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When a worn or undersized sprocket causes chain skipping, premature wear, or unexpected downtime on your conveyor, packaging line, or DIY drive system, the fix starts with the right replacement. This 08B stainless steel simplex roller chain sprocket is engineered for makers, maintenance technicians, and machine builders who need a dependable, corrosion-resistant drive component that installs quickly and holds up in demanding environments.
Each sprocket is machined from stainless steel and supplied with a pilot bore ready for custom boring to your shaft size. The 08B designation conforms to ISO 606 standards with a 1/2" (12.7 mm) pitch. Tooth counts range from 10T to 48T across 25 variants, covering pitch circle diameters from approximately 51 mm (2.0") for 10T up to approximately 194 mm (7.6") for 48T. Hub dimensions and bore capacity vary by tooth count — see variant options for exact figures.
Typical applications include food-grade conveyor drives where stainless steel is required for washdown resistance, light industrial automation with 08B simplex roller chain, agricultural equipment replacement sprockets, and custom DIY chain drive projects requiring a pilot bore simplex sprocket in 1/2" pitch.
Machined from stainless steel for excellent corrosion resistance in wet, washdown, and outdoor environments where carbon steel sprockets would rust prematurely.
Fully compatible with standard 08B-1 simplex roller chain at 1/2" (12.7 mm) pitch, ensuring reliable meshing and consistent power transmission.
Supplied with a pilot bore so you can machine the bore and keyway to your exact shaft specification — ideal for custom and replacement drive builds.
25 tooth count options from 10T to 48T let you dial in the exact gear ratio needed for your conveyor, automation, or DIY chain drive application.
Tooth profiles are machined to ISO 606 tolerances for smooth chain engagement, reduced noise, and extended chain and sprocket service life.
Suitable for conveyors, packaging machinery, agricultural equipment, food processing lines, and custom DIY power transmission systems using 08B simplex chain.
| Chain Standard | ISO 606 / DIN 8187 08B-1 Simplex |
|---|---|
| Chain Pitch | 1/2" (12.7 mm) |
| Roller Diameter | 5/16" (7.94 mm) |
| Tooth Count | 10T – 48T (see variant options) |
| Material | Stainless Steel |
| Bore Type | Pilot Bore (custom bore to suit) |
| Pitch Circle Diameter | See variant options |
| Hub Diameter | See variant options |
| Hub Length | See variant options |
| Max Bore Diameter | See variant options |
| Weight | See variant options |
| Surface Finish | Natural stainless (uncoated) |
| Packing Quantity | 1 pc per order |
This sprocket is designed for ISO 606 / DIN 8187 08B-1 Simplex Roller Chain with a 1/2" (12.7 mm) pitch and a 5/16" (7.94 mm) roller diameter. Do not use with 40 ANSI chain — while the pitch is the same, the roller width and plate dimensions differ and the chain will not mesh correctly.
The tooth count determines your drive ratio. Divide the driven sprocket teeth by the driver sprocket teeth to get the reduction ratio. For example, a 10T driver paired with a 30T driven sprocket gives a 3:1 reduction. Choose a smaller tooth count for higher speed output and a larger tooth count for more torque. Using at least 17T on the driver sprocket reduces chain wear and noise.
A pilot bore sprocket is supplied with a small starter bore (typically 10–16 mm depending on tooth count) that must be machined by a lathe or boring machine to match your shaft diameter. You can also add a keyway and set-screw holes at this stage. If you do not have access to machining, contact us to confirm available bore options.
Stainless steel (typically 304 or equivalent grade) offers good tensile strength suitable for light to medium duty power transmission. It is particularly valued for corrosion resistance in wet, food-grade, or outdoor environments. For heavy-duty or high-torque applications, verify the load rating against your chain working load limit. Contact us to confirm material grade if your application has specific strength requirements.
Stainless steel provides significantly better corrosion resistance than carbon steel or cast iron sprockets. It is suitable for washdown environments, food processing, and outdoor use. In highly aggressive chemical environments involving strong acids or chlorides, contact us to confirm suitability.
Yes. Pilot bore sprockets can be used on either the driver or driven shaft once bored to the correct shaft diameter. Select the appropriate tooth count for each position based on your required drive ratio. Ensure both sprockets are aligned on the same plane and that chain tension is correctly set after installation.
Simplex (single-strand) sprockets like this 08B-1 are designed for a single row of chain. Duplex (08B-2) and triplex (08B-3) sprockets have wider hubs to accommodate two or three parallel chain strands for higher load capacity. This listing is for simplex (single-strand) only — do not use with duplex or triplex chain.
