The Harrington NER single speed electric chain hoist with hook mount operates on three phase power and has a compact aluminum body with low headroom; and a fan-cooled motor with a 60-minute short term duty rating and an American Society for Mechanical Engineers (ASME) H4 rating for heavy duty work. The body housing on this hoist is sealed for protection from dirt, moisture, and harsh environmental conditions. This hoist has a standard count hour meter that tracks “lowering starts” and “on time” to help facilitate timely maintenance. The Harrington NER single speed electric chain hoist has a direct current (DC) electromagnetic brake that does not release unless the motor is energized. This hoist has a load sheave with deep-groove pockets to support the load chain, and help reduce vibration and chain wear; a chain guide made of heavy cast iron for durability, which can be removed without disassembly; and a grade 80 nickel-plated, heat-treated load chain for resistance to wear. The mount and load hooks are made of forged carbon steel and designed to resist fracture under stress, and the load hook swivels 360 degrees. It also has a friction clutch with carbon friction material for consistent hoist performance over the recommended temperature range of -4 degrees F to 104 degrees F, and humidity of 85 percent or less. Control voltage is 110V (optional 24V). The Harrington NER single speed electric chain hoist is typically used to lift and move loads for industrial or commercial applications, but also may be used in other industries with similar applications. This hoist is built to comply with American National Standards Institute /American Society for Mechanical Engineers (ANSI/ASME) B30.16 and HST-1M standards; and the American National Standards Institute/National Fire Protection Association (ANSI/NFPA) 70, National Electrical Code. When used according to manufacturer’s recommendations, this hoist is covered by a three-year warranty from date of shipment against defects in workmanship or materials; and the direct current (DC) brake is covered by a 10-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.