FAG 1315 -M Self-Aligning Ball Bearing - 75 mm ID, 160 mm OD, 37 mm Width, Cylindrical Bore, Normal Misumi but they are essentially to

but they are essentially to provide a better protection and grip for your tools

Fast switching from left to right and vice versa via the switching lever

The Whittet-Higgins BH-065 BEARHUG is a self-locking bearing locknut that threads onto a bearing-mount shaft to axially position

Wera 2067/6 HF SCREWDRIVER SET 05345277001

Heating the bearing causes it to expand

FAG 1315 -M Self-Aligning Ball Bearing - 75 mm ID, 160 mm OD, 37 mm Width, Cylindrical Bore, Normal Misumi but they are essentially toSelf Aligning Ball Bearing Self Aligning Ball Bearings have two rows of balls and a common concave sphered raceway in the outer ring. They are insensitive to angular misalignment of the shaft relative to the housing. Manufactured to precision tolerance class for demanding applications. Suitable for use in a wide range of industrial applications where reliability and performance are essential.