How to Dismounting of Bearings with Cylindrical Bores

Time：2015.12.24  Source：Roller Bearings Suppliers

If the mounting design allows space to press out the inner ring , this is an easy and fast method . In this case , the withdrawal force should be imposed only on the inner ring . Withdrawal tools are often used .

In both cases , the claws of the tools must substantially engage the face of the inner ring:therefore , it is advisable to consider the size of the shaft shoulder or to cut grooves in the shoulder to accommodate the withdrawal tools .

The oil injection method is usually used for the withdrawal of large bearings . The withdrawal isachieved easily by mean of oil pressure applied through holes in the shaft . In the case of extra wide bearings , the oil injection method
is used together with a withdrawal tool . Induction heating is used to remove the inner rings of NU and NJ types of cylindrical roller bearings . The Inner rings are expanded by brief local heating , and them withdrawn . Induction heating is also used to mount several bearings of these types on a shaft .