NSK NU324 EM Cylindrical Roller Bearing - 120 mm ID, 260 mm OD, 55 mm Width, Cylindrical Bore, Normal Sealmaster The spindle extension is used

The spindle extension is used to extend the spindle for the 8-HP series

The plates grip behind the inner ring of the bearing

Packaging Boxed Weight (Catalog) 3

Furthermore

just by pushing the sleeve forward - for rapid bit change with just one hand

NSK NU324 EM Cylindrical Roller Bearing - 120 mm ID, 260 mm OD, 55 mm Width, Cylindrical Bore, Normal Sealmaster The spindle extension is usedCylindrical Roller Bearing Cylindrical Roller Bearings have high radial load carrying capacity and are suitable for high speeds. The bearings are separable which facilitates mounting and dismounting. Manufactured to precision tolerance class for demanding applications. Suitable for use in a wide range of industrial applications where reliability and performance are essential.