Main Specifications Of Hydraulic Components - Kubota KX080-3 Workshop Manual

WSM KX080-3 Mechanism
b. Main specifications of hydraulic components
No. Hydraulic component
1 Pump
2 Control valve
3 Travel motor
4 Swivel motor
5 Boom cylinder
6 Arm cylinder
7 Bucket cylinder
8 Swing cylinder
9 Dozer cylinder
Maker
RD809-6111 KYB
RD809-6113 KYB
RD809-6129 Nabtesco
RD809-6128 KYB
RD809-6750 KYB
RD809-6760 KYB
RD809-6780 KYB
RD809-6740 Koretsune Seiko 110 x 60 x 715
RD809-7510 Koretsune Seiko 125 x 65 x 250
IV-M-4
Main specifications
36 cc x 2 + 33 + 8.1 cc/rev
72 x 2 + 67 + 16 L/min (19.0 x + 17.7 + 4.23 GPM)
LS control valve: Differential pressure 1.5 MPa, 15.3 kgf/cm
218 psi
PC horsepower control valve: With P3 horsepower shift
Rated speed: 2000 rpm
LS circuit ( 18): 4-valve (monoblock)
LS circuit ( 14): 1-valve
Open circuit ( 14): 3-valve
P3 confluence valve ( 14)
Travel selector valve ( 18)
Pressure: Travel 29.4 MPa, 300 kgf/cm
attachment 27.4 MPa, 280 kgf/cm
2
P3: 20.6 MPa, 210 kgf/cm , 2987 psi
Signal detection: AI, travel control detection, LS control detection
Motor: 36.3/21.3 cc/rev
Reduction gears: RV reduction gears
Reduction ratio: 61.6
Relief: 2-stage shockless relief
Relief pressure: 30.4 MPs, 310 kgf/cm
Negative brake
Motor: 44.1 cc/rev
Reduction gears: Planetary reduction gears
Reduction ratio: 20.615
Pinion/swivel race: 13/100
Relief: Shockless relief (0.03 sec)
Relief pressure: 21.6 MPs, 220 kgf/cm
Negative brake (with timer, 5
With anti-swivel back valve
115 x 65 x 878 (cushion at rod side)
100 x 60 x 914 (cushion at both sides)
90 x 55 x 741
IV Hydraulic System
2
2
, 4267 psi, front
2
, 3983 psi
2
, 4410 psi
2
, 3129 psi
1.5 sec)
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