Features
   - Better dustproofing and waterproofing ensures longer bearing life.
     The triple-sealed bearing is provided with a triple-lipped bearing seal. The special seal offers reliable dustproofing and waterproofing superior to those of standard bearings for bearing units. It therefore ensures longer service life even under conditions of heavy airborne dust and dirty splashing water.

Reduces maintenance cost.
     - With a longer bearing life than ordinary bearings used in unit configurations, these bearings have longer maintenance intervals, greatly reduced maintenance costs (for inspection, relubrication, replacement, etc.), and increased productivity of machines. 
     - Decreases price of bearing unit and allows for much more compact machinery. 
     Under certain operating conditions, the triple-sealed bearing unit can replace conventional covered bearing units, greatly decreasing the cost of bearing units. Furthermore, if the cover is not needed, machinery can be made much more compact.
     - Balled setscrew ensures secure fastening
     The triple-sealed bearing is mounted on the shaft with NTN's unique balled setscrew, which has an embedded ball in its tip. This setscrew boasts much greater resistance to loosening than serrated or cup-point setscrews, and does not readily loosen due to vibration or impact.
     - Interchangeability
     The triple-sealed bearing unit conforms to the JIS standard for UC-type bearings. It can be readily used as a relubricable bearing, and can replace NTN's conventional bearing unit and other manufacturers' products. It can therefore easily be used to replace existing bearing units during machinery maintenance.