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Mechanical design
General
The roller table motors supplied by ABB are squirrel
cage motors which are specially designed for use
with frequency converters. Robust in construction,
the motors are fully sealed to withstand the tough
conditions in rolling mills.
The motors are low speed units intended for direct
connection to rollers. The pole number and frequency
can be selected, avoiding the need for gearboxes and
therefore saving on maintenance costs and increasing
the overall efficiency of the drive.
Assembly dimensions and shaft heights are in
accordance with IEC 60072-1. The normal motor
mounting position is B3/IM1001. Flange mounting (IM
B5/IM3001) is possible for frame sizes 180-250 on
request.
The enclosure of the motors is protected to IP55.
Higher degrees of protection, up to IP 65, are also
available. If required, the stator frame of M3RP motors
can be pressurized with air to prevent any ingress of
water or dust.
ABB offers roller table motors in sizes 180 to 450, with
smaller sizes available on request.
Roller table motors
Technical data for totally enclosed squirrel
cage three phase motors
IP 55 ¨C IC 410 ¨C Insulation class F, temperature rise class B
Motors and frequency converters - solutions for rolling mills
that incorporate ABB's wealth of application know-how
ABB meets the demands of the rolling mill environment
by combining the expertise of two areas within the
Group. By bringing together squirrel cage motors from
ABB Motors and frequency converters from ABB Drives,
ABB can supply electrical drive systems that are
tailored to the needs of the industry.
ABB Motors has been developing and
