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7. UNDERCARRIAGE
7. UNDERCARRIAGE
TRACKS
TRACKS
X-leg type center frame is integrally welded with reinforced box-section track frames. The design
includes dry tracks, lubricated rollers, idlers, sprockets, hydraulic track adjusters with shock absorb-
ing springs and assembled track-type tractor shoes with triple grousers.
TYPES OF SHOES
TYPES OF SHOES
1)
1)
2)
2)
NUMBER OF ROLLERS AND SHOES ON EACH SIDE
NUMBER OF ROLLERS AND SHOES ON EACH SIDE
Carrier rollers
Track rollers
Track shoes
2 EA
9 EA
48 EA
Item
Quantity
3)
3)
Model
Shapes
Triple grouser
R290LC-9MH
Tilt cab
Shoe width
mm (in)
800 (32)
900 (36)
Operating weight
kg (lb)
32710 (72110)
33090 (72950)
Ground pressure
kgf/cm
2
(psi)
0.47 (6.68)
0.42 (5.97)
Overall width
mm (ft-in)
3400 (11' 1")
3500 (11' 5")
R290LC-9MH
Elevating cab
Shoe width
mm (in)
800 (32)
900 (36)
Operating weight
kg (lb)
33660 (74210)
34040 (75040)
Ground pressure
kgf/cm
2
(psi)
0.48 (6.83)
0.44 (6.26)
Overall width
mm (ft-in)
3400 (11' 1")
3500 (11' 5")