About Casters and Wheels
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Multidirectional Skate Wheels
These wheels have rollers that rotate around the wheel core to allow movement in any direction.
Wheels with a plain bore rotate freely around an axle or shaft. Wheels with a keyed bore rotate with the shaft instead of around it. This means multiple wheels placed along a shaft will rotate in sync for smooth travel. They can also be driven with a motor connected to the keyed shaft. Wheels with a bushing bore roll more smoothly than those with a plain bore. The bushing within the wheel acts as a bearing and has less friction when it spins. The bushings are plastic, so they won’t corrode.
Wheels with two or three wheels have increased surface area, so they are stable, smooth, and less likely to slip than single wheels.
Acetal wheels resist abrasion. ABS wheels are nonmarking and acid resistant. Polyurethane wheels combine the abrasion resistance of plastic with the shock-absorbing qualities of rubber.
For technical drawings and 3-D models, click on a part number.
Wheel | ||||||||
|---|---|---|---|---|---|---|---|---|
| Dia. | Wd. | Color | For Axle Dia. | Cap., lbs. | Overall Wd. | Temperature Range, °F | Each | |
Plain Bore—1 Wheel | ||||||||
Acetal Plastic | ||||||||
| 1.9" | 5/8" | Blue and Gray | 1/4" | 10 | 5/8" | -40° to 190° | 00000000 | 000000 |
| 2" | 5/8" | Blue and Gray | 1/4" | 10 | 5/8" | -40° to 190° | 00000000 | 00000 |
| 2" | 3/4" | Black and Gray | 5/16" | 10 | 3/4" | -40° to 190° | 00000000 | 00000 |
| 2 3/8" | 1" | Black and Gray | 5/16" | 20 | 1" | -40° to 190° | 00000000 | 00000 |
| 3 5/32" | 1 3/16" | Black and Gray | 5/16" | 45 | 1 3/16" | -40° to 190° | 00000000 | 00000 |
ABS Plastic | ||||||||
| 2" | 5/8" | Blue and White | 3/8" | 25 | 5/8" | 0° to 175° | 0000000 | 0000 |
| 2" | 5/8" | Blue and White | 1/2" | 25 | 5/8" | 0° to 175° | 0000000 | 0000 |
| 4" | 1 1/4" | Blue and White | 3/4" | 100 | 1 1/4" | 0° to 175° | 0000000 | 00000 |
Plain Bore—2 Wheels | ||||||||
Acetal Plastic | ||||||||
| 1.9" | 1 5/16" | Blue and Gray | 1/4" | 25 | 1 5/16" | -40° to 190° | 0000000 | 00000 |
| 1.9" | 1 5/16" | Blue and Gray | 5/16" | 25 | 1 5/16" | -40° to 190° | 0000000 | 00000 |
| 1.9" | 1 5/16" | Blue and Gray | 1/2" | 25 | 1 5/16" | -40° to 190° | 00000000 | 00000 |
| 2" | 1 5/16" | Blue and Gray | 5/16" | 25 | 1 5/16" | -40° to 190° | 00000000 | 00000 |
| 2" | 1 1/2" | Black and Gray | 5/16" | 25 | 1 1/2" | -40° to 190° | 000000 | 00000 |
| 2 11/32" | 2" | Black and Gray | 5/16" | 45 | 2" | -40° to 190° | 000000 | 00000 |
| 3 5/32" | 2 3/8" | Black and Gray | 5/16" | 90 | 2 3/8" | -40° to 190° | 000000 | 00000 |
ABS Plastic | ||||||||
| 2" | 1 3/16" | Blue and White | 3/8" | 25 | 1 3/16" | 0° to 175° | 0000000 | 00000 |
Polyurethane Plastic with Nylon Plastic Hub | ||||||||
| 1 31/32" | 1 1/16" | Black and Gray | 1/4" | 65 | 1 1/16" | 0° to 175° | 00000000 | 00000 |
| 1 31/32" | 1 1/16" | Black and Gray | 5/16" | 65 | 1 1/16" | 0° to 175° | 00000000 | 00000 |
| 1 31/32" | 1 1/16" | Black and Gray | 1/2" | 65 | 1 1/16" | 0° to 175° | 00000000 | 00000 |
| 1 31/32" | 1 1/16" | Blue and Gray | 5/16" | 30 | 1 1/16" | 0° to 175° | 00000000 | 00000 |
| 1 31/32" | 1 1/16" | Gray and Red | 5/16" | 55 | 1 1/16" | 0° to 175° | 00000000 | 00000 |
| 1 31/32" | 1 1/16" | Gray and Red | 1/2" | 55 | 1 1/16" | 0° to 175° | 00000000 | 00000 |
| 4 15/16" | 1 11/16" | Black and Gray | 3/8" | 275 | 1 11/16" | 0° to 175° | 00000000 | 00000 |
| 4 15/16" | 1 11/16" | Black and Gray | 1/2" | 275 | 1 11/16" | 0° to 175° | 0000000 | 00000 |
Plain Bore—3 Wheels | ||||||||
Polyurethane Plastic with Nylon Plastic Hub | ||||||||
| 4 15/16" | 2 7/16" | Black and Gray | 1/2" | 350 | 2 7/16" | 0° to 175° | 00000000 | 000000 |
Keyed Bore—2 Wheels | ||||||||
ABS Plastic | ||||||||
| 2" | 1 3/16" | Blue and White | 1/2" | 25 | 1 3/16" | 0° to 175° | 0000000 | 00000 |
Bushing Bore—1 Wheel | ||||||||
ABS Plastic with Polyethylene Plastic Hub | ||||||||
| 2" | 5/8" | Blue and White | 1/4" | 25 | 13/16" | 0° to 175° | 0000000 | 0000 |
Omni-Directional Wheels
The angled rollers on these wheels allow vehicles to move forward, backward, sideways, and turn in place when each wheel is used with an independent drive. Often used on automated vehicles and in robotics, they are also known as mecanum wheels. A left and a right wheel must be paired together to use all of the movement combinations.
Use hubs to connect the wheel to a shaft.
Wheel | Roller | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Wd. | Bolt Circle Dia. | Cap. per Wheel, lbs. | Hardness Rating | Hardness | Nonmarking Wheels | No. of | Dia. | Temp. Range, °F | Each | |
Left Wheel | |||||||||||
Without Bearings | |||||||||||
| 4" | 2 3/16" | 1 7/8" | 200 | Soft | Durometer 80A | Yes | 9 | 3/4" | 35° to 110° | 0000000 | 000000 |
| 6" | 2" | 1 7/8" | 200 | Soft | Durometer 80A | Yes | 15 | 3/4" | 35° to 110° | 0000000 | 000000 |
| 8" | 3 1/2" | 1 7/8" | 500 | Soft | Durometer 80A | Yes | 12 | 1 1/4" | 35° to 110° | 0000000 | 000000 |
Right Wheel | |||||||||||
Without Bearings | |||||||||||
| 4" | 2 3/16" | 1 7/8" | 200 | Soft | Durometer 80A | Yes | 9 | 3/4" | 35° to 110° | 0000000 | 00000 |
| 6" | 2" | 1 7/8" | 200 | Soft | Durometer 80A | Yes | 15 | 3/4" | 35° to 110° | 0000000 | 000000 |
| 8" | 3 1/2" | 1 7/8" | 500 | Soft | Durometer 80A | Yes | 12 | 1 1/4" | 35° to 110° | 0000000 | 000000 |
