INTRODUCTION
General specification - Main equipment
Lower component
Travel unit
Manufacturer
Nabtesco Corporation
Motor type
Variable displacement piston motor
Automatic 2-speed switchover with parking brake
Intake amount
290.7 – 170.1 cm³/rev
(
17.740 – 10.380 in³/rev
)
Operating pressure
34.3 MPa
(
4975 psi
)
Operating flow
360.4 l/min
(
360.4000 US gpm
)
Brake torque
71012.16 N·m
(
52375.88 lb ft
) min. (including reduction gear)
Relief valve set pressure
35.8 – 37.8 MPa
(
5192.790 – 5482.890 psi
)
Automatic 2-speed switch over pressure
26.5 MPa
(
3844 psi
)
Reduction gear
Reduction gear type
Planetary gear 2-stage reduction gear
Reduction ratio
60.652
Dry weight
613 kg
(
1351.434 lb
)
Take-up roller
Weight
262.9 kg
(
579.5953 lb
)
Upper roller
Weight
42.1 kg
(
92.8146 lb
)
Lower roller
Weight
82.3 kg
(
181.4404 lb
)
Recoil spring
Item
Weight
Quantity
Yoke
51 kg
(
112.4358 lb
)
1
Sems B
M16
X
50
0.5 kg
(
1.1023 lb
)
4
Threaded rod
66.3 kg
(
146.1665 lb
)
1
Groove height N
M76
X
6
3.3 kg
(
7.2753 lb
)
1
SP pin 10 x 100
0.1 kg
(
0.2205 lb
)
1
Recoil spring
147.2 kg
(
324.5204 lb
)
1
Grease cylinder assembly
62.2 kg
(
137.1275 lb
)
1
Sems B
M16
X
70
0.3 kg
(
0.6614 lb
)
2
Assembly (total)
340.6 kg
(
750.9 lb
)
Mounting length of spring
740 mm
(
29.13 in
)
Shoe
Applicability 490 Standard
Weight or Quantity
600 grouser
2427 kg
(
5350.619 lb
)
Link
1 set
Shoe
47
Bolt
188
Nut
188
750 grouser
2753 kg
(
6069.326 lb
)
Link
1 set
Shoe
47
Bolt
188
Nut
188
48098399 20/01/2017
30
Summary of Contents for CX490C
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