About Roller Chain and Sprockets
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Flat Sprockets for Metric Roller Chain



With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets. Machine the unfinished bore to fit your shaft—sprockets come machined to the shaft diameter listed and are machinable up to the maximum shaft diameter size. Sprockets meet DIN 8187 and ISO 606, international standards for sprockets and roller chains.
For technical drawings and 3-D models, click on a part number.
Number of Teeth | For Shaft Dia., mm | For Max. Shaft Dia., mm | OD, mm | Overall Wd., mm | Material | Specifications Met | Each | |
For ISO 08B Roller Chain (12.7 mm Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
39 | 18 | 144 | 164.59 | 8 | Steel | DIN 8187, ISO 606 | 00000000 | 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 50 Roller Chain (5/8" Pitch) | |||||||||
39 | 3/4" | 8.12" | 39/64" | 1 3/4" | Steel | Ball | Steel | 00000000 | 0000000 |