Instruction Manual

STC450C TRUCK CRANE
INTRODUCTION
STC450C TRUCK CRANE
DIMENSION
8 9
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Chassis
Transmission system
Gearbox: Manual gearbox is adopted with 9-gear and large speed ratio range applied,
which meets the requirements of low gradeability speed and high traveling speed.
Transmission shaft: With optimized arrangement of the transmission shaft, the transmission
is stable and reliable. For most optimized transmission, face-tooth coupling transmission
shaft is used with large transmission torque .
Brakes system
Air servo brakes are used for all wheels with dual-circuit brake system applied, engine is
equipped with an exhaust brake.
Brakes system includes traveling brake, parking brake, emergency brake and auxiliary
brake.
Traveling brake: All wheels use the air servo brakes and dual-circuit brake system.
Parking brake: Force driven by accumulator is applied on the third to fourth axle.
For emergency brake, accumulator is used not only for cutting-off brake but also for
emergency brake.
Auxiliary brake is exhaust brake with brake safety ensured while travelling downhill.
Suspension system
The 1st and 2nd front axles adopt plate spring suspension systems and the 3rd and 4th
rear axles adopt rubber suspension system. With 100,000 fatigue tests and optimization
of performance parameters of the front and rear suspension, the strength and comfort are
ensured.
Steering system
Hydraulic power mechanical steering systems are applied for axles 1 and 2 with unloading
valve installed in the steering gear.
Outriggers
Four-point supporting of the H-shaped outriggers ensures easy operation and strong
stability with max. span up to 6m×7.2m. They are made of fi ne-grain high-strength steel
sheet with horizontal single-cylinder rope line telescoping for fi rst and second outriggers.
Vertical cylinder of outrigger adopts bi- directional hydraulic locks to improve safety.
Tyres
11.00R20
Electrical system
With 2*12V maintenance-free batteries, the crane power can be cut off manually via
a mechanical master power switch. The use of CAN-bus control system can achieve
information interaction between superstructure and undercarriage.
13600
2620
R13070
R13656
R11750
1525 1450 4200 1350
R3950
2310
3286
1609
1482
3810
18.5°
12°
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