wheel bearing failures. improper adjustment result: large end of rollers & races are worn,...
TRANSCRIPT
![Page 1: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/1.jpg)
Wheel Bearing Failures
![Page 2: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/2.jpg)
Improper Adjustment
• RESULT: Large end of rollers & races are worn, galled and spalled.
• CAUSE: Internal clearances reduced – tight adjustment, excessive thrust.
![Page 3: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/3.jpg)
Improper Adjustment• RESULT: Large end of rollers & races are worn, galled and
spalled.
• CAUSE: Internal clearances reduced – tight adjustment, excessive thrust.
![Page 4: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/4.jpg)
Improper Adjustment• RESULT: Large end of rollers & races are worn,
galled and spalled.• CAUSE: Internal clearances reduced – tight
adjustment, excessive thrust.
![Page 5: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/5.jpg)
Improper Adjustment• RESULT: Small end of rollers & races are worn and
spalled.• CAUSE: Loose adjustment.
![Page 6: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/6.jpg)
Misalignment• RESULT: Angled wear of spalling on races.• CAUSE: Cocked installation, improper ring seating,
warped shaft.
![Page 7: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/7.jpg)
Misalignment• RESULT: Angled wear of spalling on races.• CAUSE: Cocked installation, improper ring seating,
warped shaft.
![Page 8: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/8.jpg)
Misalignment• RESULT: Large end wear opposite small end wear.• CAUSE: Cocked installation, improper ring seating,
warped shaft.
![Page 9: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/9.jpg)
Misalignment• RESULT: Large end wear opposite small end wear.• CAUSE: Cocked installation, improper ring
seating, warped shaft.
![Page 10: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/10.jpg)
Impact Loading• RESULT: Indented races that can progress to
spalling.• CAUSE: Impact load during installation or
operation.
![Page 11: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/11.jpg)
Impact Loading• RESULT: Indented races that can progress to
spalling.• CAUSE: Impact load during installation or operation.
![Page 12: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/12.jpg)
Contaminated Lubricant• RESULT: Indented and bruised races and rolling
elements that can progress to spalling.• CAUSE: Hard particles in lubricant.
![Page 13: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/13.jpg)
Contaminated Lubricant• RESULT: Indented and bruised races and rolling
elements that can progress to spalling.• CAUSE: Hard particles in lubricant.
![Page 14: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/14.jpg)
Improper Lubrication• RESULT: Frosting.• CAUSE: Oil film too thin to separate rolling
elements and races.
![Page 15: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/15.jpg)
Improper Lubrication• RESULT: Heat discoloration on rolling elements
and races.• CAUSE: Inadequate lubrication.
![Page 16: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/16.jpg)
Improper Lubrication• RESULT: Catastrophic failure.• CAUSE: Inadequate lubrication.
![Page 17: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/17.jpg)
Poor Fit in Bore and on Shaft• RESULT: Localized Spalls.• CAUSE: Unsupported outer ring – irregular
housing bore.
![Page 18: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/18.jpg)
Poor Fit in Bore and on Shaft• RESULT: Localized Spalls.• CAUSE: Unsupported outer ring – irregular
housing bore.
![Page 19: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/19.jpg)
Poor Fit in Bore and on Shaft• RESULT: inner ring cracks during installation.• CAUSE: Excessive press fit.
![Page 20: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/20.jpg)
Poor Fit in Bore and on Shaft• RESULT: Fretted (corroded) and/or polished ID or OD.
• CAUSE: Insufficient press fit on shaft or in bore.
![Page 21: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/21.jpg)
Etching• RESULT: Corrosion between rolling elements and races
that can progress to spalling.• CAUSE: Moisture.
![Page 22: Wheel Bearing Failures. Improper Adjustment RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight](https://reader035.vdocuments.us/reader035/viewer/2022062519/5697bffb1a28abf838cc0d65/html5/thumbnails/22.jpg)
Etching• RESULT: Corrosion between rolling elements and races
that can progress to spalling.• CAUSE: Moisture.