Parts of adapter to hold taper hole bearings in any positionMade of steel (SS400) for the material.

■ What is a bearing/Chrysanthemum washer (AW washer)?

It is used with lock nuts and has a single tooth inside and a number of teeth on the outside.

Insert the inner teeth into the groove cut into the axis, and either of the outer teeth are folded against the groove perimeter of the lock nut, preventing loosening.

Just like the lock nut, it is manufactured according to the JIS standard "JIS B 1552".

■Lock nut/bearing washers material and size

Lock nut and bearing washers are both made of steel (SS400) and stainless steel (SUS304).

There are 15 sizes ranging from M10 to M70.