Crusher Bearings for Mining and Aggregate Equipment

Crusher Bearing Selection

Crusher bearings operate under heavy radial load, repeated shock, abrasive dust, and variable lubrication conditions. The crusher type and exact shaft position determine the bearing arrangement.

Equipment and Bearing Positions

• Jaw-crusher pitman and eccentric shafts
• Impact-crusher rotor supports
• Cone-crusher drive and countershaft positions
• Pulley, gearbox, and auxiliary drive supports

Operating Conditions

• Shock load
• Dust and abrasive contamination
• High radial load near crusher shafts
• Lubrication access and grease condition
• Operating temperature near shaft positions
• Lubrication method and cleanliness
• Shaft or housing misalignment
• Speed and temperature range

Failure Risks

• Raceway indentation, spalling, or cracking from shock and overload
• Dust ingress and abrasive lubricant contamination
• Overheating from insufficient clearance, poor grease flow, or misalignment
• Loose fits, fretting, damaged shoulders, or distorted housings

Configuration Matrix

Selection Checks

• Confirm crusher type, bearing position, full marking, load or duty cycle, speed, and shaft/housing condition.
• Check bore, cage, clearance, fit, lubrication, sealing, shoulders, and mounting method.
• Include failure photos, dust/moisture conditions, quantity, destination, and downtime target.

Related Products and Technical References

Use these pages to compare bearing construction, model data, internal clearance, suffixes, and replacement constraints for this equipment.

Technical and Quality References

Information to Record

Record the fields below before changing the bearing. They help separate a bearing symptom from a machine, mounting, lubrication, or contamination problem.

• crusher type
• bearing position
• bearing model
• load condition
• dust level
• lubrication condition
• temperature
• quantity