Hydraulic System Specifications; Specifications Of Pump - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service
B.Specifications
a.Specifications of pump
Manufacturer
Model
Kubota part No.
Rated pump rpm
Main relief
pressure
a1/a2
Main relief
Rated load pressure
pressure a4
Pilot primary
pressure a6
Main pump
P1/P2
Theoretical Main pump
discharge capacity P3
Pilot pump Pp
Main pump
P1/P2
Theoretical Main pump
discharge capacity P3
Pilot pump Pp
LS control
Differential pressure
valve
Standby flow rate
Horsepower control
Structure
Unit KX080-3
KYB Co.,Ltd.
PSVL2-36C-4
RD809-6111-0
rpm 2000
MPa 29.4
kgf/cm2
300
psi
4267
MPa 20.6
kgf/cm2
210
psi
2987
MPa 3.92
kgf/cm2 40
psi 569
cc/rev 36.0/36.0
cu.in./rev 2.20/2.20
cc/rev 33.0
cu.in./rev 2.01
cc/rev 8.1
cu.in./rev 0.49
L/min 72.0/72.0
USGPM 19.02/19.02
L/min 67.0
USGPM 17.70
L/min 16.0
USGPM 4.23
MPa 1.5
kgf/cm2 15.3
psi 218
L/min 22.0
USGPM 5.81
PC horsepower control valve : With P3 horsepower shift
Swash plate control aided by self-tilting moment(Small piston
deleted.)
P1 + P2 pressure : Average pressure by orifice
Bearing : Cradle
Shoe plate : Spherical
Large-diameter piston (with shoe)
IV-S-21
Remarks
Sprit flow of variable displacement
piston pump
Gear pump
Gear pump
Engine rpm propotional control with
P4, Idling /Rated = about 60 - 70%
Hydraulic system