Bearing Lock Nut Torque Chart. The chart below shows dimensions for locknuts and lockwashers used in the mounting of straight bore bearings on shafts. Use a qualified calibrated torque wrench. Reduce the life of your bearing spindle or hub.
Dimensions are presented according to bearing bore size and are applicable to bearings in the various series e g 222 and 223 etc. Other dimensions and tolerances related to shaft configurations are also shown.
Step 2 seat the bearing.
Thread the nut onto the axle until hand tight against the bearing. While you might be able to guess the right amount of torque over torquing the lock nut will put stress on the bearing and can cause it to fail prematurely. Lock nuts are used to locate bearings onto a shaft. Torque tension relationship for a307a grade 5 8 9 bolts locknut size threads per inch steel hex locknut steel hex flange nut grade c fnl grade 9 grade f grade g clamp load lbs tightening torque clamp load lbs tightening torque clamp load lbs tightening torque clamp load lbs tightening torque min max min max min max min max.
