CEMA B and CEMA C Idlers: Standards and Prolonging Life …
Changing from a CEMA B to a CEMA C will affect the belt riding height, even if the same can is used. For example, the measurement from the base or the conveyor frame to the top of the center roll in a 4" diameter CEMA B is 7", a 5" diameter B roll is 7-1/2"; the same measurement in a 5" diameter CEMA C is 8-3/4".