| Sliding contact surface combination steel/PTFE composite An initial lubrication followed by occasional relubrication of steel/PTFE composite bearings can extend the service life by a factor of at least 2. The inner rings and shaft washers of such bearings are coated with lithium base grease before leaving the factory. If operating conditions are such that protection against corrosion and enhanced sealing are required, the free space surrounding the bearing fig 5 ) should be filled with the same grease as that used for bearing lubrication. The appropriate time to replenish or renew the grease in the bearing arrangement is determined by the operating conditions and the ageing of the grease. Rust inhibiting, water-repellant lithium base greases of normal consistency should be used, for example, the SKF grease LGEP 2 Table m ). On no account should greases containing molybdenum disulphide or other solid lubricants be used. |