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Electric Hoists

139 Results Found that Include 1,047 Products

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Electric Hoist Service Classifications

SERVICE CLASSIFICATION TOTAL EQUIPMENT RUNNING TIME MAX. START/STOPS
PER HOUR
TYPICAL AREAS OF APPLICATION
 
H4
Approaching 50% of the work period 300 High-volume handling in steel warehousing, machine shops, fabricating plants, mills and foundries. Manual or automatic cycling operations in heat-treating and plating operations.
 
 
H3 Not to exceed 25% of the work period 150 General machine shop, fabricating, assembly, storage and warehousing use, where loads and operation are randomly distributed.
 
 
H2 Not to exceed 15% of the work period 75 Light machine shop, fabricating industries, and service and maintenance work, where loads and use are randomly distributed with capacity loads infrequently handled.

How to Choose What Service Classification You Need


Determine the maximum weight you need to lift. (Include lifting, supporting and positioning devices.)

Ex: 2400 lbs. (includes pallet, drum, sling, etc.)


What is the nominal voltage (±10% of rated voltage) in your facility? (Single-phase 115 or 230V; 3-phase 208, 230 or 460V)

Ex: 230V


What speed do you want to lift the load? Industry standard for 1/8 to 1 ton is 16 ft./min. (fpm); 2 tons is 8 fpm. For flexibility, consider a variable speed lift.

Ex: 8 fpm


Measure from the point of mount to the floor.

Ex: 12 ft.


What is the actual distance the load must be lifted and lowered?

Ex: 7 ft.


Determine the number of lifts per hour for the job.

Ex: 15


How many times does an operator activate the push-button control? Rule of thumb: 8 start/stops per cycle (load lift and lower).

Ex: 120 start/stops


Hoists have a Service Classification rating. To determine the classification for your job, see the calculations below:

Ex: 12 ft.

Once a % On Time is determined, see the Electric Hoist Service Classifications to determine the hoist needed.

Selected hoist in this example should offer 2-ton capacity, 230V, 3-phase operation, 15-ft. lift, 8 fpm and have a 44% or H4 service classification. Example is based on having nominal voltage and 80°F ambient still air. Higher temperatures and/or voltages outside of nominal range will result in reduced duty cycles.

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2000 lb. Capacity Electric Chain Hoist w/Trolley, H4 C
550 lb. Capacity Electric Chain Hoist 2m FEM Classification
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A high performance electric chain hoist from Grainger is a cost-effective solution for lifting applications that require positive load engagement at multiple lift points. A single-phase chain hoist or rope hoist can be plugged into standard electrical outlets, making it ideal for mechanics and smaller machine shops. Three-phase electric hoists are typically found in larger industrial operations where they are required to handle heavy loads on a daily basis.

Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More