, sold separately on page 3863.
  • Max. pressure: 2500 psi Max. flow: 10 gpm

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