How to Measure the Chain Size

Chains are very common in our daily lives. When purchasing or customizing chains, in addition to the working load limit, it is also crucial to provide accurate dimensions, such as:

• Outer Length
• Inner Length
• Outer Width
• Inner Width
• Wire Diameter
• etc.

These basic parameters directly affect the strength, weight, and applicable scenarios of the chain. This article will focus on introducing the measurement methods for various chain dimensions.

For more detailed information, please feel free to contact Tuohai.

Measurement Methods for Welded Chains

Welded chains are typically categorized into short-link chains, long-link chains, and passing link chains, etc. The measurement methods for all styles are the same, typically measuring the outer length (inner length), outer width (inner width), and wire diameter, etc.

Since the welded joints of metal welded chains may exhibit slight protrusions or bends, in order to obtain more accurate measurement results, you should avoid the weld joint when measuring the welded chain.

Measurement Methods for Weldless Chains

There are many types of non-welded chains, and their shapes vary greatly. Therefore, the measurement parameters for different non-welded chains will also differ.

Measuring the Dimensions of Conventional Non-Welded Chains

For some common non-welded chains, such as double loop chains, single loop chains, jack chains, and register chains, etc., are made from wire wound from various materials. The dimensions that need to be measured for these chains are shown in the figure below, including outer length, outer width, and wire diameter, etc. Using these dimensions, we can accurately select or customize the weldless chain we need.

Measuring the Dimensions of Unconventional Non-Welded Chains

For unusually shaped non-welded chains, such as sash chains, in addition to the necessary parameters such as outer length and width, it is also necessary to measure their thickness, as shown in the figure below.

Tips for Measuring Chain Size

• When measuring chain links, a vernier caliper is required. A tape measure may only be used when measuring the overall length of the chain.
• Measure multiple chain links and take the average value.
• If the chain has a thick coating or covering on its surface, such as hot-dip galvanizing or powder coating, the coating or covering should be removed, or accurately record its thickness.
• After long time use, the dimensions of the chain may change due to wear or prolonged stretching.
• When recording measurement results, use either metric or imperial units consistently to avoid misunderstandings.

Whether for industrial applications or decorative purposes, accurately measuring and providing the dimensions of the chains when purchasing is very important for its use, replacement, and maintenance, it is also the key to ensuring proper fit and normal operation. If you need more detailed information on how to measure chain dimensions, please feel free to contact Tuohai.

For product specifications related to this topic, see Stainless Steel Proof Coil Chain and Tow Chain.