What does the code 120-4 indicate about a chain?

The code 120-4 indicates specific characteristics of the chain, particularly focusing on the number of strands it possesses. In this case, the "4" at the end of the code signifies that the chain is a four-strand design. This is critical for understanding the load distribution and strength characteristics of the chain.

In mechanical drives, the number of strands in a chain directly affects its ability to handle higher loads and the overall efficiency of power transmission. A chain with four strands will generally be able to distribute the load more evenly than those with fewer strands, making it suitable for applications that require robust performance and durability.

Identifying the strand count through such codes is an essential part of selecting the right chain for specific mechanical applications, ensuring proper functionality and longevity in various operational environments.