Choosing The Right Roller

By IBT Inc

August 02, 2012

Material Handling

When your conveyor application need rollers – especially a high quality specialty conveyor rollers, either gravity fed or powered – you must be sure that you choose carefully.

By choosing Ralphs-Pugh rollers from IBT – you have already made a very intelligent choice. But, you are only partially down the road to true conveyor roller perfection

The rollers need to be matched carefully to the job conditions and application challenges. The right roller will be neither under-engineered or over engineered for the job. It will be selected for its ability to stand up under the work environment. It will be chosen to give you long life and operate without any problems.

Key considerations include:

  • Size of roller: Diameters may range from under 1″ to over 3″
  • Type of shaft: It can be round or hexagonal – and are also available in a variety of sizes
  • Length: Almost the right length doesn’t do it. Measure carefully (and repeatedly)
  • Roller tube material: Choose between plastic, urethane covered, carbon steel, galvanized steel, or stainless steel
  • Bearing: type, size, raceways, housings, mountings – all must be carefully reviewed. Availability includes steel balls in plastic housings, zinc-plated or stainless steel commercial grade, ABEC-1 precision units, or plastic on plastic styles.
  • Chemical and Moisture Resistance: Water resistance – especially wash downs. Resistance to a variety of chemicals: acidic, corrosive, and harsh solvents and others.
  • Weight Bearing Capacity: From under 25 pounds – to over 3,000 pounds.
  • Speed: this can range from gravity only on the low side, to greater than 400 feet per minute.

Talk to IBT Material Handling to make sure you get the best rollers for your job!

Ralphs-Pugh classifies its rollers in “Series.” Here’s how they describe them:

Series 1 Rollers

  • Light duty rollers.
  • Steel ball bearings in plastic raceways. (Exceptionally free spinning.)
  • Roller diameter 1″ to 1.9″.
  • Shaft options from 3/16″ diameter to 7/16″ hexagonal.
  • Good for washdown and food handling applications.
  • Move light packages effortlessly.
  • Weight limitations: 25 lbs. or less – light duty gravity applications.
  • Low maintenance, long lasting operation.
  • Components available in a variety of materials.

Series 2 Rollers

  • Highly adaptable for material handling.
  • Roller diameters from 3/4″ to 3 1/2″.
  • Shafts: from 3/16″ diameter to 1 1/16″ hexagonal.
  • Bearings: Plated Steel Stamped, Steel in Plastic Shielded Housings, Steel in Double Labyrinth Sealed Plastic Housings, and Stainless Steel Bearings in Sealed Plastic Housings.
  • Load ratings: up to several hundred pounds per roller.
  • Speed: up to 200 feet per minute.
  • High quality commercial grade bearings.
  • Excellent for washdown applications.
  • Dual spring-loaded shafts for easier installation.
  • FDA-approved materials available.
  • For use with gravity or powered conveyor applications.
  • Custom grooved tubes available.

Series 3 Rollers

  • Precision ABEC-1 bearings.
  • Urethane hexagonal adapters extend frame life.
  • Substantial noise reduction for extremely quiet operation.
  • Ideal for heavy-duty: rated for loads from 850 to 3150 lbs.
  • High speed: in excess of 400 feet per minute.
  • Permanently lubricated and dual shielded bearing.
  • Double labyrinth seals for corrosion resistance.
  • Electrically conductive bearing housings for controlling static buildup.
  • For use with gravity or powered conveyor applications.
  • Pay a little more and get up to 5 times the life of commercial style rollers
  • Available: high impact resistant PVC, aluminum, steel, galvanized, and stainless steel.

Series 5 Rollers

  • Bushing style rollers.
  • Suitable for moderate and heavy duty applications.
  • A variety of end plug and bushing materials.
  • Free spinning: ULTRA. (Acetal plastic with impregnated lubricants.)
  • Plastics: UHMW, Celcon, polypropylene, etc. for vegetable, meat, poultry, fish, canning and beverage industries.
  • Recommended for both wet and dry applications.
  • For harshest environments and/or inspection criteria applications.
  • Blind-hole, through-hole and spring loaded rollers for easy cleaning and replacement.
  • Secure press-fit bushing assembly.
  • For use with gravity or powered conveyor applications.
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