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Flat-Belt Idler Pulleys
Nylon Plastic
These pulleys spin freely on built-in bearings to maintain tension for reduced wear and vibration. They’re often used with belt tensioners (sold separately).
Nylon pulleys are lightweight and corrosion resistant.
Pulleys with ball bearings ensure proper positioning inside a tube or housing. They’re sealed to block out dust and contaminants better than pulleys with needle roller bearings.
For technical drawings and 3-D models, click on a part number.
| For Belt Wd. | OD | For Shaft Dia. | Dia. | Wd. | Groove Dp. | Material | Each | |
With Ball Bearings | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5/8" | 3 1/2" | 3/8" | 3" | 1 3/32" | 0.25" | Nylon Plastic | 0000000 | 000000 |
| 5/8" | 3 1/2" | 1/2" | 3" | 1 3/32" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 13/16" | 2.8" | 3/8" | 2 33/64" | 1 7/32" | 0.11" | Nylon Plastic | 0000000 | 00000 |
| 13/16" | 2.8" | 1/2" | 2 33/64" | 1 7/32" | 0.11" | Nylon Plastic | 0000000 | 00000 |
| 13/16" | 3 1/2" | 3/8" | 3" | 1 7/32" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 13/16" | 3 1/2" | 1/2" | 3" | 1 7/32" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 7/8" | 2.4" | 3/8" | 2" | 1 5/32" | 0.18" | Nylon Plastic | 0000000 | 00000 |
| 7/8" | 2.4" | 1/2" | 2" | 1 5/32" | 0.18" | Nylon Plastic | 0000000 | 00000 |
| 7/8" | 3" | 3/8" | 2 1/2" | 1 5/16" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 7/8" | 3" | 1/2" | 2 1/2" | 1 5/16" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 7/8" | 5.6" | 3/8" | 5 1/32" | 1 19/64" | 0.26" | Nylon Plastic | 0000000 | 00000 |
| 7/8" | 5.6" | 1/2" | 5 1/32" | 1 19/64" | 0.26" | Nylon Plastic | 0000000 | 00000 |
| 29/32" | 4 1/2" | 3/8" | 4" | 1 25/64" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 29/32" | 4 1/2" | 1/2" | 4" | 1 25/64" | 0.25" | Nylon Plastic | 0000000 | 00000 |
| 1 1/8" | 2.1" | 3/8" | 1 7/8" | 1 35/64" | 0.09" | Nylon Plastic | 0000000 | 00000 |
| 1 1/8" | 2.1" | 1/2" | 1 7/8" | 1 35/64" | 0.09" | Nylon Plastic | 0000000 | 00000 |
| 1 1/8" | 3.4" | 3/8" | 2 31/32" | 1 43/64" | 0.2" | Nylon Plastic | 0000000 | 00000 |
| 1 1/8" | 3.4" | 1/2" | 2 31/32" | 1 43/64" | 0.2" | Nylon Plastic | 0000000 | 00000 |
Flat-Belt Pulleys
Also known as paper-plant pulleys, these are made of a paper-fiber composite that minimizes belt slippage and wear.
For technical drawings and 3-D models, click on a part number.
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Belt Wd. | OD | For Shaft Dia. | Dia. | Wd. | Wd. | Dp. | Material | Includes | Each | |
| 1" | 2" | 1/2" | 2" | 1 1/2" | 1/8" | 1/16" | Paper/Fiber Laminate | One Set Screw | 00000000 | 000000 |
| 1" | 2" | 5/8" | 2" | 1 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | One Set Screw | 00000000 | 00000 |
| 1" | 2" | 3/4" | 2" | 1 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | One Set Screw | 00000000 | 00000 |
| 1 1/2" | 2" | 1/2" | 2" | 2" | 1/8" | 1/16" | Paper/Fiber Laminate | One Set Screw | 00000000 | 00000 |
| 1 1/2" | 2" | 5/8" | 2" | 2" | 3/16" | 3/32" | Paper/Fiber Laminate | One Set Screw | 00000000 | 00000 |
| 1 1/2" | 2" | 3/4" | 2" | 2" | 3/16" | 3/32" | Paper/Fiber Laminate | One Set Screw | 00000000 | 00000 |
| 2 1/2" | 2" | 1/2" | 2" | 3" | 1/8" | 1/16" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 00000 |
| 2 1/2" | 2" | 5/8" | 2" | 3" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 00000 |
| 2 1/2" | 2" | 3/4" | 2" | 3" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 00000 |
| 3" | 2.5" | 3/4" | 2.5" | 3 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 2.5" | 7/8" | 2.5" | 3 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 2.5" | 1" | 2.5" | 3 1/2" | 1/4" | 1/8" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3" | 3/4" | 3" | 3 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3" | 7/8" | 3" | 3 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3" | 1" | 3" | 3 1/2" | 1/4" | 1/8" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3.5" | 3/4" | 3.5" | 3 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3.5" | 7/8" | 3.5" | 3 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3.5" | 1" | 3.5" | 3 1/2" | 1/4" | 1/8" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3.5" | 1 1/4" | 3.5" | 3 1/2" | 1/4" | 1/8" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 3" | 3.5" | 1 1/2" | 3.5" | 3 1/2" | 3/8" | 3/16" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 4" | 4" | 3/4" | 4" | 4 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 4" | 4" | 7/8" | 4" | 4 1/2" | 3/16" | 3/32" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 4" | 4" | 1" | 4" | 4 1/2" | 1/4" | 1/8" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 4" | 4" | 1 1/4" | 4" | 4 1/2" | 1/4" | 1/8" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |
| 4" | 4" | 1 1/2" | 4" | 4 1/2" | 3/8" | 3/16" | Paper/Fiber Laminate | Two Set Screws | 00000000 | 000000 |