Ralphs-Pugh rollers
Urethane Rollers and Adapters
Urethane combines the toughness of plastics and metals with the elasticity of rubber. Urethane-covered rollers grip without slipping, won’t mark the product and run quietly – and urethane shaft adapters stop frame wear and clatter.
- 90 Shore Astandard cast hardness
- 50 – 90Shore A foam
- 93 °Cmax. temperature
The range
Options
Urethane Compared
| Advantages vs Metal | Abrasion resistance Noise Abatement Corrosion resistance Toughness upon impact |
| Advantages vs Plastic | Non-brittle upon impact Elastomeric memory (when stretched will return to original dimensions) Abrasion resistance |
| Advantages vs Rubber | Abrasion resistance Cut and tear resistance Higher load bearing capacity Ozone resistance Colours available for colour coding parts Harder durometer range Resistance to mold, fungi, etc Non-marking |
Roller Options
| Core Tube Materials: | Carbon Steel Galvanized Steel Stainless Steel Aluminium |
| Drive options: | Grooves and Sprockets |
| Shafts: | Roller shafts are spring loaded on both ends for easy installation and removal. End deburring is standard. |
| Materials: | Carbon Steel Stainless Steel Aluminium Zinc and Nickel Plating Available |
| Shafts: | Roller shafts are spring loaded on both ends for easy installation and removal. End deburring is standard. |
| Shaft End Options: | Hexagonal Round Threaded Drilled and Tapped Milled Flats Plastic Flat Caps Urethane Adapters Over Metal Through Shaft |
| Springs: | Standard is dual spring loaded with shaft depressing to the hub of the bearing. |
| Optional Materials: | Food Grade available |
| Drive Options for Tapered and Sleeved Rollers | Grooves for line shaft or motorized slave rollers. Sprockets on either end. Open area on core tube for drive belts. Metal drive ring over urethane for drive belt. |
| Colour | Standard Tapers: Black Sleeves: Black (70 durometer) Orange (80 durometer) |
How it works
The Urethane Options
Sleeved and Tapered Rollers
Cast or interference-fit sleeves are locked to the tube with adhesive or rolled grooves so they don’t walk. Tapered rollers are cast over a steel core for true tapers on curves – no sideboards needed.
Shaft Adapters
Conductive urethane adapters over the shaft ends stop metal-to-metal contact, frame wear and noise, and let static drain safely to the frame. Rated to 45 kg (100 lb) per roller.
Why urethane
Quiet, Grippy, Hard-Wearing
Versus Metal
Abrasion and corrosion resistance, quieter, tough on impact.
Versus Plastic
Not brittle; returns to shape.
Versus Rubber
More abrasion, cut and tear resistance, higher load capacity, non-marking.
Limits
Max 93 °C; avoid steam cleaning and strong acids or bases.
How to choose
What We Need to Know
Tapers
Small and large end diameters and inside turn radius.
Material
Hardness (Shore A) and surface finish.
Drive
Gravity or powered (grooves or sprockets).
Frame and Duty
Inside frame width, shaft, load, speed and environment.
Related
More Information
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right Ralphs-Pugh product.