To check sheave wear, what method should be used?

The most accurate method for checking sheave wear involves measuring each groove angle. This method is essential because it allows for precise evaluation of the sheave's performance and wear characteristics. Over time, sheaves can undergo wear that alters the shape and angle of the grooves, which may affect the alignment and operation of the belt or rope running through them. Measuring the groove angle helps to determine whether the sheave is still effective in its intended application or if it requires maintenance or replacement.

In contrast, visually inspecting the external surface may not reveal critical internal wear or changes in the groove's angle, while testing the material for fatigue focuses more on structural integrity rather than specific wear characteristics related to the groove shape. Utilizing a digital caliper for dimensional checks can provide useful measurements, but without evaluating the specific groove angle, it may not fully indicate the sheave's wear condition. Thus, measuring the groove angle directly addresses the critical aspect of sheave wear that impacts its functionality.