How To Measure A Belt For A Motor. Apply the following formula to determine a new replacement belt length: The width dimensions on our site do not include the hub of your pulley.
Get a belt a little smaller as the string has no stretch to it. Rotate the v belt to place the paint mark against the flat surface. Put together the part number:
You may need to use a little tape to hold the string in place.
3) look for size on drive belt first ( e.g pj483 or 190j ) 4) measuring the length. Subtract 1/8 inch from the measurement and that gives you the length of belt needed to fit the distance you just measured. Use a cloth measuring tape (not a steel one) and wrap it around the outside of the belt. A (1/2) b (21/32) c (7/8) d (1 1/4) e (1 1/2) measuring belt length with an old v belt place a mark on the side of an old v belt with a white paint marker.