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Note:
For full specification details see information in each section.
Pump
Type
2 stage tandem, variable capacity swash plate type axial piston pump
Displacement Volume
36 cm
3
/rev x 2 (2.196 in
3
/rev x 2)
Working Pressure
284.4 bar (4125 lbf/in
2
)
Maximum Output
79 l/min (17 U.K. gal/min)
Fixed Displacement Gear Pump
Pilot
Blade
Displacement Volume
10.7 cm
3
/rev (0.65 in
3
/rev)
12.1 cm
3
/rev (0.74 in
3
/rev)
Working Pressure
39.2 bar ( 569 lbf/in
2
)
217 bar ( 3146 lbf/in
2
)
Maximum Output
23 l/min (5 U.K. gal/min)
26 l/min (5.7 U.K. gal/min)
Total Dry weight
58kg (62 lb)
Control Valve (Main)
Type
Hydraulic Pilot System
Operating System
Set pressure relief
Main Relief
Standard Pressure
Refer to Pressure Testing Section 4-1
Auxiliary Relief Valve Pressure
Boom Raising, Dipper, Bucket
Boom Lowering Pressure
Refer to Pressure Testing Section 4-1
Function
Travel priority, Slew priority, Boom and Dipper holding valves,
Boom and Dipper 2-Speed internal confluence
Dry Weight
66 kg (145.5 lb)
Control Valve (Blade)
Type
Hydraulic Pilot System
Operating System
Set pressure relief
Main Relief
Refer to Pressure Testing Section 4-1
Auxiliary Relief Valve Pressure
Refer to Pressure Testing Section 4-1
Dry Weight
4.5 kg (9.92 lb)
Slew Motor
Type
Fixed displacement piston motor
Suction Capacity
45.5 cm
3
/rev 2.78in
3
/rev)
Working Pressure
206 bar (2987 lbf/in
2
)
Work Flow
75.6 l/min (16.63 U.K. gal/min)
Set Pressure Relief
Refer to Pressure Testing Section 4-1
Reduction Gears
Planetary gears with 2 gear reduction
Reduction Gear Ratio
19.464 : 1
Slew Brake
Brake Torque
More than 16.8 kgf m (121.5 lbf ft) (not including reduction gear)
Brake Pressure Release
Min 32.3 bar (469 lbf/in
2
)
Dry Weight
67 kg (148 lb)
1 - 1
Section E
Hydraulics
9803/6020
Section E
1 - 1
Issue 1
Technical Data
Summary of Contents for JS70
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