TECHNOLOGY REPORT | CHAIN HOISTS
while being highly durable and easy to operate for the end user. "Visualization in factory operations
is a trendy concept today. Connecting production machines and high- performance computers, it allows manufacturers and operators to see at a glance which machine was used in what way. The same goes for hoists and cranes. Soon it will be taken for granted that positioning anything to be assembled will be decided automatically, and the operation will be monitored in real time. For its network connectivity, this balancer has a pioneering role in that," says Kazuhiro Nishikawa, product developer, Kito. Kito Corporation began accepting orders
for its new 75kg and 250kg model of the Kito Electric Chain Balancer, from April this year in Japan.
PRODUCT REDESIGN Columbus McKinnon Corporation (CMCO) recently made some modifications to its chain hoist portfolio, including its CM Series 653 ratchet lever hoist, which has been redesigned to be lighter and more compact for ease of use and for even lower headroom applications. With a shorter handle length and
optimized weight, the CM Series provides a safer and more comfortable grip and is secured from sliding. On selecting a manual chain hoist, Joe
R Kito has launched the Kito Electric Chain Balancer
Runyon, vertical market specialist, Oil & Gas, CMCO, explains that the rated capacity of the hoist should be at least as high as the weight of the heaviest load to be lifted and no higher than the rated capacity of the pad eye, monorail system or other overhead structure from which the hoist will be suspended. When determining the capacity
requirement for an electric or pneumatic hoist the manufacturer must not only consider the weight of the heaviest load to be lifted but determine the Mean Effective
Load (MEL) and apply the MEL factor of .65. “Manual hand chain hoists have the
lowest purchase price, making them ideal for applications involving temporary or infrequent use, low capacities, short lift height and when power sources are not available. Electric and pneumatic hoists offer faster lifting speeds, are more ergonomic and are better suited than manual hoists for heavy-duty cycles, high capacities and long lifts and Air hoists require a substantial volume of compressed air for operation and are often used for applications involving long lifts or high duty cycles and in areas where electric power is impractical or unavailable,” says Runyon. “Electric hoists can have a lower
purchase price than pneumatic hoists. They do not require the purchase and installation of an air compressor and are normally quieter than air hoists to operate. If suitable electric power is available, electric hoists are selected more often than pneumatic for most general lifting applications. Electric hoists can also be equipped with special motors and controls to make them suitable for use in designated hazardous areas.” For more information, the American
R CMCO CM Series 653 ratchet lever hoist
Society of Engineers (ASME) and The Hoist Manufacturer’s Institute (HMI) have developed and published standards for hoists, including hoist duty ratings. These duty classifications are based on factors, including the number of lifts performed per hour over a given work period, the average and maximum load lifted, the frequency at which the maximum load is lifted, the average distance the load is raised and lowered, and the maximum number of stops and starts per hour. ●
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