三一重工 STC 500

### SANY STC500 – 50 Ton Truck Crane #### 1. Lifting Performance - **Max. Lifting Capacity**: **50 t @ 3 m radius** - **Counterweight**: **4.8 t** (old standard, not 8.5 t) - **Max. Lifting Moment**: **1,788 kN·m** - **Main Boom**: 5-section, **11.5 m – 42.5 m** - **Jib**: **15 m** (optional, older version) - **Max. Lifting Height**: - Main boom only: **42.8 m** - Main boom + jib: **58.8 m** - **Min. Working Radius**: **3 m** #### 2. Engine & Chassis - **Engine Model**: **DF Cummins ISLe340 30** (Euro III / China III) - **Rated Power**: **250 kW @ 2,100 rpm** - **Max. Torque**: **1,425 N·m @ 1,100–1,400 rpm** - **Wheel Formula**: **8×4×4** - **Transmission**: **9-speed synchronized** - **Max. Travel Speed**: **85 km/h** - **Max. Gradeability**: **40%** - **Fuel Tank Capacity**: **300 L** #### 3. Dimensions & Weight - **Overall Length**: **13,750 mm** - **Overall Width**: **2,750 mm** - **Overall Height**: **3,650 mm** - **Total Weight**: **55,000 kg** (old version, heavier) - **Min. Ground Clearance**: **243 mm** - **Min. Turning Radius**: **11 m** #### 4. Hydraulic & Boom - **Main Pump**: Variable axial piston pump - **Relief Pressure**: **31.5 MPa** - **Boom Elevation Time**: **55 s** (up) - **Swing Speed**: **0–2 rpm** - **Rope Speed (Main Hoist)**: **130 m/min** #### 5. Key Differences from Newer STC500C5 - Counterweight: **4.8 t (old)** vs **8.5 t (new)** - Main boom: **42.5 m (old)** vs **44 m (new)** - Total weight: **55 t (old)** vs **42.8 t (new)** - Travel speed: **85 km/h (old)** vs **90 km/h (new)**