Originally Posted by Bob4x4
The heating is way overkill.You will never see a pro do this.Since you will have the correct tool just drive the race in.You are over thinking this simple task
Originally Posted by SteveH
Sorry guess I been do'n it rong for all these years.....
From Timken directly.
See the General Bearing Handling and Inspection Section for more information about mounting bearings, including methods to heat bearings or press them on/in using an arbor press.
When heating tapered roller bearings, inner ring temperatures should not exceed 120°C (250°F) for Standard Class bearings and 66°C (150°F) for Precision Class bearings. Higher temperatures can change the bearing’s hardness and geometry.
Whenever inner or outer rings are heated or cooled during assembly, after mounting and returning to room temperature they should be checked with a 0.001 in. - 0.002 in. feeler gage. This ensures that the inner ring is pressed tightly against the shaft shoulder (Fig. 23) or the outer ring is pressed tightly against the housing shoulder. Before checking, ensure that both the inner and outer rings are pressed tightly against the shaft or housing shoulder.
"Sticks & stones can break your bones...and hail will dent your Airstream"
So when is this..."old enough to know better" supposed to kick in?