Bearing Maintenance & Lubrication

Over 50% of bearing failures are caused by improper lubrication. Understanding grease compatibility and relubrication intervals is critical for industrial uptime.

Relubrication Interval

The interval depends on the operating temperature, load, and speed (dn value). Relubrication should ideally occur while the bearing is running to ensure even distribution.

Grease Compatibility

Never mix different thickener types (e.g., Lithium vs. Polyurea). Incompatible greases will thin out and leak or harden and cause failure.

Failure Identification

  • Discoloration: Indicates overheating (lack of lube or too much load).
  • Spalling: Fatigue failure of the rolling surfaces.
  • Pitting: Usually caused by moisture or electric current discharge.
  • Brinelling: Dents in the race caused by shock loads or improper installation.