Swing Motor; Structure & Specifications - Kubota U20-3 Workshop Manual

U20-3, U25-3 WSM
F. Swing motor
a. Structure & specifications
• Specification
Type
Displacement
Theoretical RPM
Theoretical output torque
Theoretical brake torque
Brake releasing pleasure
Shockless valve type
Releaf valve pressure
25PB20A1124-C
cc/rev
rpm
at 12.4 L / min
N·m
kgf·m
(200kgf / cm
N·m
kgf·m
MPa
kgf·m
VNS 200S 310A
MPa
2
kgf/cm
IV-M-33
Hydraulic system (Mechanism section)
U20-3
195
63.4
609
62.1
at 19.6 MPa
2
)
440
43.1
2.0
20.2
19.6
200
at 10L / min
U25-3
25PB25A1125-C
244
75.4
at 18.4 L / min
629
64.0
at 16.2 MPa
2
(165 kgf / cm )
440
43.1
2.0
20.2
VNS 165S 320A
16.2
165
at 20L / min