​Housing Styles
Pillow Block, Flanges, Piloted Flanges

Locking Styles
Setscrew

Bore Size Range
1 – ³⁄₁₆” to 5″ and 35 mm to 125 mm

Housing Materials
Cast Iron and Cast Steel

View specifications

Tapered Roller Bearings
Sealmaster RPB series contains heavy duty tapered roller bearings for radial, thrust and combination loading.

Durable Cast Iron Split Housing
Durable cast iron split housings allow for quick insert replacement when change-out is required. Once installed, the base remains fixed and aligned with the shaft, reducing downtime and maintenance costs. Guide pin in the housing base orientates the proper assembly of the cap during replacement. Pillow block housings have elongated bolt holes for interchangeability with other competitive units. Permanent metal nameplate allows for easy identification after years of operation. Multiple housing styles include 2 and 4 bolt pillow block (RPB), 4 bolt flange (RFB), Piloted flange (RFP). Inch and metric bore size from 1 3/16″ – 5” bore and 35 to 125 mm.

Replaceable Cartridge Insert (RCI)
The heart of the RPB is the unitized, self-aligning cartridge insert with integral seals and double locking collars. The replaceable cartridge insert can accommodate +/- 3° static misalignment and is factory sealed and lubricated. The cartridges fit all housing styles and are field replaceable for quick change out. RCI outer races are black oxide treated.

Felt Seals
Patented race mounted felt lined flinger seals help filter out contaminants and are not subject to misalignment distortion. The felt acts as a filter to help exclude contaminants. The rotating flinger helps repel contaminant build-up on the seal surfaces. Felt seal stampings are black oxide.

Single Lip Contact Seal
Single lip race mounted contact seals for dry, dirty and wet conditions. It’s composed of a steel inner seal with a bonded elastomeric sealing member. The steel inner seal is press fit into the inside diameter of the outer race. The bonded elastomeric sealing member is held in the proper rubbing contact position on the outer diameter of the inner race. Contact seal stampings are black oxide.

Positive Lubrication System
Positive lubrication system provides direct grease path to the bearing. The unit is designed with two lubrication ports in the cartridge OD. This ensures one of the lube holes in the cartridge lines up with the grease fitting, regardless of insert orientation in the housing. A rubber grommet in housing top recess directs lubricant into bearing cavity. Extra lubrication ports help prevent seal damage by venting excess pressure from over greasing. Sealmaster alignment pin helps prevent outer race rotation.

Collar Mount System
Two locking collars are standard on all units with two setscrews at 120° for balanced three point contact. Precision manufactured diamond faceted point setscrew design contributes to improved clamping and resistance to back out. Single locking collars are available where space limitations are present. Locking collars are black oxide treated.

Additional Configurations

Expansion Roller Bearing Pillow Blocks
Axial shaft expansion is compensated by a non-expansion (fixed) and expansion (float) arrangement. It is recommended to use both units on one shaft in high temperature applications to help account for linear shaft expansion.

ERCI Cylindrical Cartridge Inserts
Cylindrical cartridge insets (ERCI) are used in standard expansion ERPB housings or can be mounted into customer designed housings.