Dual Pressure Relief Hydraulic Shock Absorbing WEQ50 Coupling For Mine Dump, Oversize & Fuel Tank Semi-Trailer For Heavy Haulage

USD $444.00 / Pieces

Min. Order: 1 Pieces

280:: Horizontal traction force rating 280kN
140:: Compression & braking load rating 140kN
1000:: Max vertical static support load 1000kg
75:: Vertical dynamic impact load 75kN

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Product Features & Applications

Flagship heavy-duty hydraulic WEQ50 drawbar coupler, fully forged ultra-thick cast steel housing with dual red pressure relief safety locks. Rated traction 280kN, compression braking load 140kN, vertical dynamic load 75kN, static vertical support 1000kg, compatible with 150-ton mine, oversize and hazardous fuel tank trailers. Multi-layer composite hydraulic shock absorber, excellent impact resistance, anti-drop and vibration reduction performance, designed for open-pit mine and cross-border long-distance heavy haulage, fits high-power heavy HOWO & SHACMAN tractors. Unit price 3000 RMB, full container bulk supply for export.

1. Structure & Manufacturing Process

Fully forged integrated cast steel body without split welds for outstanding tensile, compression and tear resistance. Dual red pressure relief safety valves provide double lock protection to avoid accidental unhooking under bumpy roads or emergency braking. Built-in multi-layer hydraulic-rubber composite shock absorber absorbs all-direction impact to protect drawbar, frame and axles. Wide arc guard plate prevents ore and stone impact damage to ball joint. Multi-size standard mounting flange fits all heavy drawbars, complete high-pressure sealing and wear-resistant ball joint kits included.

2. Heavy Load Performance Advantages

280kN horizontal traction & 140kN compression braking load, top-level capacity superior to WEQ40E, WEQ40F, WEQ45 series;
75kN vertical dynamic load resists continuous impact on uphill, downhill and rough mine roads without deformation;
1000kg vertical static support load meets long-time parking demand of heavy trailers;
58kg heavy net weight ensures structural stability, no shaking or offset during heavy haulage;
Fully sealed dustproof & waterproof structure works stably in mine dust, rain, snow and mud, no oil leakage or jamming.

3. Application & Compatible Tractors

Domestic: 120–150 ton dump semi-trailers for large open coal & metal mines, oversize equipment flatbed transport, heavy hazardous fuel tank semi-trailers, port heavy transfer flatbed trailers.

Export: Cross-border long-distance heavy ore & earthwork transport for open mines in Mongolia and Central Asia.

Tractor Compatibility: 700HP+ 6×4 / 8×4 heavy-duty HOWO & SHACMAN tractor units.

4. Supply & After-Sales Service

Retail price 3000 RMB per unit, tiered discount for bulk orders. Triple strict factory inspection for tensile force, hydraulic tightness and lock reliability before delivery. Nationwide domestic logistics, full tractor+trailer package export service available. 12-month warranty for main cast steel housing and hydraulic assembly, long-term stable supply of original spare parts.