1. Daily Maintenance Checks

A. Lubrication System Inspection

• Check oil levels, quality, and leaks in hydraulic and lubrication systems.
• Replace contaminated or degraded oil (recommended every 500-1,000 hours).
• Ensure greasing points (bearings, toggle plates) are properly lubricated.

B. Wear Parts Examination

• Inspect jaw dies, cone liners, impact blow bars, and screen meshes for wear.
• Rotate or flip wear parts (if reversible) to extend service life.
• Replace worn-out components before they fail to avoid secondary damage.

C. Belt & Drive System Check

• Look for cracks, fraying, or misalignment in conveyor belts and crusher drive belts.
• Adjust belt tension to prevent slippage or excessive wear.
• Inspect couplings, pulleys, and motors for abnormal vibrations.

D. Fasteners & Structural Integrity

• Tighten loose bolts, nuts, and foundation anchors.
• Check for cracks or deformations in the crusher frame and support structures.

2. Weekly & Monthly Maintenance

A. Bearing & Shaft Inspection

• Monitor bearing temperatures (overheating indicates lubrication issues).
• Check shaft alignment and radial/axial play.
• Replace worn bearings to prevent catastrophic failure.

B. Hydraulic System Maintenance

• Test hydraulic pressure (adjust if outside recommended range).
• Inspect hoses, cylinders, and valves for leaks or damage.
• Clean hydraulic filters to prevent clogging.

C. Crusher Chamber Cleaning

• Remove material buildup inside the crushing chamber to prevent blockages.
• Check for foreign objects (tramp metal, uncrushable debris).

D. Electrical & Control Systems

• Inspect wiring, sensors, and control panels for corrosion or loose connections.
• Test emergency stop functions and safety interlocks.

3. Quarterly & Annual Maintenance

A. Major Component Overhaul

• Replace worn-out liners, mantles, and concaves (cone crushers).
• Inspect eccentric bushings, thrust bearings, and main shafts.
• Rebuild or replace hydraulic cylinders if necessary.

B. Crusher Setting Adjustments

• Verify CSS (Closed Side Setting) for jaw and cone crushers.
• Adjust rotor speed and impact aprons for impact crushers.

C. Gearbox & Motor Servicing

• Change gearbox oil and inspect gears for wear.
• Test motor windings and insulation resistance.

D. Structural & Foundation Check

• Inspect crusher base frame for cracks or settling.
• Ensure vibration dampeners are intact.

4. Common Crusher-Specific Maintenance Tips

A. Jaw Crushers

• ✔ Check toggle plate for cracks or wear.
• ✔ Monitor jaw die wear pattern (uneven wear indicates alignment issues).

B. Cone Crushers

• ✔ Inspect bowl liner and mantle for excessive wear.
• ✔ Verify tramp release system functionality.

C. Impact Crushers

• ✔ Rotate or replace blow bars when worn to 50%.
• ✔ Check apron gap settings for optimal product size.

D. Gyratory Crushers

• ✔ Monitor spider bushing wear.
• ✔ Inspect mainshaft and eccentric for alignment.

5. Best Practices to Extend Crusher Life

• ✅ Use OEM spare parts for better compatibility.
• ✅ Train operators on proper feeding and shutdown procedures.
• ✅ Keep detailed maintenance logs to track wear patterns.
• ✅ Schedule preventive maintenance instead of reactive repairs.

A well-maintained quarry crusher reduces downtime, lowers repair costs, and improves production efficiency. Following a structured maintenance plan—daily checks, weekly inspections, and annual overhauls—ensures optimal performance.