When performing a straight edge alignment on two belt driven pulleys, alignment is achieved when____points of contact are made on the straight edge.

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Multiple Choice

When performing a straight edge alignment on two belt driven pulleys, alignment is achieved when____points of contact are made on the straight edge.

When aligning belt-driven pulleys, you’re checking that both pulleys sit in the same plane and run true along the belt path. Use a straight edge across the distance between the pulleys and look for contact points on the edge of each pulley. If the setup is perfectly aligned, the straight edge will contact each pulley at two points—one near the top and one near the bottom—giving four total points of contact. This four-point contact confirms the pulleys are in line in both directions across the span, not offset or skewed. If you only get three or fewer contact points, one pulley is out of line and the alignment isn’t correct, which can lead to belt wear or tracking problems.

When aligning belt-driven pulleys, you’re checking that both pulleys sit in the same plane and run true along the belt path. Use a straight edge across the distance between the pulleys and look for contact points on the edge of each pulley. If the setup is perfectly aligned, the straight edge will contact each pulley at two points—one near the top and one near the bottom—giving four total points of contact. This four-point contact confirms the pulleys are in line in both directions across the span, not offset or skewed. If you only get three or fewer contact points, one pulley is out of line and the alignment isn’t correct, which can lead to belt wear or tracking problems.

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