Use the Whiteside BB600 18 piece general bearing repair kit for replacing bearings on most bits. This handy kit includes spare bearings, cap screws, and hex key wrench (Allen key).
Whiteside ball bearings included [with i/d = 4.76mm (3/16”)]:
2 pieces × B2 bearing with o/d = 9.53mm (3/8”)
5 pieces × B3 bearing with o/d = 12.7mm (1/2”)
10 pieces × 54025S cap screws
Plus a Whiteside HK - 3/32" hex key wrench
Ball bearings supplied by Whiteside and recommended for all Whiteside router bits. The standard issue ball bearings are made from steel and have metal shields – they are the unsealed type. To increase the longevity and performance (to reduce wear) of the bearings light lubrication is recommended. Special application router bits are supplied with the appropriate bearings.