User Guide

Effect of Contact Wheel Diameter on
Abrasive Belt Efficiency
The diameter of the contact wheel affects belt eff i c i e n c y. A
small wheel removes more stock, faster, than a large wheel.
E ffect of Belt Speed on Cut
The higher the belt speed, measured in surface feet per minute,
the higher the rate of cut. This is due to the fact that, as belt
speed increases, more cutting edges are presented to the
workpiece in the same period of time. In addition, higher belt
speed can increase the temperature of the workpiece.
Note that the finish varies less during the last 70% of life than
during the first 30%. The lower the reading, the finer the finish.
Aused belt tends to produce a finer finish than a new one.
Throughout the booklet, when reporting a given finish as the
result of introducing a variable, the reference will be to the belt
at this 70% plateau.
E f fect of Abrasive Grade on Finish
The surface finish from a given grade changes as the belt is
used. In this example, for the sake of convenience, belt life has
been divided into two, uneven segments. The light area
represents the first 30% of belt life. The dark area represents the
last 70% of belt life.
E f fect of Belt Speed on Finish
Belt speed affects surface finish. As the chart shows, an increase
in surface feet per minute results in a finer finish. The higher the
speed, the finer the finish.