Maintenance Strategy — A Three-Tier Approach
Best-practice mining plant maintenance uses a three-tier strategy: (1) Preventive maintenance — scheduled inspections, lubrication, and wear-part replacement driven by equipment operating hours and condition; (2) Predictive maintenance — vibration monitoring, thermography, oil analysis and motor current analysis to detect incipient failures; and (3) Corrective maintenance — efficient, well-planned response to equipment failures.
WSHT helps customers implement this three-tier strategy through maintenance manuals, recommended spare parts lists, training, and remote monitoring support.
Key Crusher Wear Parts and Replacement Planning
Crusher wear parts (jaw plates, cone mantles and concaves, impact crusher blow bars, rotor tip liners) account for a large share of an operation's maintenance cost. Best practice includes: tracking wear-part life by tons processed and operating hours, maintaining adequate spare parts inventory, planning change-outs to coincide with planned shutdowns, and evaluating alternative materials (high-manganese steel, martensitic steel, alloyed irons) for specific applications.
WSHT supplies original-manufacturer wear parts and provides material selection guidance for each application.
Bearing Reliability and Lubrication Excellence
Bearing failure is the single biggest cause of unplanned crusher downtime. Best practice bearing care includes: correct lubricant selection, proper grease volume and relubrication frequency, contamination control (seals, breathers, filtration), regular temperature and vibration monitoring, and timely replacement at recommended intervals.
For large crusher bearings, WSHT recommends installing continuous vibration and temperature monitoring to detect early warning signs of bearing distress.
Screen Performance and Wear-Part Management
Vibrating screens are a critical bottleneck in many crushing circuits. Best screen maintenance practices include: routine inspection of screen panels / media for wear and blinding, regular tightening of structural fasteners, monitoring of drive / vibrator bearing condition, timely replacement of worn springs and rubber buffers, and attention to screen feed distribution and material bed depth.
Screen media selection (rubber vs. polyurethane vs. steel wire mesh) strongly affects media life and screening efficiency and should be matched to the application.
Spare Parts Strategy and Inventory Management
A sound spare parts strategy balances availability and cost. Best practice distinguishes between fast-moving wear parts (jaw plates, blow bars, screen media, belt cleaners), slow-moving critical spares (bearings, gearboxes, hydraulic cylinders, motors) and insurance spares (major structural components). WSHT helps customers establish recommended spare parts lists and stocking levels based on our own field experience.
Regional spare parts warehouses and WSHT's direct spare parts supply capability reduce delivery lead times and support fast equipment repair.
