Before a bearing is sent out for reconditioning service, it first must be removed from its shaft housing. It is important to use great care during the removal process to ensure the bearing, shaft and housing are not damaged. Bearing removal is best accomplished by using a bearing puller for standard bearing outer and inner rings, which is available through many manufacturers, including Timken. When removing bearings that have a backing shoulder that extends beyond the cone large rib, a puller that pulls through the rollers should be used.
Hydraulic pressure is another available method to remove bearings.
Pullers or wedges also may have to be used to remove the bearing after the hydraulic pressure has expanded the race. Hot oil or heat may be used along with the pullers or wedges. When the puller has been placed on the bearing and pressure is applied, the bearing race should expand and be easily removed. Always use extreme caution when working with hot oil or steam. Because contact with hot oil or heat sources can result in serious bodily harm, protective clothing and safety glasses should be worn at all times.