Choosing the right durometer for contact wheels on a 2×72 belt grinder is crucial for achieving optimal results in beveling, stock removal, and finishes. High durometer wheels (70A to 90A) offer rigidity for aggressive stock removal, while low durometer wheels (40A to 60A) provide flexibility for contouring and blending. Understanding these dynamics enhances grinding efficiency and reduces belt wear.

A 2×72 belt can track well until pressure is applied, causing it to drift. The issues often stem from a worn-out gas strut or side-to-side play in the tension arm. To stabilize performance, replace the gas strut and ensure the tension arm is secure to maintain proper alignment under load.