The Harrington ED dual speed electric chain hoist with hook mount for single phase power has a die-cast aluminum body with low headroom for tight workspaces and mobility. This hoist has a dual-brake system with a Weston-style mechanical load brake and an electric regenerative brake, which generates electricity to help power the motor. The standard pendant has a push-button cord with separate up and down momentary contact buttons, and an adjustment screw to change low speed from zero to 100 percent of maximum speed for operational comfort, control, and flexibility. An upper limit switch helps prevent over winding and over lifting. This hoist includes a small direct current (DC) motor rectifier that converts alternating current (AC) to DC to reduce weight, generate less heat, and help maximize duty ratings (maximum run time and number of starts the hoist can perform in a given time period). Voltage is 120-1-60, and control voltage is 120V Direct. The Harrington ED dual speed electric chain hoist is typically used to lift and move loads for industrial or commercial applications, but also may be used in residential workshops. This hoist complies with American National Standards Institute /American Society for Mechanical Engineers (ANSI/ASME) B30.16 and ANSI/ASME HST-1M standards, and is built in compliance with American National Standards Institute/National Fire Protection Association (ANSI/NFPA) 70, National Electrical Code. When used according to manufacturer’s recommendations, this product is covered by a one-year warranty from date of shipment against defects in workmanship or materials.
Hoists are devices that use relatively small amounts of force to lift, lower, and move heavy loads. Power hoists transfer a small, motor-generated force across a series of gears that multiply the force into one large enough to lift the designated load. Their lifting mechanisms consist of a motor; drive shaft and gear set; and a chain, rope, or wire, with a hook attached to it for lifting loads. Hoists are commonly suspended from structures by hook or trolley mounts, and are typically used in a variety of industries such as transportation, construction, manufacturing, mining, plumbing, foundry, and material handling.
Load capacity is the maximum rated load a hoist can handle. While manufacturers may indicate they have tested a hoist beyond its limits, operators should never attempt to lift a load heavier than the maximum rated load. Lifting speed describes, in feet per minute (fpm), how quickly the hoist can lift the maximum rated load. Lift is the maximum vertical distance the load hook can move a load. Headroom is the distance from the bottom of the load hook to the top of the hoist. This is the minimum amount of vertical space needed for the hoist to hang freely and operate correctly. Duty ratings describe the maximum amount of time a hoist can run and the number of times it can start over a given time period under various conditions such as intermittent use, or short and lengthy periods of operation.
Harrington Hoists manufactures hoists and cranes. The company, founded in 1854 and headquartered in Manheim, PA, meets International Organization for Standardization (ISO) standard 9001.