Major Brand NKX12Z Needle Roller Thrust Ball Bearing with Closure Ring and Cover 12x21x23mm

Needle Roller / Ball Thrust Combination: Of a non separable design has a cover attached to the housing washer which extends over the needle roller bearing outer ring, these are particularly suited to grease lubrication as the cover acts to retain the lubricant. They are able to support heavy single direction thrust loads in addition to radial loads, they also permit relatively high speed operation.
Benefits: High speed / thrust loading, grease lubrication, non separable - easily mounted