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| 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. |
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Main Technical Parameters
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 | |||