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Overview
55Ton Large‑Mining Crawler Excavator
Brief Overview This 55‑ton large mining‑grade crawler excavator is powered by Cummins QSM11 diesel engine, adopting negative‑flow hydraulic system. Bucket capacity ranges from 2.5‑3.5 m³. With tremendous digging and tractive force, it is specially built for open‑pit mining, heavy quarry and large‑volume earth‑moving projects.
Key Features
✅ High‑Output Cummins QSM11 Mining Engine Cummins QSM11 industrial diesel engine, rated power 298 kW @1800 rpm. Strong torque output to sustain continuous heavy‑load mining operation, supported by worldwide spare‑parts supply network.
✅ Negative‑Flow High‑Efficient Hydraulic System Advanced negative‑flow control hydraulic system with large total flow. Max bucket digging force reaches 328 kN and maximum tractive force 349 kN. Delivers fast, smooth combined movements for high‑efficiency rock excavation and loading.
✅ Heavy‑Duty Mining‑Spec Undercarriage & Structure Heavy‑duty reinforced chassis and boom‑arm assembly for mining harsh conditions. 70% gradeability for slope operation. Optimized structural strength to resist impact and abrasion in quarry sites.
✅ Optimized for Long‑Duration Site Work Large‑volume fuel & hydraulic oil tanks support long continuous shifts. Well‑arranged component layout shortens inspection and maintenance time, reduces total operating cost.
Application Scenarios
‑ Open‑pit mine excavation & material loading ‑ Large‑scale quarry rock mining ‑ Mass earth‑moving and stockpile handling ‑ Dam & large‑scale infrastructure construction ‑ Heavy‑duty mine site development projects
Main Technical Specifications
| Item | Parameter |
|---|---|
| Operating Weight | 55900 kg |
| Engine Model | Cummins QSM11 |
| Rated Power | 298 kW @1800 rpm |
| Bucket Capacity | 2.5‑3.5 m³ |
| Bucket Digging Force | 328 kN |
| Max Tractive Force | 349 kN |
| System Working Pressure | 34.3 MPa |
| Swing Speed | 10.4 r/min |
| Travel Speed | 3.55‑6.1 km/h |
| Track Shoe Width | 600 mm |
| Fuel Tank Capacity | 630 L |
Customizable Options
‑ Air‑conditioned heavy‑duty operator cabin ‑ Quick coupler for hydraulic breaker, grapple attachments ‑ Heavy‑duty mining rock bucket / general‑purpose bucket
Packing, Lead Time & Warranty
‑ Packing: Container shipment with heavy‑duty steel securing fixtures ‑ Lead Time: 20‑30 working days upon deposit receipt ‑ Payment Terms: T/T, L/C at sight are acceptable ‑ Warranty: 12 months or 2000 working hours (whichever comes first). Long‑term spare‑parts supply available.
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Power system
Equipped with Cummins QSM11 engine, outputting 298kW(400HP), energy‑saving with low maintenance cost. High torque reserve ensures steady output under heavy load. Negative‑flow hydraulic system delivers stable hydraulic power, extending service life of the 400HP power assembly.
Work adaptability
Rugged proven chassis adapts to various harsh heavy‑load working conditions, delivering high‑efficiency performance matched with 400HP power. Optimized track structure brings stable movement and outstanding trafficability. Fitted with 2.5‑3.5 m³ adjustable‑range bucket. Powerful digging and dumping capacity gives full play to 400HP power for diverse site operations.
Transmission System
Transmission well matches 400HP engine power curve for broad high‑efficiency working range and high power transfer efficiency. Robust negative‑flow hydraulic drive system features stable and reliable performance for long‑term 400HP power load.
