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When a worn or undersized sprocket causes chain skip, premature wear, or misalignment on your conveyor, bike drivetrain, or industrial drive system, finding the right tooth count and bore fit matters. This 06B flat chain drive sprocket is engineered for makers, maintenance technicians, and DIY builders who need a reliable, drop-in replacement or upgrade for standard 06B roller chain applications.
Each sprocket is machined from carbon steel with a flat-plate hub profile. The tooth form is cut to ISO 606 / BS 228 standards for 06B chain, which runs a 3/8" (9.525 mm) pitch. Available tooth counts span 10T through 42T, with outer diameters ranging from approximately 38 mm (1.50") on the 10T up to approximately 130 mm (5.12") on the 42T. Bore diameter and keyway dimensions vary by tooth count — see variant options for confirmed bore specs.
Typical use cases include light conveyor drives where a compact sprocket-and-chain loop replaces belt systems, bicycle or e-bike jackshaft builds requiring a specific gear ratio, and small agricultural or workshop machinery needing a replacement drive wheel. Long-tail search terms this product covers: 06B sprocket 10 tooth replacement, 3/8 pitch roller chain sprocket 42T, ISO 606 flat sprocket for conveyor drive.
Tooth geometry conforms to ISO 606 / BS 228 for 06B chain, ensuring smooth engagement, reduced noise, and even load distribution across all teeth.
Choose from 10 to 42 teeth in a single product listing to dial in your exact drive ratio — no need to source from multiple suppliers.
The flat hub profile keeps axial footprint minimal, making these sprockets ideal for space-constrained jackshaft and conveyor builds.
Machined from carbon steel for solid tensile strength and wear resistance under continuous cyclic loading in drive applications.
Order 1 PCS for a single replacement or 2 PCS for a matched pair — useful when replacing both driver and driven sprockets simultaneously.
Dimensioned to standard 06B sprocket specifications so they slot into existing chain drive assemblies without custom machining in most applications.
| Chain Standard | ISO 606 / BS 228 — 06B-1 |
|---|---|
| Chain Pitch | 3/8" (9.525 mm) |
| Tooth Count Range | 10T – 42T (select variant) |
| Hub Style | Flat plate |
| Material | Carbon steel |
| Outer Diameter | See variant options |
| Bore Diameter | See variant options |
| Hub Width | See variant options |
| Keyway | See variant options |
| Finish | See variant options |
| Available Quantities | 1 PCS / 2 PCS |
Divide your desired speed ratio by the driver sprocket tooth count to find the driven sprocket tooth count, or vice versa. For example, a 2:1 reduction with a 15T driver requires a 30T driven sprocket. Lower tooth counts produce higher speed; higher tooth counts produce more torque.
Yes — these sprockets are machined to ISO 606 / BS 228 tooth geometry for 06B-1 single-strand chain with a 3/8" (9.525 mm) pitch. They are not compatible with 05B, 08B, or ANSI #40/#50 chains, which have different pitches.
The sprockets are machined from carbon steel, which provides solid tensile strength suitable for light-to-medium duty conveyor, bicycle jackshaft, and workshop machinery drives. For heavy shock-load or high-RPM industrial applications, confirm the specific tooth count's load rating before ordering.
Carbon steel has moderate corrosion resistance. For outdoor or humid environments, apply a light coat of chain lubricant or anti-rust spray to the sprocket teeth and bore. If your application requires higher corrosion resistance, consider stainless steel alternatives.
Bore diameter varies by tooth count. Please refer to the variant detail page or contact us to confirm the bore size for your selected tooth count before ordering, especially if you need a specific shaft fit.
Yes — 06B chain is commonly used on bicycle jackshaft and mid-drive e-bike builds. Select the tooth count that matches your target gear ratio. Verify the bore diameter fits your shaft and that the flat hub clears your frame or mounting plate.
It is generally recommended to replace both sprockets together with a new chain when one shows significant wear. Mixing a new sprocket with a worn chain (or vice versa) accelerates wear on the new component. The 2 PCS option makes it convenient to replace a matched pair in one order.
