Travel Motor (Gm Motor); Travel Motor Specifications; Motor Type; General - Kubota KX080-3 Workshop Manual

WSM KX080-3 Mechanism
G.Travel motor
a. General
1. GM motor
This product is a rotary hydraulic actuator. The reduction gears, hydraulic motor, brake valve and parking
brake are compactly integrated in this actuator. It has been developed and manufactured for construction
machinery that requires low-speed rotations and high-level torques. This product is called GM motor in this
manual.
2. Specifications

Motor type

User model
Gear ratio
Reduction gears Rating torque
Output speed
MAX. capacity
MAX. working pressure
Hyd. motor MAX. speed
Flow rate
2 speed control pressrue
Braking torque
Parking brake
Release pressure
System pressure
Note
1. One side ( D1 or D2 ) of the motor drain ports is plugged. When mounting the GM motor to the excava-
tor, connect the drain piping to the upper drain port.
2. The allowable pressure of the motor case is 0.20 MPa (2 kgf/cm
properly sized to keep the inner pressure of the motor case is not over 0.20 MPa (2 kgf/cm
Allowable surge pressure is 0.69 MPa (7 kgf/cm
3. Motor case should be filled with working oil. Use non-pluged drain port for filling. The volume of the work-
ing oil is about 0.5 L.
4. Gear case is filled in advance with oil's SAE 90 GL4.
5. For mounting GM, use bolts classified JIS B 1501 strength class 12.9. Use of lock compound on bolts
threads is recommended.
6. When neutral, the control valve should be the position of following chart.
3. Motor type
The type of motor is marked on the product label.
M 09 -
(1) (2) (3) (4)
N m
(kgf m)
r.p.m.
3
cm /rev.
MPa
(kgf/cm
r.p.m.
l/min.
MPa
(kgf/cm
N m
(kgf m)
MPa
(kgf/cm
MPa
(kgf/cm
- / 36 - 3
(5) (6)
IV-M-91
Characteristics
GM09VN-B-21/36-3
KX080-3
MAX. 75.4
Rating 8830
(900)
MAX. 60.0
MAX. 36.3
MAX. 31.38
2
) (320)
MAX. 3600
1.96 6.86
2
) (20
MIN. 97.1
(9.9)
MIN. 0.47
2
) (4.8)
2
)
2
) below. The drain piping should be
2
).
(1) Type code
(2) Size code
(3) Model code
(4) Reduction ratio code
(5) Hydraulic motor displacement rate (cm
(6) Design number (product classification number)
IV Hydraulic System
Working condition
61.6
5160/9000
(526/918)
52.7/31.6
21.3/36.3
29.4
(300)
3245/1944
72
1.96 6.86
(20 70)
97.1
(9.9)
0.47
(4.8)
29.4
(300)
2
).
Chart
P A B
P R
3
/rev.)