EARLY FAILURE

Causes:

• Abnormal axial load or excessive load caused by an expanding shaft
• Shaft bending or misalignment
• Poor parallelism of inner and outer rings
• Inadequate lubrication

Preventive Measures:

• Allow the outer ring to pass with clearance to ensure free axial movement of the moving end
• Proper alignment of the shaft and bearing housing
• Review the type and quantity of lubricant

STIFFNESS

Causes:

• Darkening of the ring
• Operating above the speed limit
• Poor or incorrect lubrication

Preventive Measures:

• Check clearance and bearing internal clearance
• Review the type of bearing
• Control the selection of suitable lubricant and lubrication quantity

DAMAGE

Causes:

• Excessive interference fit
• Large bearing clearance
• Excessive shock load

Preventive Measures:

• Check interference fit tolerances
• Rectify the pah radius
• Check the load conditions

NOTCHING

Causes:

• Impact during assembly
• Contamination
• Excessive static load on the stationary bearing

Preventive Measures:

• Clean the shaft and housing
• Improve the sealing element
• Check the load conditions

FRICTION

Causes:

• Application of vibration to a stationary bearing (sudden shock load)
• Very small clearance on the pass surface

Preventive Measures:

• Place the shaft and housing during shipment
• Apply pre-load. Use oil for lubrication
• Increase tightness
• Apply oil

SLIDING

Causes:

• Excessive axial load
• Incorrect alignment of the bearing
• Poor lubrication
• Foreign matter entering and causing loosening

Preventive Measures:

• Correct your assembly
• Review load conditions
• Choose the right lubricant
• Improve the sealing element
• Avoid sharp speeds

WEAR

Causes:

• Foreign matter and corrosion
• Inadequate and incorrect lubrication

Preventive Measures:

• Improve the sealing element
• Clean the shaft and housing
• Check the type and quantity of lubricant

RUST - CORROSION

Causes:

• Incorrect storage and cleaning
• Abrasive gas, liquid, or water
• Chemical function of the lubricant

Preventive Measures:

• Check the cleaning oil
• Review the corrosion prevention method
• Improve the sealing element
• Avoid direct contact with bare hands

CREEPING

Causes:

• Insufficient tightness
• Insufficient tightened sleeve
• Insufficient surface pressure

Preventive Measures:

• Check clearances
• Tighten the sleeve