Double Roller Press Granulator Bearing Maintenance

 Bearings are the core load-bearing components of a double roller press granulator, enduring high pressure, vibration, dust, and moisture over long periods. Proper maintenance significantly extends their service life and prevents downtime. Maintenance involves four main aspects: daily inspection, regular lubrication, sealing protection, and troubleshooting.

 

Before each shift, inspect the bearing housing for oil leaks, abnormal noises, and unusual temperatures. If continuous abnormal noises or localized overheating occur during operation, immediately stop the machine for inspection; do not operate with faults. Also, check the condition of the shaft end oil seals. Damaged oil seals allow fertilizer dust and moisture to enter the bearing cavity, a major cause of premature bearing failure. Replace any leaks or cracks immediately.

 

Lubrication is crucial. The equipment uses lithium-based high-temperature resistant grease. Under normal operating conditions, add grease once per shift; during periods of high dust or continuous full-load production, increase grease application to every 4 hours. The amount of grease added must be moderate. Too much grease will increase bearing operating resistance and temperature, while too little grease will prevent the formation of an effective oil film, exacerbating dry friction wear. A thorough grease change should be performed monthly, emptying the old grease and cleaning the bearing cavity.

 

Ensuring proper sealing and environmental protection is crucial. The dust covers and baffles on the outside of the bearing housing must be intact and secure to prevent powder from entering. After production, promptly clean the rollers and bearing housing surfaces to remove any fertilizer and dust, preventing corrosive materials from adhering to and damaging components over time.

 

Furthermore, regularly check the bearing housing fixing bolts to prevent vibration from causing them to loosen, leading to shaft misalignment and uneven bearing stress. Disassemble and inspect the bearing raceways and balls quarterly for wear; replace the bearing immediately if pitting or excessive clearance is found. Strictly adhering to the above maintenance procedures can more than double the bearing's service life, ensuring continuous and stable production on the roller press granulator production line





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