The bearings come filled with SealMaster Gold-Plex-HP grease. The bearings are available in shaft sizes of 5/8 to 27/16 in. and with three types of seals: SealMaster felt seal for protection against dry contaminants, a spring-loaded lip seal for heavy contamination environments, and single-lip seal for wet environments.
Reduced maintenance bearings
The SealMaster line of bearings uses a Tapered Lands bearing-race design that reportedly improves lubricant circulation for longer service life.