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When a worn or broken master link brings your conveyor, drive shaft, or power transmission system to a halt, every minute of downtime costs you. Whether you are a maintenance technician keeping production lines running or a hands-on maker building custom machinery, having the right duplex roller chain connecting link on hand is essential. These Full Link and Half Link Buckle master connecting links are engineered to restore your chain drive quickly and securely.
Each link is machined from carbon steel with a zinc-plated finish for corrosion resistance. The duplex (double-strand) design matches standard ISO/ANSI roller chain dimensions across a wide pitch range — from 9.525 mm (3/8 in) for compact 06B chains up to 50.8 mm (2 in) for heavy-duty 32A chains. Full Link Buckles use a spring clip retention system, while Half Link Buckles use a cotter pin for added security under high-load or high-vibration conditions.
Typical applications include agricultural equipment chain repair, industrial conveyor maintenance, go-kart and mini-bike drive chain replacement, and custom fabrication projects requiring duplex roller chain connecting links in sizes 06B, 08B, 08A, 10A, 12A, 16A, 20A, 24A, 28A, and 32A.
Available in 10 duplex chain models from 06B to 32A, covering pitches of 9.525 mm to 50.8 mm (3/8 in to 2 in) to suit a broad range of drive and conveyor applications.
Choose Full Link Buckle (spring clip) for fast field installation or Half Link Buckle (cotter pin) for applications with higher vibration or shock loads where extra retention security is needed.
The zinc plating provides a protective barrier against moisture and light corrosion, extending service life in typical indoor and semi-exposed industrial environments.
Manufactured to match standard duplex roller chain dimensions, ensuring proper fit with compatible chain strands without modification or shimming.
Designed as a direct replacement master link — no special tools required beyond a chain tool or pliers for clip installation, minimizing repair time on conveyors, drives, and machinery.
Each variant is sold as a single connecting link, so you can order exactly the quantity you need for your repair or build without purchasing unnecessary extras.
| Product Type | Duplex Row Roller Chain Master Connecting Link |
|---|---|
| Chain Standard | ISO / ANSI Duplex (Double-Strand) |
| Available Models | 06B-2, 08B-2, 08A-2, 10A-2, 12A-2, 16A-2, 20A-2, 24A-2, 28A-2, 32A-2 |
| Pitch Range | 9.525 mm – 50.8 mm (3/8 in – 2 in) |
| Link Styles | Full Link Buckle (spring clip) / Half Link Buckle (cotter pin) |
| Material | Carbon Steel |
| Surface Finish | Zinc Plated |
| Strand Count | 2 (Duplex) |
| Quantity per Order | 1 PCS |
| Inner Width | See variant options |
| Plate Thickness | See variant options |
| Pin Diameter | See variant options |
Match the model number to your existing chain's designation (e.g., 08B-2 or 10A-2). The key measurement is the pitch — the center-to-center distance between pins. Measure your chain's pitch and cross-reference: 06B = 9.525 mm, 08B/08A = 12.7 mm, 10A = 15.875 mm, 12A = 19.05 mm, 16A = 25.4 mm, 20A = 31.75 mm, 24A = 38.1 mm, 28A = 44.45 mm, 32A = 50.8 mm. Always confirm the strand count is duplex (2-strand) before ordering.
A Full Link Buckle uses a spring clip (also called an E-clip or snap clip) to retain the outer plate. It installs quickly with pliers and is suitable for most standard-duty applications. A Half Link Buckle uses a cotter pin for retention, which provides a more secure lock under high vibration, shock loads, or heavy-duty cycling. Choose Half Link Buckle when your application involves significant dynamic loading.
No. These are duplex (double-strand) connecting links designed specifically for 2-strand roller chains. The inner width and plate geometry are sized for duplex chains. Using them on a simplex chain will result in an improper fit. If you need simplex connecting links, please check our other listings.
The zinc plating provides moderate corrosion resistance suitable for indoor industrial environments, light outdoor use, and applications with occasional moisture exposure. For continuously wet, submerged, or chemically aggressive environments, consider stainless steel chain hardware. Regular lubrication will also extend the service life of the link and surrounding chain.
Full Link Buckle spring clips can sometimes be reused if they are undamaged and retain their spring tension, but it is generally recommended to install a new clip each time for reliable retention. Half Link Buckle cotter pins should be replaced each time they are removed, as bending them open can weaken the metal. Given the low per-unit cost, replacing the entire connecting link during each chain service is the safest practice.
For Full Link Buckle installation: a pair of needle-nose pliers or a dedicated chain clip tool is sufficient to seat the spring clip. For Half Link Buckle installation: needle-nose pliers to insert and bend the cotter pin. A chain breaker tool may be needed to position the chain ends for link insertion. No welding or pressing is required.
Load capacity varies by model size. As a general reference, smaller models like 06B-2 are rated for lighter conveyor and drive applications, while larger models like 32A-2 are designed for heavy industrial drives. For specific tensile strength and working load limit values for your model, please contact us to confirm — we recommend always applying an appropriate safety factor based on your application's dynamic load conditions.
