Mining Equipment Buyer Guide

• Used pricing ranges from $250,000 for mid-sized production support machines to upwards of $4,500,000 for late-model ultra-class excavators and haulers.
• Operating weights range from 50 metric tons on support equipment to over 800 metric tons on primary production hydraulic shovels.
• Structural chassis life can exceed 80,000 to 100,000 operational hours when supported by disciplined 15,000-to-20,000-hour planned component rebuild cycles.
• Fuel burn rates vary drastically from 15 to 30 gallons per hour on quarry-spec wheel loaders to over 100 gallons per hour on 400-ton haul trucks.
• Common working tools include severe-duty rock buckets, high-abrasion wear packages, variable-pitch rippers, and high-capacity rock dump bodies.
• Primary applications cover open-pit metal extraction, coal stripping, high-volume aggregate production, and heavy industrial site development.

• 1Scan primary structural welds across the boom foot, stick, track frames, and truck chassis torque tubes for fatigue cracking or non-OEM stress gusseting.
• 2Review particle counts (ISO 4406 clean codes) and case-drain discharge rates on primary hydraulic pumps and swing drives for early internal failure signs.
• 3Measure undercarriage component life on tracked units, focusing on track chain link height, bushing external wear, roller scalloping, and sprocket segment wear.
• 4Examine large-bore suspension cylinders (struts) on haul trucks for nitrogen-oil cross-contamination, cylinder rod chrome scoring, and barrel weeping.
• 5Inspect giant off-the-road (OTR) tires for deep rock cuts, casing bead separation, and uneven wear, as replacement sets can exceed $40,000 per wheel position.
• 6Download machine payload management and onboard telematics logs (e.g., Cat VIMS, Komatsu KOMTRAX Plus) to identify cumulative overload occurrences and severe overheat events.
• 7Inspect pin-and-bushing clearance tolerances on high-load pivot points, looking for ovalized bores, failed auto-grease injectors, and galling.
• 8Verify certified maintenance records for mandatory factory powertrain and structural rebuild milestones against actual indicated hour meters.
• 9Test certified fire suppression systems (e.g., Ansul, Fogmaker) to confirm bottle hydrostatic certification dates, sensor cabling integrity, and discharge readiness.

Commonly-reported issues from operators and technicians. Every machine varies — always inspect before you buy.