1-25
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
26.3
ℓ
/min (6.9 U.S. gpm/5.8 U.K. gpm)
Item
Specification
Type
10 spools
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 piston motor
Capacity
156.9 cc/rev
Relief pressure
300 kgf/cm
2
(4270 psi)
Braking system
Automatic, spring applied hydraulic released
Braking torque
84.4 kgf
·
m (610 lbf
·
ft)
Brake release pressure
36.5 kgf/cm
2
(519 psi)
Reduction gear type
2 - stage planetary
Item
Specification
Type
Variable displacement axial piston motor
Relief pressure
350 kgf/cm
2
(4980 psi)
Capacity (max / min)
282.6/156.9 cc/rev
Reduction gear type
2-stage planetary
Braking system
Automatic, spring applied hydraulic released
Brake release pressure
17 kgf/cm
2
(242 psi)
Braking torque
134 kgf
·
m (969 lbf
·
ft)
