An alloy steel worm drives a high strength bronze worm gear (drive sleeve). The worm shaft is supported on anti-friction tapered roller bearings with external seals provided to prevent loss of lubrication (sealed radial ball bearings available). Single reduction.

• Drive sleeve is supported on anti-friction tapered roller or ball thrust bearings.
• Ductile iron housing proportioned to support the rated capacity.
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Designed to have a motor or gear reducer directly coupled to the lift shaft for faster, more precise operation and higher duty cycles. Inline.

• Standard trunnion pin mounting.
• Easily adapted for use with servo motors and planetary gear reducers.
• Available with keyed actuator tubes.
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Same as DD with a second stage gear reduction to provide higher thrust at lower speeds. Single and double reduction.

• Reducer and motor can be mounted in eight possible positions for maximum flexibility.
• Variety of worm gear ratios resulting in a wide range of speeds and thrust capacities.
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