About Roller Chain and Sprockets
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Sprockets for ANSI Roller Chain
Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.
For technical drawings and 3-D models, click on a part number.
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
| 25 | 5/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 3/4" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 7/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/8" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 3/16" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/4" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 3/8" | 4.26" | 1" | 3 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 7/16" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/2" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
| 25 | 5/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 3/4" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 7/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/8" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 3/16" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/4" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 3/8" | 4.26" | 1" | 3 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 7/16" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/2" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
Machinable-Bore Sprockets for ANSI Roller Chain
For a custom fit on your shaft, these sprockets can be machined to your exact specifications. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Shaft Dia. | For Max. Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 25 | 5/8" | 2 1/4" | 4.26" | 1" | 3 1/4" | Steel | 00000000 | 000000 |
Wear-Resistant Sprockets for ANSI Roller Chain
Hardened teeth give these steel sprockets increased wear resistance for a long service life. Mount them onto your shaft and secure with a set screw—no machining necessary.
For technical drawings and 3-D models, click on a part number.
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
| 25 | 5/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 3/4" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 7/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/8" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 3/16" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/4" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 3/8" | 4.26" | 1" | 3 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 7/16" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
| 25 | 1 1/2" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
Corrosion-Resistant Sprockets for ANSI Roller Chain
Mount these sprockets onto your shaft and secure with a set screw—no machining necessary. Made of stainless steel, they withstand washdown conditions and harsh environments.
For technical drawings and 3-D models, click on a part number.
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | ||||||||||
| 25 | 5/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 0000000 |
| 25 | 3/4" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 7/8" | 4.26" | 1" | 3 1/4" | 3/16" | 3/32" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 1" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 1 1/8" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 1 3/16" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 1 1/4" | 4.26" | 1" | 3 1/4" | 1/4" | 1/8" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 25 | 1 1/2" | 4.26" | 1" | 3 1/4" | 3/8" | 3/16" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
Lightweight Sprockets for ANSI Roller Chain
Made of nylon, these sprockets are lightweight, quiet, and corrosion resistant. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Shaft Dia. | For Max. Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 25 | 1/2" | 1 1/2" | 4.26" | 1" | 3 1/4" | Nylon Plastic | 00000000 | 000000 |
Flat Sprockets for ANSI Roller Chain
Also known as A-plate sprockets, these have a slim profile that fits in narrow spaces. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Shaft Dia. | For Max. Shaft Dia. | OD | Overall Wd. | Material | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | |||||||
|---|---|---|---|---|---|---|---|
| 25 | 5/8" | 3 27/64" | 4.26" | 9/32" | Steel | 0000000 | 000000 |
Wear-Resistant Idler Sprockets for ANSI Roller Chain
Hardened teeth give these steel sprockets increased wear resistance for a long service life. Designed to rotate freely on built-in bearings, idler sprockets maintain constant tension on your drive by pressing against your chain to take up slack and reduce wear and vibration. They are for use with roller chain tensioners.
Ball bearings are double sealed to keep dirt out.
For technical drawings and 3-D models, click on a part number.
Bearing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Type | Material | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | |||||||||
| 25 | 5/8" | 4.26" | 23/32" | 1 9/16" | Steel | Ball | Steel | 00000000 | 000000 |
Quick-Disconnect (QD) Bushing-Bore Sprockets for ANSI Roller Chain
The same sprocket can be used with different shaft diameters; choose a compatible quick-disconnect bushing with the bore size you need.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Bushing Style | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | |||||||
|---|---|---|---|---|---|---|---|
| 25 | SH | 4.26" | 13/16" | 2 11/16" | Steel | 00000000 | 000000 |
Split-Tapered Bushing-Bore Sprockets for ANSI Roller Chain
Since these sprockets grip bushings more tightly than taper-lock sprockets, they’re often used in high-torque applications. The same sprocket can be used with different shaft diameters; choose a compatible split-tapered bushing with the bore size you need.
Sprockets for P1- and Q1-Style bushings have a keyway that fits a matching key on the bushing.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Bushing Style | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 40 Roller Chain (1/2" Pitch) | |||||||
|---|---|---|---|---|---|---|---|
| 25 | P1 | 4.26" | 2 3/16" | 3" | Steel | 0000000 | 0000000 |