Lever Hoists

A lever hoist is a very versatile piece of equipment with many names including a puller and ratchet hoist. A lever hoist operates with a ratchet and pawl type system. When the lever is pulled up and down, the chain moves around the ratchet and pawl which lifts,...

HMI HOIST DUTY CLASSIFICATIONS

Download in PDF format Hoist Duty Typical Areas of Application Operational Time Rating Uniformaly Distributed Work Periods Infrequent Work Periods Max on Time(Min/Hr) Max #(Starts/Hr) Max on Time(Cold Start) Max #(Starts/Hr) H1 Powerhouse and Utilities, infrequent...

CMAA CRANE DUTY CLASSIFICATIONS

Download in PDF format CMAA Classification Description Further Explanation Class A Standby or infrequent service This class normally includes installation and maintenance cranes. This equipment usually operates at slow speeds for precise handling with long idle...

AMP DRAW BASED ON HORSEPOWER

Amp draw measures how much power your machine consumes during operation.  Horsepower is a unit of power that is the rate at which work is done.  Here we are determining the amp draw of an electric chain hoist based on the horsepower of the motors.  Knowing this value...

Installing & Maintaining Hoisting Equipment in an Outdoor Environment

Hoists and cranes installed outdoors are subject to internal corrosion as a result of their exposure to the elements. This often overlooked issue can disable equipment that appears to be in good condition. Power plants, wastewater treatment facilities, utility...

Chain Hoist vs. Wire Rope

What Criteria should I look at when deciding to purchase an electric chain hoist or a wire rope hoist? When comparing electric chain hoists and wire rope hoists for a lifting task you should consider the application, environment, capacity and duty cycle. Equipment...