3MVB Series

WARNING!!! Increasing the speed of a unit could cause fan and motor failure. If you are unaware of the outcome that sheave changing can make then you should hire a professional to do this work for you.

3MVB Three Groove

Size a new Belt??

New Sheave Size Dia:

New Model #:

Bore Sizes:

P1 Bushing Range 1/2--1 3/4
Q1 Bushing Range 3/4--2 11/16
R1 Bushing Range 1 1/8--3 3/4

Directions:Click inside each white box above to enter your numbers. If any number is above 1000 do not add the comma "," as in 10,000 cfm. If you are unsure what Motor Sheave Operating Diameter is then click HERE. When all of the information is correct in all three boxes then left click the Calculate button.