why use c3 bearings
RE: why the C3 bearing is commonly used in MOTOR. As you know C3 is a designation for internal radial clearance. C2 is normal, and C3 is looser than normal. I do know that SKF considers C3 to be the standard internal radial clearance for electric motors.Y QUESTION IS THAT WHY C3 bearing is used in High or low voltage induction motors. Why not normal or C1 or any else. thanks.
posted 09-04-2000 10:41 PM Many of our gearboxes contain C3 clearance bearings. The explaination I was given regarding this is that it is due to the high ambient temperatures of our region.My info says that C3 clearance were for use in applications where there is a temperature differential between the inner and outer races.Hence there is uneven thermal expansion resulting in closing up of the internal bearing clearance.his is because general equipment, most motors, pumps and gearboxes, do not maintain the high machining tolorances required by the use of a C2 or tighter bearing and does not require the loose tolorance of a C4 or higher due to either thermal expansion or location.I guess this would make a C3 the normal.