Inner rings should be mounted with an interference fit. Therefore, SKF recommends heating them prior to installation.
Typically an inner ring temperature of 80 to 90 °C (145 to 160 °F) above the shaft temperature is sufficient for mounting. Do not heat an inner ring to more than 125 °C (260 °F).
Any heat techniques normally used for bearings are suitable, such as induction heaters or heating cabinets.
The rings should be installed immediately after heating since they cool rapidly and could seize on the shaft before they reach the correct position. If repositioning is necessary, use a soft faced hammer and a wooden block. After the ring is in the desired position, check the lead-in-chamfer for any damage during installation.


The rings can be removed either by heating them or using a puller.
SKF logo