Bearing Lubrication for Slurry Pumps

Proper lubrication reduces friction, prevents corrosion, and extends bearing life. Methods include:
1. Drip Lubrication: For low/mid-speed bearings (<5 m/s). Adjust drip rate (3–8 sec/drop). Over-lubrication causes overheating.
2. Manual Lubrication: For light loads or intermittent use. Use filtered covers to prevent contamination.
3. Oil Ring Lubrication: For horizontal shafts (>50 mm diameter). Use one ring for width/diameter ratio <2.
4. Oil Bath Lubrication: Immerse bearings partially; oil level below the lowest roller center.
5. Circulating Oil: For high-speed bearings. Filtered oil cools and lubricates via a pump system.
6. Spray Lubrication: For high-speed/high-temperature bearings. Compressed air delivers oil mist while cooling.
Key Notes:
Maintain seal water pressure and adjust packing to prevent leaks.
Keep bearings clean; operating temp ≤ 65°C (max 75°C).
Ensure motor-pump alignment and inspect coupling elastomers regularly.
Monitor wear-prone parts and replace them promptly.
Choose lubrication methods based on speed, load, and environment to optimize pump performance and longevity.