Design Engineering

Stainless steel marine actuators


General DPN

DPN WEB EXCLUSIVE: Danaher Motion has introduced Thomson Electrak Marine Actuators. The line of linear actuators provides boat and other marine manufacturers with a source of push-pull power on watercraft.

Units offer broad load capabilities and 12 or 24 Vdc operation, drawing power only when the load is being moved for optimum efficiency and battery life. Typical marine applications include raising, lowering and holding engine hatch covers; boom control when raising or lowering the mainsail; opening, closing and holding windows; downhaul control; raising and lowering trailer hitches; and seat positioning. Electrak actuators are available with stroke lengths from 2 to 24 in. and load ratings from 25 to 1500 lb. They feature ball or acme screw drives for high or moderate load ratings, and hold loads for safety when power is off. Built-in brakes are standard on ball bearing screw models to prevent back driving. They are said to be easy to install with clevis mounting, while eliminating the need for hoses, pumps, filters, regulators and periodic maintenance.
Additional features include: weather protection seals and gaskets provide IP 56 rating; UL 1500 Ignition protected listing of entire actuator assembly on selected designs, per Coast Guard requirements, going beyond simple inclusion of an ignition protected motor; overload protection; maintenance-free lifetime lubricated gearbox; passed 200 h salt spray test per ASTM B 117-02.

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