1-26
TRAVEL MOTOR
GEAR PUMP
MAIN CONTROL VALVE
SWING MOTOR
6)
3)
4)
5)
[ ] : Power boost
Item
Specification
Type
Fixed displacement gear pump single stage
Capacity
15cc/rev
Maximum pressure
40 kgf/cm
2
(570 psi)
Rated oil flow
31.5
˶
/min (8.3 U.S. gpm / 6.9 U.K. gpm)
Item
Specification
Type
11 spools two-block
Operating method
Hydraulic pilot system
Main relief valve pressure
350 kgf/cm
2
(4980 psi)[380 kgf/cm
2
(5400 psi)]
Overload relief valve pressure
400 kgf/cm
2
(5690 psi)
Item
Specification
Type
Axial pistons motor
Capacity
142.8 cc/rev
Relief pressure
285 kgf/cm
2
(4053 psi)
Braking system
Automatic, spring applied hydraulic released
Braking torque
66.5 kgf
Â
m (481 lbf
Â
ft)
Brake release pressure
22.3~36.6 kgf/cm
2
(317~521 psi)
Reduction gear type
2 - stage planetary
Item
Specification
Type
Two speed axial pistons motor with
brake valve and parking brake
Relief pressure
350 kgf/cm
2
(4980 psi)
Reduction gear type
Planetary & differential type
Braking system
Automatic, spring applied hydraulic released
Brake release pressure
11 kgf/cm
2
(156 psi)
Braking torque
49.3 kgf
Â
m (357 lbf
Â
ft)