Page 16 - needle bearings

Classification and Characteristics of Bearings
NTN

Linear flat roller
This is a flat roller bearing which comprises a flat
cage and needle rollers and reciprocates on a flat
raceway in linear direction by motion of its linear
movable components.
¡The molded polyamide resin cage and press-
formed steel plate cage are selectively available
on application.
¡FF type molded resin cage ʕ Several cages can
be used with them jointed with each other in
parallel configuration.
¡The press-formed steel plate cage ʕ Cage to
cage jointing is unavailable, but it can be supplied
at any optional length.
¡In the case of double-row resin cage, it is provided
with an elastic joint at its center part so it can be
reformed at any optional angle by dipping it in an
oil of 70 to 90˚C and can be mounted on a Vee-
grooved surface.

Linear roller bearing
This bearing comprising cylindrical rollers capable
of turning internally around the track frame moves
endlessly on a flat surface in linear direction.
¡Low friction factor due to the case assemblies
preventing neighboring roller from touching.
¡High load rating due to use of cylindrical rollers.

A-12