The limiting speed for grease and splash oil are shown in the "Load Rating and Limiting Speed"
charts. If a circulating oil system is used, a limiting speed of 150% of the grease limits is used.
These limiting speeds are conservative and can be increased with experience on the specific
You may have to clean bearings when they have been removed from their positions, during
overhaul of equipment or to remove accumulated dirt of deteriorated lubricants.
To clean unmounted bearings use a clean petroleum solvent or kerosene. You may soak the
bearings in a hot light oil (200° F max) or if you have extremely oxidized greases you may boil in
an emulsifying cleaner. If compressed air is used be sure it is clean . . . do not allow the bearing
to spin : during blowing. After all solvents have been removed coat bearing with petroleum and
reinstall in the pillow block or wrap in clean oil-proof paper while awaiting reassembly.
To clean mounted hearings flush a hot, light oil (180 to 200°) through the housing while rotating
the shaft slowly. A hot aqueous emulsion may be used as a flush. When the bearing is clean
remove all solvents and flush housing and bearing with a hot light oil. Relubricate with the