A gyratory crusher is a large, high-capacity machine used in mining and quarrying to break down massive rocks into smaller, more manageable sizes, typically through compressive and shearing forces between a rotating, truncated cone-shaped head (mantle) and a stationary bowl liner.
Here are maintenance tips for gyratory crushers based on recent information:
- Check spider bushing clearance monthly, or every 500 hours, or with every mantle change, whichever occurs first. This is critical to avoid bushing wear and damage.
- Monitor and maintain bushing lubrication levels daily, keeping the oil about 1.4 inches above the bushing flange. Use “extreme pressure” additives in the lubricant for protection.
- Inspect and keep the crusher’s lubrication system clean by checking oil condition every 8 hours and changing all oil at least once per year or every 2,000 operating hours.
- Check balance cylinders every 30 days and inspect for leaks every 40 hours.
- Follow a strict schedule for crusher backing maintenance to avoid excessive equipment damage.
- Regularly inspect safety devices and perform oil analysis monthly to detect problems early.
- Use the proper mantle for the crusher model to prevent serious damage from incorrect parts.
- Maintain a strong inspection and condition monitoring regime: track vibration trends, bearing temperatures, oil cleanliness, hydraulic pressures, and liner wear thickness.
- Address common root causes of breakdown such as misalignment, contamination, lubrication starvation, and improper liner selection.
- Standard repair and rebuild workflows should include proper disassembly, recording fits and clearances, and calibrated reassembly with correct torque.
- Lubrication is specialized; maintain oil temperatures within recommended ranges to provide necessary cooling in hot climates and warming in cold climates.
- Keep the oil circulating continuously through filters and heat or cool the oil reservoir if needed.
- Clean the crusher surroundings and remove accumulated dirt and spillage regularly.
These steps help avoid common failures like bushing wear, oil contamination, overheating, uneven mantle wear, and main shaft scoring, keeping the gyratory crusher operational and minimizing downtime.
