Electrical hoists are material handling tools used to lift, move, lower, and position difficult-to-handle large equipment, products, and devices. They are a tool that alleviates potential stress and strain on workers and provide a safe solution for the movement of oversized materials. Electrical hoists are normally used in shipyards, docks, warehouses, large ships, and metal processing factories. The hoist mechanism of an electrical hoist is attached to a load-bearing gantry, jib crane, or steel I beam. There are many electrical hoist configurations; there is an electrical hoist suitable for nearly every application. Read More…
Electrical HoistsAn electrical hoist is a mechanism similar to a crane used to lower, raise and relocate objects and machinery too heavy for manual lifting. While some are powered by hydraulics, or for lighter loads, are hand cranked, most hoists are electrically powered for a wide range of lifting applications.
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Zelus distributes and services electric chain hoists, electric wire rope hoists, air hoists, manual hoists, chain trolley hoists, variable-speed air chain hoists and a variety of other chain hoist types — lever, hand, ratchet lever.
As a Factory Authorized R&M Master Distributor and Crane Builder, Wolverine provides its customers with the finest production built crane components available. Some of the products we provide include gantry cranes, overhead cranes, chain and wire rope hoists and much more. Regardless of your needs, we design, build, and install custom systems to fit any process or application.
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Electrical hoists vary according to the types of mechanisms they have, such as chains, ropes, or wire ropes. Other variabilities include motor and reel type, the main lifting components. Regardless of differences, all electric hoists have certain common elements.
Hoist Motor – Electric hoist motors have different lifting capacities, ranging from 1- 10 tons up to 16-32 tons, and can lift objects 9 -100 feet high. Hoist motors have a high starting torque and are classified by their duty cycle. A duty cycle ranges from constant hourly use to 25% use. The power supply or voltage for a hoist motor can be a single-phase motor or a 3-phase motor with weatherproofing for outdoor use.
Drum – The drum has a reel shell, reel, and guide with the reel housing connected to the electric hoist motor. Reels have a roll surface with spiral grooves to separate the coils as they are wound in a single layer. The guide is mounted on the reel and ensures that the rope is neatly arranged.Chain electric hoists have sprockets that pull the chain and place it in a container. It provides a straight vertical lift that is suited for precision lifting.
Rope – Wire rope hoists use a cable to lift loads and are guided into a grooved drum. Wire rope is a preferred lifting tool consisting of multiple steel wires woven in a helical pattern around a core. The rope is flexible, strong, and can handle the stress of being bent and twisted.
Chain – Chain electric hoists have a chain that raises a load straight up without lateral movement. They are low maintenance, easy to install, and can be used in different environments. Chain hoists are used with lighter loads and are used with all types of cranes.
Hook – Electric hoist lifting hooks vary in function, design, and capacity. All lifting hooks have a base attached to the hoist chain or wire rope and a hook to hold the load. The three common types of hooks are grab hooks, slip hooks, and self-locking hooks. Grab hooks have a tight throat that grabs a load, while slip hooks have a wide opening, which makes it easy to fasten them to a load. Self-locking hooks automatically close and lock when lifting a load.
Control – Electric hoists can have wired control or be remotely controlled. Each control type uses a keypad to position the load. Controls can activate the raise, lower, and reposition the hoist and its load. For larger electric hoists, operators may be positioned in a cab or cabin where they control the function of the hoist.
Limit Switch – The limit switch is a safety device that controls an electric hoist’s lifting height and weight load. It cuts power to the motor when the programmed limit is reached. The weight limit switch is activated by the deflection of the wire rope when the hook lifts the load.
Electric Hoist Features
The key features of an electric hoist have an impact on its price, effectiveness, and usage. Features must be compatible for an electric hoist to perform well.
Power – Electric hoists use very powerful motors capable of lifting several tons. When choosing a motor, manufacturers should consider how many lifts per hour they need the electric hoist to perform. More lifts per hour can impact the motor’s temperature. Electric hoists come in a range of voltages and phases. For example, the voltage range for single-phase electric hoist motors is 110v to 230v, while three-phase motors can reach 400v. Manufacturers should also check whether they have an accessible power supply to install an electric hoist in the optimal location. Insufficient power can lead to several adverse problems and even endanger operators.
Chain or Rope – Choosing whether to use a chain or wire rope depends on what will be lifted and the surrounding environment. Organizations assign electric hoists a duty rating to help manufacturers determine the best use of the hoist. Chain electric hoists are easy to install, less expensive, and smaller than wire rope hoists. However, chain electric hoists have a lower capacity. On the other hand, wire rope hoists are large, complex, and expensive but easily handle heavier loads.
Mounting – Electric hoists can be hook, lug, or trolley mounted. With hook-mounted hoists, a hook is used to connect the hoist to a trolley or fixed position. Hook hoists use a chain because it’s essential to keep the load directly below the hoist. Lug-mounted hoists have a lug attached to the top of their frame or are integrated into the structure of the electric hoist frame. The lug is used to attach the hoist to a trolley, I beam, or a structure in a building. It is a durable, common mounting configuration. Trolley-mounted electric hoists are attached to the wheels of a trolley by a hook, clevis, or lug suspended from the trolley. A trolley has a separate motor from the electric hoist’s motor. The movement of the hoist and trolley is along the flange of the lower half of an I beam. Electric hoists are the most common kind of hoists. They are less expensive to operate than pneumatic hoists. Electric hoists are energy efficient, operate quietly, and lift heavy industrial loads.
Choosing the Proper Electrical Hoist Manufacturer
To ensure the most positive outcome when purchasing an electrical hoist from an electrical hoist manufacturer, it is important to compare several companies using our directory of electrical hoist manufacturers. Each electrical hoist company has a business profile page highlighting their areas of experience and capabilities, along with a contact form to directly contact the manufacturer for more information or request a quote. Review each electrical hoist business website using our patented website previewer for a better idea of what each company specializes in. Then, use our simple RFQ form to contact multiple electrical hoist businesses with the same form.
Electric Hoists Power Pages
Electric hoists are material handling equipment used for lifting, lowering, and transporting materials and products. They are powered by an electric motor and have a controller to adjust the lifting parameters...
A gantry crane is an overhead crane that has an overhead beam supported by freestanding legs and moves on wheels, a track, or rail system carrying a bridge, trolley, and hoist. Workshops, warehouses, freight yards, railroads, and shipyards use gantry cranes as their lifting solution as a variation of overhead or bridge cranes...
A jib crane is a lifting device with an arm or boom that extends off the main body of the crane to provide extra reach and has a lattice design to lower the weight added to a load. The design of jib cranes allows them to work...
A hydraulic lift is a device for moving objects using force created by pressure on a liquid inside a cylinder that moves a piston upward. Incompressible oil is pumped into the cylinder, which forces the piston upward. When a valve opens to release the oil, the piston lowers by gravitational force...
An overhead crane is a type of heavy duty machinery that is capable of moving extremely heavy loads and equipment from one location to another in a safe and precise manner using the overhead space of a manufacturing facility. Due to the nature of the work they perform...
Wire rope is a collection of metal strands that have been twisted and wound to form the shape of a helix with the purpose of supporting and lifting heavy loads and performing tasks that are too rigorous for standard wire...