Model M-19 Adjustable Driver Pulleys - Imperial
Hi-Ratio Series Variable Speed Drives
Wide Variable Speed Belts
1/3 through 15 HP
1/3 through 15 HP
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Pulleys in the WB series use wide variable speed belts for the most efficient
transmission of torque through the widest possible speed range. These pulleys
are two-side moveable for the best possible belt alignment when used with a
grooved companion sheave. However, the location of the belt centerline close
to the bore end of the pulley reduces the overhung load on motor bearings and
seals. Precision-calibrated springs maintain correct pressure, keeping the belt
properly tensioned and minimizing belt slip.
WB pulleys can be used on both adjustable and fixed center drives. They offer maximum service when lubricated through a convenient grease fitting and occasionally run through the speed range.
Belt Selection
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WB pulleys offer optimum speed ratios because they are used with wide
variable speed belts. Pulley flanges are designed to match standard belt angle
and width, so each pulley model must be matched to the correct belt to insure
full speed range and maximum torque capacity.
Adjustable Center Drives
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The typical adjustable center drive consists of: the WB pulley mounted on the
motor shaft; a grooved
