Chain Hoist Duty Classifications

Posted by Jon F on

Chain hoists are segmented into 5 distinct duty classifications. It's very important to choose the correct hoist duty classification for your lifting application.

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H1 - Hoist Class | Infrequent or Standby Duty

The H1 hoist class designation is reserved for hoists used in infrequent or standby applications. Commonly found in Powerhouse and Utilities applications, H1 hoists are used primarily to install and service heavy equipment, where loads frequently approach hoist capacity, with periods of utilization being infrequent and widely scattered. Maximum on time = 8 min/hr. Maximum Starts = 75/hr
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H2 - Hoist Class | Light Duty

The H2 hoist class designation is reserved for hoists used in light duty applications. Commonly found in light machine and fabrication shops, H2 hoists are primarily used in shops where loads and use are randomly distributed, with capacity loads handled infrequently. Total running time does not exceed 10-15% of the work period. Maximum on time = 8 min/hr. Maximum Starts = 75/hr .
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H3 - Hoist Class | Standard Duty

The H3 hoist class designation is reserved for hoists used in standard duty applications. Commonly used in general machine shops, fabrication shops, assembly, storage, and warehousing. H3 hoists are primarily used in shops where loads and use are randomly distributed, and used more frequently than an H1 or H2 hoist. Total running time does not exceed 15-25% of the work period. Maximum on time = 15 min/hr. Maximum Starts = 150/hr
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H4 - Hoist Class | Heavy Duty

The H4 hoist class designation is reserved for hoists used in heavy duty applications. Commonly found in high volume handling applications, H4 hoists are used in steel warehouses, machine shops, fabricating plants, mills, and foundries to name a few. Total running time typically approaches 50% of the work period. Maximum on time = 30 min/hr. Maximum Starts = 300/hr
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H5 - Hoist Class | Severe Duty  Rare

The H5 hoist class designation is reserved for hoists used in severe duty applications. Commonly found in applications around bulk handling of material in combination with buckets, magnets, or other heavy attachments. Equipment is often cab operated.  Total running time approaches continuous operation. User must specify exact details of operation, including weight of attachments. Maximum on time = Up to continuous. Maximum Starts = 600/hr
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If you have any questions about duty class or which hoist would be appropriate for your application, feel free to call Jon at 800-724-4052 x101.
Chain Hoist Duty Rating

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