NAST series are yoke type bearings that have been developed to satisfy customer needs which requires track roller bearings with good load endurance and relative high rotation speed.

This type is one of JMC’s standards and is composed of inner, outer rings and precision cage.

NAST.. types do not have side fixing ring. On the other hand, NAST..ZZ types have two side fixing rings on both sides. Arrangement of side fixing rings that guide the outer ring differ from NART.. type.

Fixing rings of NART.. types are compressed to the inner ring, preventing the roller from being erparated.

On the other hand fixing rings of NAST types are loosely assembled, letting the roller to be separated.

Moreover, the cage with inserted needle may also be separated. RNAST.. types are supplied without inner rings. You can directly use them on shafts or housings.