Greaseless electric motors are those where lubrication must be performed according to the existing preventive maintenance plan. Motors with shielded bearings must have the bearings replaced at the end of the grease service life.
For electric motors rab wpled13 with grease lubrication, the bearing must be relubricated with the engine stopped, and it must be done by cleaning the vicinity of the grease inlet, placing approximately half of the recommended grease in order to rotate the motor for one minute in the Nominal rotation. After this procedure, shut off the engine and put the rest of the grease.
For relubrication of bearings with the engine running, the vicinity of the grease inlet hole must be cleaned by placing the recommended total amount of grease and finally replacing the grease entry guard. For lubrication, the use of manual lubricator is indicated and for each increment of 15 ° C in bearing temperature, the relubrication interval should be reduced by half.
For horizontal position motors, but installed vertically, the relubrication interval must be halved. In special applications such as high and low temperatures, aggressive environments, speed variation, obtain with the manufacturer information regarding the type of grease and lubrication intervals to be used.