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Construction of NTN Bearing Units

Essentially a double sealed ball bearing installed in a special housing, an NTN Bearing Unit is available in a wide variety of configurations. The spherical fit of the insert bearing O. D. and housing I. D. allows the bearing to compensate for misalignment.

NTN's unique ball-point set screws for select bearing units reliably lock the bearing units to the shaft even when they are subjected to vibration or impact loads.

The typical bearing housings for NTN bearing units are made of cast iron or steel plate. Cast iron housings are standard. For special purposes, the housings can be supplied in spheroidal graphite cast iron, structural rolled steel, cast stainless steel or resin.