The SFK TMHN 7 set of lock nut spanners is especially designed for mounting self–aligning ball bearings as well as small spherical roller and CARB® bearings on tapered seatings. Using the TMHN 7 minimises the risk of over–tightening of the lock nut, which can result in removing the bearing’s radial clearance and bearing damage.

Interference fits on tapered shafts
Bearings mounted on tapered seatings achieve their interference fit by being driven up the tapered shaft. Care should be taken to ensure the bearing is not driven up too far, as all the internal clearance may be removed and damage to the bearing is possible.