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Introduction
to  Belt and
Chain Tensioners
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| Introduction
to Belt and
Chain Tensioners
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The ET, ET-PU and ETR consist of die-cast alloy bases
and mounting heads on which rollers or sprockets are attached via
spring-loaded steel sliding arms. These units are also available with an
integral "End-of-stroke" sensing switch which is not
retrofittable and must be ordered at the time of initial purchase.
The NT series consist of die-cast alloy bases, zinc-plated steel sliding arms and polyethylene heads. The ET series are especially suitable for high temperature operations over 100°C (212°F), since they are 100% metal.
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The ORIENT1 series tensioners are not spring-loaded. They have the feature of being able to swivel in any direction, both before and after installation. The teeth built into the two mating parts allow the arm to be positioned every 15° throughout the entire 360° revolution relative to the base. At each of these 15° positions two of the eight holes in the arm align with the threaded holes in the base, so that the screws supplied with the unit can fasten the arm at the desired position. While these units lack the convenience of automatic tension adjustment, their simplicity and versatility in orienting and positioning offer an advantage in certain applications.
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Quality Transmission
Components
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