A V-belt match code of B40 52 indicates that the belt is how long?

A V-belt match code like B40 52 is a standardized way to communicate the specifications of a V-belt, where the first number typically indicates the nominal length of the belt in inches. In this case, the "40" signifies that the belt's length is approximately 40 inches. However, the exact length can vary slightly based on specific manufacturing standards or variations, which is why a more precise measurement is often provided.

In this situation, the match code indicates that the belt measures around 40.2 inches in actual length. This level of precision is critical in applications requiring a close-fitting belt to ensure optimal performance in power transmission and efficiency.

Therefore, understanding the match code allows users to determine that the correct length for the V-belt designated by the code B40 52 is indeed 40.2 inches, making this the right choice.