Specifications; Hydraulic Schematic - Greenlee H8508 Serie Mode D'emploi

Specifications

Impact Wrench
Type of Hydraulic System .............................Open-center
Hydraulic Pressure Port .....3/4–16 UNF SAE O-ring Boss
Hydraulic Return Port ........3/4–16 UNF SAE O-ring Boss
Output @ 30.3 l/min (8 gpm)
RPM (no load) ...................................................... 6500
Impacts per Minute (no load) ............................... 1300
Torque .................................................. 542 Nm (400 ft-lb)
Drive Size .........................................1/2" square drive w/
Noise Level ............................................................85 Lwa
Mass/Weight
H8508-1 ................................................. 3.4 kg (7.4 lb)
H8508-1V ............................................... 3.5 kg (7.7 lb)
H8508-3 ................................................. 4.0 kg (8.8 lb)
H8508-3V ............................................... 4.1 kg (9.0 lb)
Length
H8508-1, 1V ...........................................208 mm (8.2")
H8508-3, 3V ...........................................221 mm (8.7")
Width ..........................................................107 mm (4.2")
Height .......................................................269 mm (10.6")
Hydraulic Power Source
Do not exceed the following hydraulic power source
maximums:
• Hydraulic flow: 38 l/min (10 gpm)
• Pressure relief: 138 bar (2000 psi)
• Back pressure: 13.8 bar (200 psi)
Failure to observe this warning could result in severe
injury or death.
Greenlee Tools, Inc.
or closed-center
7/16" hex quick-change chuck
H8508 Series Impact Wrenches
Type of Hydraulic System .............................Open-center
Flow
Minimum ......................................... 15.1 l/min (4 gpm)
Recommended .............18.9 to 30.3 l/min (5 to 8 gpm)
Maximum ......................................... 38 l/min (10 gpm)
Filtration .............................................10 Micron (nominal)
Pressure Relief Setting ........................ 138 bar (2000 psi)
Back Pressure (maximum*) .................. 13.8 bar (200 psi)
* 13.8 bar (200 psi) is the maximum agreed standard back pressure
for the HTMA (Hydraulic Tool Manufacturers Association).
Greenlee tool will operate satisfactorily at this standard.
1. Maximum hydraulic fluid temperature must not
exceed 60 °C (140 °F). A sufficient oil cooling
capacity is needed to limit the hydraulic fluid
temperature.
2. Hydraulic flow must not exceed 38 l/min (10 gpm).
Install a flow meter in the return line to measure to
rate of hydraulic flow before using the tool.
3. Pressure relief valve setting must not exceed
138 bar (2000 psi) at your tool's maximum flow.
Locate the pressure relief valve in the supply circuit
to limit excessive hydraulic pressure to the tool.

Hydraulic Schematic

RELIEF
VALVE
160 bar
RESERVOIR
(2300 psi)
CONTROL
VALVE
PUMP
POWER SOURCE
Recommended Hydraulic Fluids
Use any non-detergent, petroleum-based hydraulic
fluid which meets the following specifications or HTMA
specifications.
S.U.S. @
38 °C (100 °F) .............................................. 140 to 225
99 °C (210 °F) ........................................... 40 minimum
Flash Point ................................ 170 °C (340 °F) minimum
Pour Point .................................. -34 °C (-30 °F) minimum
6
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
or closed-center
FILTER
(10 MICRON)
COOLER
T
TOOL
FLOW METER
P