Reasons for Rolling Bearing Heating and Solutions
Rolling bearings are essential components in many mechanical systems, especially in machine tools where they support rotating shafts. These bearings operate at high speeds and can generate significant heat if not properly maintained. If the heat is not managed effectively, it can lead to overheating of the bearing, which may cause thermal expansion in the machine structure. This can result in misalignment between the spindle and tailstock, affecting the machine's accuracy and potentially damaging the bearing itself. Here are the common causes of rolling bearing heating and their corresponding solutions: 1. **Low Bearing Accuracy**: Ensure that the bearing used meets the required precision standards. Always select bearings with appropriate accuracy grades for your application. 2. **Spindle Misalignment or Box Hole Mismatch**: Check and correct any misalignment in the spindle or the housing bore. Proper alignment is crucial for smooth operation. 3. **Belt Too Tight**: Adjust the belt tension to ensure it is not over-tightened. Excessive tension can increase friction and heat generation. 4. **Poor Lubrication Methods**: Use high-quality lubricants from reputable brands and follow proper lubrication procedures to maintain optimal performance. 5. **Low Installation Quality**: Ensure that the bearing is installed correctly by trained personnel. A poor installation can lead to premature failure. 6. **Inner Ring Slippage**: If the inner ring of the bearing rotates without the shaft, replace the bearing and any worn parts to restore stability. 7. **Excessive Axial Force**: Adjust the clearance between the sealing ring and the shaft, keeping it between 0.2mm and 0.3mm. Also, balance the impeller and verify its static balance to reduce vibration and heat. 8. **Bearing Damage**: Replace damaged bearings immediately to prevent further damage to the system. Proper maintenance and regular inspection can significantly extend the life of rolling bearings and improve overall machine performance. By addressing these issues promptly, you can avoid costly repairs and downtime.
Related Bearing Knowledge Understanding the importance of axial positioning in imported bearings, as well as techniques for using cast copper alloy oil bearings, tapered roller bearings, and pump shaft bearings, can greatly enhance your knowledge and application skills. This article was originally published on China Bearing Network. For more information, visit: [http://www.chinabearing.net](http://www.chinabearing.net) Previous: Metallographic Analysis of Bearing Premature Failure Next: Radial and Axial Bearings
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Typical Applications---
Water drawing tool submerging into water to work
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NP-QJ Deep Well Pump Configuration Drawing
Main Part Number At The Drawing
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1. Pump casing
2. Pump Cover 3. Impeller 4. Shaft 5. Wear Ring 6. Impeller Cap |
7. Braking Pad
8. Shaft Sleeve 9. Packing Gland 10. Seal Cage 11. Packing 12. Cantilever Bearing Assembly |
QJ DEEP WELL PUMP SELECTION CHART
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