When we build a Class B 10 ton overhead crane, it is an entirely different set of components than when we build a Class E 10 ton overhead crane. CMAA bases classifications on the crane’s number of lift cycles and average load intensity.


In general, the class E crane is going to have heavier duty rated motors, end trucks and more steel. How do FEM, HMI and CMAA classifications compare?

FEM Duty Classifications - Free download as PDF File (.pdf), Text File (.txt) ... FEM Code crane classification. ... 144.59€ 1.004. CMAA is the Crane Manufacturers Association of America. Below is a list of FEM technical guidance documents classified by product category/groups. Please note that the duty classification of a crane has nothing to do with the capacity of the crane. CMAA traces its roots to the Electric Overhead Crane Institute, known as EOCI, which was founded in 1927 by leading crane manufacturers of that time to promote the standardization of cranes as well as uniform quality and performance. Selection of suitable FEM group Instruction: Select the load spectrum type About Us CRANE 1 Blog ContentDetermining the Service or Duty Classification of Cranes & Hoists Determining the duty or service classifications when specifying new cranes and hoists can be tricky due to the fact that there are numerous standards that use different methods of determining duty ratings.

Consult our Crane Advisor — an online tool that offers recommendations based on your specific lifting-application needs.

CMAA Crane Service Classes CMAA has established crane service classes so that the most economical crane for a particular installation may be specified in accordance with Specifications for Top Running Bridge & Gantry Type Multiple Girder Electric Overhead Traveling Cranes-No. 70 or Specifications for Top Running and Under The FEM group is determined by the daily operating time and the load spectrum; The selection of the correct FEM group enables us to find the most suitable size of hoist for different applications; The FEM group also specifies the ED% and the starting frequency of motors. CMAA is the Crane Manufacturers Association of America, Inc., an independent trade association affiliated with the Material Handling Industry. You may also see CMAA abbreviated as MHI, which refers to CMAA’s affiliate, Material Handling Industry. The following quick, four-step process will tell us what you need so that we can help match the right crane for you. CMAA hoist duty classifications.