China Machinery International Trading Co., Ltd. is one of the leading manufacturers and suppliers of 300 ton mobile crane in China. With abundant experience, we warmly welcome you to buy cheap 300 ton mobile crane made in China here from our factory. For price consultation, contact us.
| Model | STC3000C8-8 |
|
Category |
Description |
|
Superstructure / Upper Structure |
|
|
Operator Cabin |
Passenger-car level comfort: full soft-trim interior, panoramic sunroof, adjustable seats; 10.1-inch display, no physical buttons, upgraded interaction. |
|
Engine |
Dongkang diesel engine, non-road Euro IV, urea-free operation. |
|
Hydraulic System |
Electro-hydraulic power pump + electronic main valve; real-time displacement adjustment; precise control of combined movements. |
|
Control System |
Integrated bus-type electrical system with all-in-one display; real-time monitoring of travel and operational parameters. |
|
Luffing / Luffing System |
Automatic lowering compensation technology; faster and smoother boom lowering. |
|
Telescopic Boom |
8-section main boom, high-strength steel, bionic waterdrop cross-section; standard jib 7.5 m; optional 2×9.5 m extension; optional portable superlift (half weight of conventional). |
|
Slewing System |
2000 mm diameter triple-row roller slewing bearing; dual reducer; closed dual-swing system; smooth, impact-free rotation. |
|
Hoisting Mechanism |
Normally-closed winch reducer; axial piston motor; anti-drop hook technology. |
|
Safety Devices |
Hydraulic relief valves, balance valves, bi-directional hydraulic locks, load moment limiter, triple-circle protector, height limiter, winch monitoring system. |
|
Counterweights |
Standard 73.5 t counterweight, adjustable rearward 1000 mm; lifting-type main + top-lifting auxiliary; up to 27.5 t transportable with machine. |
|
Chassis / Lower Structure |
|
|
Cabin |
Sany-developed, outward-opening doors; air conditioning and sleeper berth. |
|
Frame |
High-strength steel frame; honeycomb box structure; high stiffness and load capacity. |
|
Axles |
Hande axles with internal inter-axle and wheel differential; stamped-welded housing; high load capacity. |
|
Engine |
Weichai diesel engine, China VI emission standard; fuel tank 450 L. |
|
Transmission System |
12-speed Fast gearbox with hydraulic retarder. |
|
Braking System |
Air servo brakes on all wheels; dual-circuit system; includes service, parking, emergency, and auxiliary brakes. |
|
Suspension System |
Multi-axle balanced leaf spring suspension. |
|
Steering System |
Axles 1+2 hydraulic-assisted mechanical; axles 4+5 electro-hydraulic assisted. |
|
Drive System |
Axles 3, 4, 5 driven. |
|
Outriggers |
H-type 4-point support; 1st & 2nd stage fully hydraulic lateral extension; vertical cylinders with bi-directional hydraulic lock. |
|
Tires |
Full set 445/95R25. |
Main Technical Parameters
Technical Specification
|
type |
project |
unit |
parameter |
|
|
powertrain parameters |
engine type |
- |
Dongkang Q5B5.9CS4 220C |
|
|
maximum power of engine |
kW/rpm |
154/2200 |
||
|
Maximum engine output torque |
N·m/rpm |
820/4000 |
||
|
Downhill driving parameters |
engine type |
- |
Weichai WPR2.46DE62 |
|
|
maximum power of engine |
kW/rpm |
338/900 |
||
|
Maximum engine output torque |
N·m/rpm |
2200/1000-4400 |
||
|
Driving parameters |
Maximum speed |
km/h |
85 |
|
|
minimum turning radius |
m |
1175 |
||
|
angle of approach/angle of departure |
° |
≥20 / ≥13 |
||
|
maximum gradability |
- |
45% |
||
|
Fuel consumption per 100 kilometers |
L |
75 |
||
|
Key performance parameters |
maximum rated total lifting capacity |
t |
300 |
|
|
Rotation radius of the tail section of the turntable (without counterweight) |
m |
4.86 |
||
|
Revolving radius at the rear of the turntable (with 44.5-ton main counterweight at rear position) |
m |
5.89 |
||
|
Revolving radius at the tail end of the turntable (full 73.5-ton configuration rear position) |
m |
6.46 |
||
|
maximum lifting moment |
basic arm |
kN·m |
7355.8 |
|
|
longest main boom |
kN·m |
3535.8 |
||
|
Leg span (lateral × longitudinal) |
m |
8.3(5.5)×7.7 |
||
|
Lifting arm length |
basic arm |
m |
15.1 |
|
|
longest main boom |
m |
90 |
||
|
Longest main lifting arm + auxiliary lifting arm |
m |
101.5 |
||
|
Longest main lifting arm + extension arm (optional) + auxiliary lifting arm |
m |
12.05 |
||
|
axle weight |
axle |
1 |
2 |
3 |
4 |
5 |
total weight |
|
axle weight /t |
11 |
11 |
12 |
12 |
12 |
58 |
|
|
explain |
This state does not include: 4-8 main arms, main and auxiliary hooks, arm tip pulley, movable counterweight, main arm rope presser, and main arm mudguard |
||||||
|
Hook and Magnification |
specified A |
Number of pulleys |
multiplying power |
Weight of accessory hook/kg |
|
9 |
5 |
1 |
310 |
|
|
75 (double hook head) |
5 |
11 |
735 |
|
working speed |
project |
parameter |
Wire rope diameter/length |
maximum single hook pull |
|
main winch |
Single rope speed 0-135 m/min |
Φ20mm/440m |
9t |
|
|
gyration |
0-15r/min |
|||
|
Start amplitude / End amplitude |
80s/100s (70~75%) |
|||
|
Arm raise / Arm pull-down |
90s/80s (15.1m~90m) |
|||
|
Vertical leg extension/retraction |
50s/60s |
|||
|
Horizontal support leg extended/retracted |
30s/20s |
|||
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