Crane Selection Guide:
As per as Indian Standards Specification 807 and
3177 cranes have been basically divided into
Class-I Light Duty ( M 1, M 2 )
There are normal maintenance which are no in
constant use. Cranes for periodical maintenance of
plant and machinery come under this category maximum
1000 working hour per annum their speeds are slow
and the structures are light.
Class-II Medium Duty ( M 3, M 4, M 5 )
This class perhaps covers the largest number of
cranes used by the industry. In workshops,
Foundries, Processing Plants, ware-houses and in
fact every area where a fair degree of activity
exists. These cranes are designed for maximum 2000
working hours per annum.
Class-III Heavy Duty
( M 6, M 7 ).
For Workshops and production Shops, Where the
cranes, in addition to normal handling work, also
become a part of production process by helping
production particularly in those workshops which run
2/3 shifts per day .The total workload of these
cranes is about 3000 hours per annum.
Class-IV Extra Heavy Duty ( M 8 )
This class includes very special cranes of highest
importance in steel industries, cement industries,
Storage Houses& in some other selected industries.
these are designed for continues duty operations..