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When a worn or broken link brings your drivetrain to a halt mid-project, finding an exact-fit replacement fast is everything. These simplex roller chain half links are designed for cyclists, mechanics, and industrial maintenance technicians who need a dependable crank link that installs quickly and holds under load. Whether you're repairing a bicycle chain or splicing a conveyor run, the right half link makes the difference between downtime and getting back to work.
Each crank link is manufactured from carbon steel with a bushing-style construction, providing the structural integrity needed for demanding applications. Available in five standard ISO/ANSI sizes — 06B-1 (3/8"), 06C-1 (35B), 10A-1 (5/8"), 12A-1 (3/4"), and 16A-1 (1") — with pitch dimensions ranging from approximately 9.525 mm (3/8") to 25.4 mm (1"). Sold individually (1PCS), in pairs (2PCS), or in packs of five (5PCS) to suit single repairs or bulk stocking.
Typical use cases include bicycle chain repair and length adjustment, light industrial conveyor maintenance, and agricultural or power-transmission machinery servicing. Long-tail applications such as "06B roller chain connecting link," "carbon steel half link for bike chain," and "simplex bushing chain crank link replacement" are all covered by this versatile range.
Solid carbon steel body delivers the tensile strength and wear resistance required for both bicycle drivetrains and light industrial chain runs.
Covers 06B-1 (3/8"), 06C-1 (35B), 10A-1 (5/8"), 12A-1 (3/4"), and 16A-1 (1") — matching the most common simplex roller chain pitches used worldwide.
The crank link (half link) format allows precise chain length adjustment without cutting — ideal for single-speed bikes, fixed-gear builds, and conveyor tensioning.
Surface treatment helps resist rust and oxidation during normal operating conditions, extending service life in workshop and outdoor environments.
Order 1PCS for a single repair, 2PCS for a spare set, or 5PCS for workshop stocking — all at consistent per-link quality.
Dimensioned to ISO 606 / ANSI B29.1 standards, these half links integrate directly into existing simplex roller chains with no modification required.
| Product Type | Simplex Roller Chain Half Link (Crank Link) |
|---|---|
| Material | Carbon Steel |
| Chain Standard | ISO 606 / ANSI B29.1 Simplex |
| Available Sizes | 06B-1 (3/8"), 06C-1 (35B), 10A-1 (5/8"), 12A-1 (3/4"), 16A-1 (1") |
| Pitch Range | 9.525 mm – 25.4 mm (3/8" – 1") |
| Link Type | Half Link / Bushing Chain Crank Link |
| Finish / Coating | See variant options |
| Tensile Strength | See variant options |
| Pack Quantity | 1PCS / 2PCS / 5PCS (select above) |
| Application | Bicycle, Conveyor, Agricultural & Power Transmission Machinery |
Match the size designation to your existing chain's pitch. Measure the distance between the centers of two consecutive pins — 3/8" (9.525 mm) corresponds to 06B-1, 5/8" (15.875 mm) to 10A-1, 3/4" (19.05 mm) to 12A-1, and 1" (25.4 mm) to 16A-1. If you have a 35B (06C-1) chain, select that option specifically. When in doubt, check the chain manufacturer's stamping on the side plate.
A half link (crank link) adds exactly half a pitch to your chain length, allowing odd-number length adjustments that a standard full link cannot achieve. This is especially useful on single-speed and fixed-gear bicycles where the rear axle position is fixed and precise chain tension is critical. For industrial conveyors, half links also simplify tensioning without replacing the entire chain run.
These carbon steel crank links are suited for light-to-medium industrial applications such as conveyor systems, agricultural equipment, and general power transmission at moderate loads. For continuous heavy-duty or high-speed industrial drives, verify the rated working load against your application requirements. Contact us to confirm suitability for specific load conditions.
The carbon steel construction includes a surface treatment that provides baseline corrosion resistance for typical workshop, indoor, and sheltered outdoor use. For wet, marine, or chemically aggressive environments, consider applying a chain lubricant regularly or contact us about stainless steel alternatives if available.
No — 06B-1 and 06C-1 (35B) are distinct chain standards with different roller widths and inner plate dimensions despite sharing a similar pitch. Always select the exact size designation that matches your chain. Mixing incompatible link types can cause premature wear or link failure.
Most single-speed or fixed-gear chain length adjustments require just one half link. Ordering 1PCS is sufficient for a single repair. If you maintain multiple bikes or want a workshop spare, the 2PCS or 5PCS pack offers better value per link. For conveyor or machinery applications, the quantity depends on the number of splice points required.
Yes. The size designations used — 06B, 10A, 12A, 16A — follow ISO 606 naming, while the equivalent ANSI B29.1 pitches (3/8", 5/8", 3/4", 1") are noted in parentheses. The 06C-1 (35B) is an ANSI 35 series equivalent. These links are dimensioned to fit chains conforming to either standard at the corresponding pitch.
