Cone crusheris the core equipment of mining, sandstone, building materials and other industries. Proper maintenance can significantly extend its service life and reduce downtime. This guide covers daily inspection, lubrication management, replacement of wearing parts and common fault solutions to help you manage equipment efficiently and reduce operating costs.
Why does the cone crusher need regular maintenance?
The cone crusher is in high-load and high-wear conditions for a long time. If it lacks scientific maintenance, it may lead to:
✔ Decreased efficiency – The liner wears and the discharge port becomes larger, affecting the crushing ratio and output.
✔ Sudden failure – Poor lubrication causes bearing burnout, and the downtime and maintenance costs are high.
✔ Shortened life – Key components (such as the main shaft and moving cone) are scrapped prematurely, and the replacement cost exceeds the budget.
Recommended maintenance cycle:
• Daily: Lubrication system inspection, abnormal noise monitoring
• Weekly: Tighten bolts, belt tension adjustment
• Monthly: Liner wear assessment, hydraulic system pressure test
Daily maintenance points of cone crusher
1. Lubrication system management (core!)
• Lubricant selection: Use ISO VG 220~320 high temperature resistant gear oil, and regularly test the oil quality (sample every 500 hours).
• Oil circuit inspection: Ensure that the oil pump pressure is normal (0.05~0.15MPa) and the filter is not blocked.
• Bearing lubrication: The main shaft bearing needs grease lubrication (NLGI grade 2 lithium grease is recommended), which is replenished every 8 hours.
2. Monitoring and replacement of wearing parts
• Liner wear: When the thickness wear exceeds 30% or cracks appear, it needs to be replaced.
• Check the locking nut: Prevent looseness from causing the moving cone to swing, and tighten it with a torque wrench every month.
3. Transmission system maintenance
V-belt: moderate tension (pressing sinking amount 5~8mm), multiple belts need to be replaced simultaneously.
Coupling alignment: deviation ≤0.1mm, avoid vibration transmission to the motor.
Common fault diagnosis and solution
| Fault phenomenon | Possible cause | Solution |
| Abnormal vibration of crusher | Uneven wear of liner/unbalanced spindle | Replace liner and do dynamic balance correction |
| Discharge particle size becomes larger | Wear of liner or rolling mortar wall | Adjust discharge port or replace wear-resistant parts |
| Lubricating oil temperature is too high | Oil circuit is blocked/cooler fails | Clean filter and check cooling water circulation |
Case: A large sand and gravel plant in Fujian neglected the replacement of lubricating oil, resulting in sintering of spindle bearings, and the maintenance cost exceeded 120,000 yuan - regular maintenance can avoid such losses!
5 tips to extend equipment life
1. Avoid iron overload - install a metal detector to prevent iron from entering the crushing chamber.
2. Balanced feeding - use a vibrating feeder to reduce eccentric load impact.
3. Seasonal maintenance - switch to low-temperature lubricating oil in winter.
4. Professional training - operators need to be familiar with the "Equipment Manual" click to download PDF.
5. Original accessories - poor quality liners may reduce production capacity by 20%, give priority to certified suppliers.
Scientific maintenance can extend the life of the cone crusher by 3 to 5 years! Collect this article now, or forward it to your equipment management team. If you have specific questions, please leave a message in the comment area, we will provide professional answers!
