Designing and Manufacturing Miniature Ball Bearings
 

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Problem Cause Remedy

PROBLEM
CAUSE
REMEDY
Noise
High pitched
metallic noise
Poor lubrication
Clearance too small
Poor fitting
Excessive load
Improve lubrication
Correct clearance
Investigate mounting method and seating
Examine shaft and housing tolerances for closing effect
Low pitched
metallic noise
Brindled raceway surface
Avoid shock loads
Regular noise
Rust and damage
Flaking of raceway surface
Check and replace seals and re-lubricate
Improve lubrication and check fitting, clearance and fixing method
Irregular noise
Ingress of foreign matter
Excessive clearance
Damage and flaking of rolling element
Check and replace seals and re-lubricate
Correct clearance
Reduce loads and/or clearance
Variable noise
Variable clearance due to temperature changes
Damage to raceways
Check fits taking housing material and temperature into consideration
Improve lubrication and check fitting, clearance and fixing method
Heavy vibration
Flaking of raceway and rolling element
Ingress of foreign matter
Excessive clearance
Poor location
Improve lubrication and check fitting, clearance and fixing method
Check and replace seals and re-lubricate
Correct clearance
Ensure abutment face and fitting diameter are perpendicular
Excessive heat generation
Clearance too small
Poor location
Excessive load
Poor lubrication
Creep
Correct clearance
Ensure abutment face and fitting diameter are perpendicular
Examine shaft and housing tolerances for closing effect
Improver lubrication
Maintain recommended shaft and housing fits
Lubrication failure
Too much grease
Ingress of foreign matter
Use correct lubricant quantity
Check and replace seals and re-lubricate
 
 
 
 

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