System of Measurement System of Measurement |
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For Maximum Shaft Diameter For Maximum Shaft Diameter |
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Bore Type Bore Type |
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Machinable |
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Bushing |
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Round |
Hub Diameter Hub Diameter | Show |
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Hub Diameter Hub Diameter | Hide |
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For Shaft Type For Shaft Type |
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![]() | Round |
Sprocket Type Sprocket Type |
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Material Material |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Speed Ratio Speed Ratio |
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For Bushing Type For Bushing Type |
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Component Component |
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![]() | Gear |
About Roller Chain and Sprockets
More
About Gears
More
Sprockets for Metric Roller Chain


Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain. 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., mm | For Max. Shaft Dia., mm | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Specifications Met | Each | |
For DIN, ISO 06B Roller Chain (9.53 mm Pitch) | |||||||||
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40 | 16 | 45 | 126.96 | 30 | 70 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For DIN, ISO 08B Roller Chain (12.7 mm Pitch) | |||||||||
21 | 12 | 45 | 91.95 | 28 | 70 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
For DIN, ISO 12B Roller Chain (19.05 mm Pitch) | |||||||||
15 | 12 | 45 | 103.37 | 35 | 70 | Steel | DIN 8187, ISO 606 | 00000000 | 00000 |
Sprockets for Double-Strand Metric Roller Chain


The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain. They have an unfinished bore that’s machined to the shaft diameter size listed. Machine them to fit any shaft up to the maximum shaft diameter size. The extended hub makes these sprockets more stable and more durable than flat sprockets. They meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.
For technical drawings and 3-D models, click on a part number.
Taper-Lock Bushing-Bore Sprockets for Metric Roller Chain
While their teeth fit into metric ISO roller chain, these sprockets use taper-lock bushings to grip shafts. That means you can switch to a different diameter shaft by changing the bushing instead of machining the sprocket. Bushings mount flush inside these sprockets; secure them in place by tightening the set screws included with the bushings. These sprockets have an extended hub that makes them more stable and durable than flat sprockets. All meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.
For technical drawings and 3-D models, click on a part number.


Number of Teeth | For Bushing Style | OD, mm | Overall Wd., mm | Hub Dia., mm | Teeth Heat Treatment | Material | Specifications Met | Each | |
For ISO 08B Roller Chain (12.7 mm Pitch) | |||||||||
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21 | 1610 | 91.95 | 25 | 70 | Hardened | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
Metal Bevel Gears


A type of miter gear where one gear (sometimes called a pinion) is smaller than the other, bevel gears provide right-angle speed reduction at speed ratios ranging from 2:1 to 5:1. All are carbon steel for strength; they're compatible with plastic bevel gears. Teeth are not hardened so you can harden them to fit your application. Hardening a gear’s teeth increases its wear resistance.
A complete set consists of a gear and pinion (sold separately). For a gear and pinion to mesh correctly, they must have the same pressure angle, pitch/module, and face width. Shaft-mounted pinions come already securely fastened to a shaft.
Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.


Hub | ||||||||||||||
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Face Wd., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance (A), mm | Dia., mm | Wd., mm | Material | Each | |
Round Bore | ||||||||||||||
20 | 2.5 | 20° | 5:1 | 60 | 150 | 151 | 40 | 20 | 50 | 70 | 20 | Black-Oxide 1045 Carbon Steel | 00000000 | 0000000 |



Shaft | Hub | ||||||||||||||
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Face Wd., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | Dia., mm | Lg., mm | Mounting Distance (B), mm | Dia., mm | Wd., mm | Material | Each | |
20 | 2.5 | 20° | 5:1 | 12 | 30 | 37 | 143 | 20.2 | 115 | 83 | 25 | 8 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |