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How to Accurately Describe Your Required Chain?
Time : 2026-03-04
- Introduction Industrial chains are core mechanical components used for power transmission, material conveying, and heavy‑duty lifting. Accurate chain identification and specification description are critical for procurement, maintenance, and equipment reliability. This guide helps you define chain requirements clearly and avoid mismatches or production downtime.
- Three Core Dimensions for Chain Identification To identify any standard roller chain, confirm these three key measurements: Pitch (P): Center distance between two adjacent pins; the basis of chain classification. Roller Diameter (d₁)：Outer diameter of the roller, affecting meshing with sprockets. Inner Width (b₁): Inside distance between inner link plates, determining fit with sprocket teeth. Measurement Tip: Use a caliper and take the average of multiple pitches for higher accuracy.
- Common Chain Series & Differences A Series (ANSI / American Standard) High load capacity, good wear resistance, high precision. Suitable for heavy‑duty transmission and conveying machinery. B Series (European Standard) Simple structure, good adaptability. Ideal for light‑to‑medium duty mechanical drives. Leaf Chain Series AL Series: Light‑duty, used in manual forklifts and small electric lift trucks. BL Series: Heavy‑duty, for diesel forklifts, container handlers, and balancing systems. LL Series: Light‑duty, similar to AL, for small forklift applications.
- Structural Details Connection Types Connecting Link Spring clip type: Recommended for pitch < 19.05 mm. Cotter pin type: Recommended for pitch > 25.4 mm. Press‑fit connecting link: For high‑power transmission. Offset Link: Used for odd-numbered links; not recommended for heavy loads or high speeds. Riveted Chain: Pins are permanently riveted for high-speed and heavy-load conditions. Number of Links Even number: Standard connection with connecting link; preferred for strength. Odd number: Requires offset link; lower strength, avoid in critical applications. Special Attachments Common attachments include A‑1, A‑2, K‑1, K‑2, D‑1, D‑3, SA‑1, SA‑2, SK‑1, SK‑2, WA‑2, WSA‑2, GK‑1, etc. Specify if you need scrapers, guides, extended plates, or custom fixtures.
- Application & Operating Conditions Provide these details to select the optimal chain: Environment: Temperature, humidity, dusty, corrosive, water‑exposed, food‑grade. Load & Speed: Transmitted power, running speed, start/stop frequency. Installation: Sprocket center distance, sprocket teeth count, shaft alignment. Service Life: Expected lifetime, maintenance frequency, lubrication conditions.
- Materials & Surface Treatments Carbon Steel: General-purpose transmission and conveying chains. Alloy Steel: High‑strength, heavy‑load, long‑life chains. Stainless Steel (304 / 316L): Corrosion‑resistant, for food, pharmaceutical, and marine use. Surface Finishes: Black oxide, zinc plating, nickel plating, Dacromet, DLC coating. 7. Standards & Naming Rules Common standards: ISO 606, ANSI B29.1, GB/T 1243. Example marking: 16A‑2 × 60 16A: Chain size and series 2: Double strand 60: Total number of links 8. Common Mistakes to Avoid Unclear model parameters and missing key dimensions. Incorrect measuring methods leading to wrong data. Confusing A series and B series, causing fit failure. Ignoring connection type, link count, attachments, or working conditions. 9. About Hangzhou Ocean Industry Co., Ltd. We provide full‑series industrial chains, including transmission chains, conveyor chains, leaf chains, stainless steel chains, and custom chains for harsh environments. Our technical team supports chain selection, dimension verification, application matching, and customized solutions to ensure stable and efficient equipment operation.
