Urethane Products

Ralphs-Pugh Urethane Tapered Rollers

Ralphs-Pugh Urethane Tapered Rollers are recommended for continuous and intermittent gravity or powered turns. Our proprietary casting process ensures the urethane will not “walk”. Our tapered rollers are manufactured to standard turn radius designs or custom turn radius designs offering a “True Taper”. True tapers eliminate the need for sideboards and results in directionally stable package handling. Urethane offers a variety of advantages versus steel shells. Most notable advantages are shock and impact resistance, non-marking surface and superior cut, tear, and wear resistance. When combined with Ralphs-Pugh Urethane Hexagonal Shaft Adapters and precision bearings, these rollers are the quietest available.

picture of urethane rollers

How to use this section:

Our Customer Service Department will require the following information to assist in the proper selection of a Urethane Tapered Roller:

  • Small and Large End Diameters or Inside Turn Radius
  • Durometer of Urethane
  • Gravity or Powered – (if powered, grooves, sprockets or steel drive rings)
  • Load and Speed
  • Environment
  • Shaft Size and Configuration
  • I.F. – Inside Frame Dimension

Tube Information:

Tube Materials: Galvanized Steel, Carbon Steel, Stainless Steel, and Aluminum.

Drive Options: Location and dimensions of sprockets, grooves, one way clutch, or steel drive rings (see drawings in this section).

Shaft Information:

Shaft Materials: Carbon steel, stainless steel, and aluminum. Zinc and nickel plating are available.

Shaft Configurations: Hexagonal and round

Shaft Extensions: Standard is 9/16” from the hub of the bearing to the end of the shaft per side. If you require a specific shaft length, notify customer service when ordering.

Shaft Deburring: Standard on all shaft ends.

Springs: Standard is dual spring loaded with shaft depressing to the hub of the bearing.

Shaft End Options: Plastic or urethane adapters over an internal metal shaft, fixed shaft, through shaft, threaded ends, drilled and tapped ends, drilled holes, milled flats, D-shaft ends, plastic flat caps.

Bearing Information:

Stamped Commercial: An economical commercial grade plated steel bearing with hardened steel balls and raceways and a full compliment of balls. There is no ball retainer and outer raceways are either machined or stamped. Normal lubrication is light oil, however they can be ordered grease packed for powered applications. Loads and speed capabilities are classified as light to moderate. These bearings are identified by a 22 prefix in the part number. They are manufactured to our specifications by outside vendors. Example - 22A6

Steel, Commercial: These are an economical commercial grade plated steel ball bearing in an engineered conductive or non-conductive plastic housing with or without labyrinth seals. All plastic housings are designed, engineered, and molded in our facility. The raceways and full compliment of balls are hardened steel. Loads and speeds are classified as light to moderate. Normal lubrication is light oil with grease packing available for powered systems. For optimum performance and bearing life these units are swaged into the metal tubes. These bearings are identified by a 2 prefix in the part number. Example - 2A6

Stainless Steel: These are commercial grade stainless steel ball bearings in an engineered conductive or non-conductive plastic housing with or without labyrinth seals. All plastic housings are designed, engineered, and molded in our facility. The combination of stainless steel and available labyrinth seals offers the ultimate solution to wet and corrosive applications. The raceways and full compliment of balls are series 300 stainless steel. Loads and speeds are classified as light to moderate. Normal lubrication is light oil with grease packing available for powered systems. Food grade lubricants are also available. For optimum performance and bearing life, these units are swaged into the metal tubes. These bearings are identified by a 2 prefix in the part number. Example - 2A7

ABEC-1 Precision: These are ABEC-1 precision chrome alloy steel bearings grease packed with hardened and ground balls and raceways and a ball retainer. They are housed in an engineered plastic housing designed, engineered, and molded in our facility in conductive or non-conductive materials with or without labyrinth seals. These bearings offer the highest load and speed capabilities, the lowest noise levels and have the longest life span of any available bearing unit. For optimum performance and bearing life, they are swaged into the metal tubes. These bearings are identified by a 3 prefix in the part number. Example - 3A6.

ABEC-1 Precision bearings in stamped zinc plated steel housings: Economical alternative to ABEC-1 bearings in plastic housings. These bearing inserts work well in higher load and speed applications while maintaining very low noise levels. The ABEC-1 bearing has hardened and ground balls and raceways, a ball retainer and is grease packed (25% pack) at the factory. Non-Contact Rubber Seals (LLB) protect the caged ball compliment. The stamped zinc plated housing on some variations incorporates a dust shield for added protection to the precision bearing. The life expectancy of a precision bearing is many times that of a non-precision bearing. For optimum performance and bearing life we recommend the bearing units be swedged into the metal tubes. These bearings have a 33 prefix in the part number. Available for metal tubes only. Example - 33RP

Bushing: These non ball bearing style bearing units are designed for light to medium loads and slow speeds. Typical installations are push conveyors and gravity conveyors. They are ideal for sanitary, rust and corrosion resistant, and maintenance free wet or dry applications. Bearing surface materials include Ultra (Acetal plastic with Teflon additives), CS2 (Acetal) and ABS plastic. Bushing inserts include nylon, stainless steel, and carbon steel. These bearings are identified by a 5 in the prefix of the part number. Example - 5B5

Urethane Information:

Color:

  • Standard: Black
  • Options: Inquire with Customer Service

Durometer:

  • Cast Urethane - 90 Shore A standard
  • Foam Tapers - 65 Shore A (+/- 5)
  • Options: Available, inquire with Customer Service

Optional Material: Food grade available

Roller Length:

I.F. = Inside Frame Distance. This measurement allows 1/16” of freeplay per side for a total of 1/8” per roller.

O.A. = Overall Roller Length. This is the measurement from bearing hub to bearing hub of the roller. For calculation purposes I.F. –1/8” = O.A.

Drawings are provided to illustrate the required configuration and dimensional information.
Please have them available when talking to Customer Service.

Contact Customer Service for a detailed catalog
of Ralphs-Pugh products, 1-800-486-0021

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