The advantages: silent and regreaseable

 

The ISB range of products is ever more extensive. GRAE NPP-B ISB radial insert ball bearings with locking collar are single row balls made up of a solid outer ring, a wider inner ring on one or two sides, steel (or plastic) cages and seals. Having a wider inner ring on both sides, this type of bearing has less tipping right on the inner ring, thus ensuring a less noise during operation.
The GRAE NPP-B ISB radial insert ball bearings with locking collar are also regreaseable by having two lubrication holes in the outer ring. These products are used both in the agricultural field (agricultural equipment in general) and in the industrial field (as for example in the systems for air extraction in industrial plants) and can be assembled on PME ISB bearing units.

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