Excavating Machinery

Used Excavators for Sale for Construction, Mining & Earthmoving

Heavy-duty hydraulic excavators built for mass earthmoving, deep utility trenching, and severe-duty site preparation. Construction contractors and equipment rental fleet managers evaluate excavators based on verified electronic control module (ECM) operating hours, volumetric bucket capacity, hydraulic system pump displacement, and structural undercarriage wear metrics. Every unit undergoes line-bore measurement, multi-stage hydraulic relief pressure testing, and ultrasonic track frame inspection prior to dispatch. Direct manufacturer supply ensures precise component documentation without middleman overhead.

Komatsu Track-Type Excavator
This is Komatsu Track-Type Excavator,Compact and agile. Perfect for rural house building, orchard trenching, urban utility work, narrow sites, indoor demolition. Works great on mud, slopes, tight...
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XCMG Track Excavator
This is a used XCMG track excavator. This used excavator is well-maintained, all functions work normally, and it can start working right after purchase, very hassle-free.
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Modern Water-based Ship Excavator
This is a modern water-based amphibious excavator. It can work both on land and in water, such as rivers, fish ponds, swamps, without getting stuck.
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Product Types

Compact Mini Excavators

Units ranging from 1 to 6 metric tons featuring zero tail swing, auxiliary proportional hydraulics, and rubber tracks for restricted urban utility and landscaping deployment.

Mid-Size Utility Excavators

10 to 30 metric ton class machines equipped with heavy-duty reinforced booms, high-torque swing motors, and multi-mode electronic hydraulic controls for general civil engineering.

Heavy-Duty Mining & Earthmoving Excavators

35 to 90+ metric ton units featuring box-section welded front attachments, high-capacity dual-pump hydraulic circuits, and triple-grouser heavy track shoes for high-volume rock and soil extraction.

Key Specifications

Specification	Details
Operating Hours	Verified ECM idle-to-work ratios, total engine run hours, and active hydraulic load cycles.
Bucket Capacity	ISO 7451 heaped volumetric ratings, tooth/edge configurations, and wear-plate material thickness, with Hardox 450/500 integration options.
Hydraulic System	Main pump flow rate (L/min), maximum circuit operating pressure (bar/psi), auxiliary flow lines for attachments, and oil filtration efficiency.
Undercarriage	Track pitch, link wear percentage, sprocket tooth profile, bottom roller bushing wear, and overall track frame structural integrity.
Engine Output	Net horsepower at rated RPM, peak torque threshold, and aftertreatment architecture, including DOC/DPF/SCR systems.

Inspection & Preparation

Hydraulic Circuit Analysis

Laboratory oil sampling for contamination particulate count, viscosity stability, and pump swashplate wear indicators.

Structural Weld Audit

Magnetic particle testing (MT) and ultrasonic inspection of high-stress pivot points, boom foot pins, and arm cylinder mounting brackets.

Undercarriage Measurement

Ultrasonic testing of link bushings, pin stretch verification, and track tension cylinder hydraulic function checks.

Electronic Calibration

Diagnostic scan of main controller units, throttle potentiometer response, and hydraulic pump displacement valve calibration.

Applications

Deep Trenching & Pipeline Installation: Sustained linear excavation requiring precise bucket control, high breakout force, and steady auxiliary hydraulic flow for compaction wheels and hammers.

Mass Earthmoving & Grading: High-cycle volume loading utilizing large bucket capacities, rapid swing acceleration, and balanced track stability on uneven terrain.

Quarry & Aggregate Extraction: Severe-duty rock loading demanding heavy-duty undercarriages, reinforced rock buckets, and high-pressure hydraulic circuits resisting thermal fatigue.

How to Choose the Right Excavating Machinery

Duty Cycle & Hour Matching

Evaluate historical ECM hours against project life expectancy to balance initial capital cost with anticipated maintenance intervals.

Hydraulic Circuit Sourcing

Match main pump flow rates and auxiliary valve configurations to specific attachment requirements (e.g., hydraulic shears, rotary crushers, high-frequency breakers).

Undercarriage Selection

Choose narrow or wide track shoes (single, double, or triple grouser) based on ground-bearing pressure limits and job-site soil characteristics (muddy clay versus abrasive rock).

Why Buyers Work With Us

Verifiable Provenance

Complete ECM data dumps, original factory inspection sheets, and material test reports (MTR) provided prior to final payment.

Direct Export Preparation

Standardized heavy-machinery containerization, flat-rack lashing, and port dismantling protocols managed directly at source.

Component Standardization

Access to standardized OEM-spec replacement pin sets, seal kits, and hydraulic filter cross-reference inventories for rapid post-delivery maintenance.

Our Certifications

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FAQ

Q: How are operating hours verified prior to purchase?

A: Operating hours are verified by extracting data directly from the engine Electronic Control Module (ECM) and cross-referencing physical dashboard logs and maintenance history records.

Q: Can hydraulic auxiliary lines be customized for specific attachments?

A: Yes, dual-direction auxiliary circuits, high-flow proportional lines, and case drain connections can be pre-configured to match specialized demolition or drilling tools.

Q: What is the standard measurement method for undercarriage wear?

A: Undercarriage wear is measured using depth gauges and ultrasonic calipers on track links, bushings, rollers, and sprockets, reported as a percentage of remaining service life.

Q: What export documentation is included with each machine?

A: Each shipment includes the commercial invoice, packing list, Certificate of Origin, bill of lading, and a certified third-party technical inspection report detailing structural and mechanical status.

As one of the leading excavating machinery manufacturers and suppliers in China, we warmly welcome you to buy bulk high quality excavating machinery at low price from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.