Buyer's Guide
CMAA has organized this Buyer’s Guide to promote standardization and to assist prospective buyers
of electric overhead traveling cranes in selection of equipment most suitable for their applications.
The Crane Manufacturers Association of America, known as CMAA, is an organization of
over thirty leading American manufacturers of electric overhead traveling cranes and
components.
CMAA has published standardized
crane specifications for almost
sixty years. Two publications in
particular, CMAA 70 – Specifications for Top Running Bridge & Gantry Type Multiple Girder Electric
Overhead Traveling Cranes and
CMAA 74 – Specifications for Top Running & Under Running Single Girder
Electric Traveling Cranes Utilizing Under Running Trolley Hoist, are recognized throughout the United
States as the de facto standards of industrial crane design.
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 standardization of cranes,
uniform quality and performance. EOCI published standardized specifications in 1949 and again in 1961.
CMAA Specification 70,
first published in 1971, superseded ECOI 61. Since 1971,
CMAA Specification 70
has been republished several times with changes and updates managed by
CMAA’s Engineering Committee.
CMAA Specification 74
was first published in 1974 to provide similar
design information on single girder cranes.
Thank you for your interest in CMAA and its Members.