Use the Clipper hook gauge, micrometer or caliper to measure belt thickness. If the belt has an impression cover, skive cover 1" back from belt end prior to measuring. Do not cut belt carcass.
Measure pulley diameter.
The minimum pulley diameter is the smallest pulley that has a belt wrap of at least 90 degrees.
Determine hook choices
Referring to Hook Selection Chart in additional info tab at right, locate belt thickness on top of the chart and minimum pulley diameter on the left side. using the matrix, determine the hook sizes most appropriate for your application. Do not select hooks that specify a larger minimum ...