Bearing Maintenance

Rust, corrosion
Injury Status: rust and corrosion of spherical ball bearings have raceways round of pit-like rolling surface rust, rust and corrosion round.
The reason: water, corrosive substances (paint, gas, etc.) intrusion. Lubricants inappropriate. Due to condensation of water vapor with water droplets. Temperature and humidity when stopped. During transport heavy rustproof bad. Inappropriate custody status. Inappropriate use.
Measures: to improve the sealing device. Research lubrication. Turn when stopping corrosion protection. Improve storage methods. To be used with caution.
Installation scars
Damage state: When you use during installation and removal, etc. to the roll axis linear scars road surface and rolling surface caused.
Cause: The installation, disassembly of the inner and outer rings tilt installation, impact load of destruction.
Measures: the impact load to prevent the use of appropriate tools to use punch. Centering each other during installation.
Discolor
Damage state: As temperatures rise and lubricants reactions, raceways and rolling elements and the wheel cage discoloration.
The reason: poor lubrication. Causing hot oiled and reflect lubricant. Large temperature rise.
Measures: improving lubrication.
From the foregoing, regardless of the gap can be adjusted or non-adjustable gap bearings, they have to adjust the axial clearance in the assembly (the gap is not adjustable but some do not have to stay thrust roller bearing xial clearance), when the temperature rises to compensate for shaft the thermal elongation, thus ensuring the normal operation of thrust ball bearing body. If the axial clearance is too small, it will cause the bearing to rotate difficulties, fever, and even bearing body stuck or damaged; if the axial clearance is too large, it will result in different sound operation, vibration or even cause serious damage to the retainer .