Kubota U20-3 User Manual

U20-3, U25-3 WSM Hydraulic system (Mechanism section)
IV-M-3
B.Hydraulic system specifications
Machine model U20-3 U25-3
Engine RPM 2,200 2,400
Pump Maker Fujikoshi Fujikoshi
Type PVD-OB-24P-6G3-4694A PVD-OB-24P-8G3-4837B
Variable Displacement Pump Variable Displacement Pump
+Gear Pump +Gear Pump
Delivery rate P1, P2 23.0 L / min 28.8 L / min
P3 12.8 L / min 19.2 L / min
P
P 5.9 L / min 6.5 L / min
Control valve Maker KAYABA KAYABA
Type KVSE-36-10 KVSE-36-10
Main relief
pressure
P1, P2 21.6 MPa 21.6 MPa
P3 20.6 MPa 17.2 MPa
P
P 3.9 MPa 3.9 MPa
Swivel motor Maker Eaton Fluid Power Eaton Fluid Power
Type 25PB20A1124-C 25PB25A1125-C
VNS200S310A VNS165S320A
Equivalent capacity 195 cm
3
/rev 244 cm
3
/rev
Relief pressure 19.6 MPa 16.2 MPa
Swivel speed 8.9 rpm 9.2 rpm
Torque Theoretical 609 N·m 629 N·m
Travel motor Maker Fujikoshi KAYABA
Type PHV-190-39-1-8944A MAG-18V-230E
Equivalent capacity 628/328 cm
3
/rev 774/430 cm
3
/rev
Speed (R) 2.2/4.2 km/h 2.5/4.5 km/h
Cylinder Boom Bore dia. 65 70
Rod dia 35 40
Stroke 490 476
Arm Bore dia. 65 70
Rod dia 40 40
Stroke 450 484
Bucket Bore dia. 60 65
Rod dia 35 35
Stroke 416 416
Swing Bore dia. 60 60
Rod dia 35 35
Stroke 420 420
Dozer Bore dia. 80 90
Rod dia 40 45
Stroke 138 126
Truck Bore dia. 60 —
Rod dia 30 —
Stroke 215 —

Kubota U20-3 Specifications

General

Brand	Kubota
Model	U20-3
Category	Excavators
Language	English