Automotion Components Rollers Overview
What is
General Guidance
Product Overview
Solid Rollers - have a smooth surface and a solid body
Durasoft Rollers - have a smooth contact surface with teardrop holes to allow greater roller compression under load
Finned Rollers - are grooved and provides self-cleaning as dirt, debris and liquid pass under the contact surface of the roller
Durability levels
20 durmeter: Stiff foam rubber
35 durometer: Pencil rubber top
60 durometer: Car tyre
80 durometer: Skateboard wheel
90 durometer: Hockey puck
Technical Specs
Standard bearings
| Bearing Type | Inside diameter (inches) | Outside diameter (inches) | Width (inches) | Load (Kg) | Speed (rpm) |
| A - Standard Double | .313/.317 | .870/.875 | .498/.502 | 55 36 24 20 | 50 100 250 500 |
| B - Standard Single | .500/505 | 1.245/1.250 | .370/.380 | 119 79 51 47 | 50 100 250 500 |
| C - Standard Double | .500/505 | 1.245/1.250 | .745/.755 | 192 128 83 70 | 50 100 250 500 |
With the calculations above, typical life is approximately 2500 hours.
Clutch bearings
| Bearing Type | Inside diameter (inches) | Outside diameter (inches) | Width (inches) | Load (Kg) | Speed (rpm) |
| H | .3745/.3750 | .6245/.6255 | .865/.875 | 167 146 116 85 | 33 50 100 250 |
| I | .6245/.6250 | .8745/.8755 | .990/1.000 | 277 242 192 142 | 33 50 100 250 |
With the calculations above, typical life is approximately 1,000,000 revolutions or 500 hours. The bearings are shielded and pre-lubricated for life with grease.
A clutch roller can only be used in one direction, as shown. See data table for clutch direction of particular part number e.g P2756....
Left clutch bearing
Right clutch bearing
Materials
Nitrile and neoprene
Nitrile - One Colour
Neoprene - One Colour
Urethane
35 Durometer (Yellow)
60 Durometer (BLue)
80 Durometer (Red)
95 Durometer (Orange)
| Base Elastomer | Chemical Name | Advantages | Disadvantages | Max. Temp | Min. Temp |
| White Nitrile | Nitrile Butadiene | Resistant to petrolium, oil, alcohol & abrasion. | Affected by degreaser solvents. | Continuous 79ºC Intermittent 107ºC | -51ºC |
| Neoprene Black | Chloroprene | Flame and weather resistant. Resistant to Petroleum, oil, ozone & high temp. | Affected by phosphate hydraulic fluids, aromatic hydrocarbons. | Continuous 93ºC Intermittent 121ºC | -40ºC |
| Urethane | Di-lsocyante Polyurethane | Highest abrasion resistance, strength & load bearing. High elongation, hardness. Resistance to Ozone & Oxygen. | Affected by ether, esters, acid, aromatics, alkallis. | Continuous 93ºC Intermittent 121ºC | -54ºC |
| Property: | Nitrile | Neoprene | Urethane |
| Tensile Strength | ✔ ✔ | ✔ ✔ ✔ | ✔ ✔ ✔ ✔ |
| Ozone Resistance | ✔ | ✔ ✔ | ✔ ✔ ✔ ✔ |
| Cut Resistance | ✔ ✔ | ✔ ✔ ✔ | ✔ ✔ ✔ ✔ |
| Abrasion Resistance | ✔ ✔ | ✔ ✔ ✔ | ✔ ✔ ✔ ✔ |
| Resistance to: | White Nitrile | Neoprene | Urethane |
| Compression Set | ✔ ✔ | ✔ ✔ ✔ | ✔ ✔ ✔ |
| ASTM #1 Oil | ✔ ✔ ✔ ✔ | ✔ ✔ | ✔ ✔ ✔ ✔ |
| ASTM #2 Oil | ✔ ✔ ✔ ✔ | ✔ ✔ | ✔ ✔ ✔ ✔ |
| Reference Fuel B | ✔ ✔ ✔ | ✔ ✔ | ✔ ✔ ✔ ✔ |
| Ketones: MEK | ✔ | ✔ ✔ | ✔ |
| Aromatics: Toluene | ✔ ✔ ✔ | ✔ | ✔ ✔ ✔ ✔ |
| Aliphatics: Hexane | ✔ ✔ ✔ ✔ | ✔ ✔ ✔ | ✔ ✔ ✔ ✔ |
| Ethyl Acetate | ✔ | ✔ ✔ ✔ | ✔ |
| Cellosilve | ✔ ✔ | ✔ ✔ ✔ ✔ | ✔ |
| Methylene Chloride | ✔ | ✔ | ✔ ✔ ✔ ✔ |
| Trichloroethylene | ✔ | ✔ | ✔ ✔ ✔ ✔ |
| Diethylene Glycol | ✔ ✔ ✔ ✔ | ✔ ✔ ✔ ✔ | ✔ ✔ ✔ |
| Isopropyl Alcohol | ✔ ✔ ✔ | ✔ ✔ ✔ | ✔ ✔ ✔ |
| Caustics: 10% NaOH | ✔ ✔ ✔ | ✔ ✔ ✔ | ✔ |
| Acids: H2S04 | ✔ ✔ | ✔ ✔ ✔ | ✔ |
Excellent ✔ ✔ ✔ ✔
Good ✔ ✔ ✔
Fair ✔ ✔
Poor ✔
