Roller Bearings: The default standard bearing for caster wheels, sometimes known as needle bearings. Offering high load capacity, long life and easy rolling.
Low speeds with short travel and minimal side thrust. Designated with "R" in Service Caster part numbers, SCC-30R3420-PHR.
Sealed Pedestal Precision Ball Bearing : A great maintenance free option (no grease required) and upgrade compared to roller bearings. Ball bearings provide a more quiet, easier rolling operation. The spanner bushing is integrated into the bearing design. Designated with a "B" in Service Caster part number, SCC-30R3420-PHB.
Delrin Bearings: Delrin a type of plastic known for its strength and resistance to water absorption. These bearings also offer a chemical resistance to most fuels and solvents. Designated with a "D" in Service Caster part number, SCC-30R3420-PHD.
Precision Bearings: A pair of Precision bearings replaces the roller bearings and spanner bushing. Higher speeds and duration plus a more quiet ride is possible over plain sleeve and roller bearings.
Not recommended for high side thrust.
Designated with a "P" in Service Caster part number, SCC-30R3420-PHP.
Tapered Bearings: Select when extended use, higher speeds up to 10 mph, and increased thrust from turns is expected. Tapered bearings provide optimum performance for extreme capacity applications; used in our Series 92 casters as an example, designated with a "TPB" in Service Caster part number, SCC-KP92R1030-PHT.