weg roller table motors presentation rollertable training english
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WEG Smart SolutionsRoller Table motors
Cesar Augusto Hilbig
Diogo Abramo Casali
WEG Motores International Sales Dept
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1
Which Scenario Do We Have?
Roller Table Presentation (Ver. Jun/13/12)
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2
Which Failure We Prevent?Blocked bearings
Short circuit between phases
Corrosion in internal parts
Drag between rotor and stator
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3
WEG Smart Solutions = Roller Table Motor
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4
Roller Table Advantages
Extended lifetime in constant work
Speed variation through VFD
Constant torque with no ventilation
Robust design suitable to the lamination
conditions.
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Roller Table Design OverviewFrame 132M up to 200
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Roller Table Design OverviewFrame 225S M up to 400
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DE Dynamic W3 Seal - IP66
Vring seal inner
labyrinth ring
Labyrinth ring
Free volume fulfilled
with grease
Oring seal between shaft
and labyrinth ring
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Enshields Sealing
Oring seal between
motor frame and end
shield
Permatex on
joinseals to avoid
ingress of water and
dust
Regreasing systemFrame 225 and above (optional for 200 and below)
Extended joint
between bells and
frame
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Terminal Box Seal - IP66
Double CompressionCable Glands
6 Pin BMC
Terminal Block
Grounding lug inside terminal box
Double external grounding on motor frame
Detail of the drain
Metal drain
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Corrosion Resistant
High Quality
Polyurethane Top CoatThickness 240-340 m
Salt Spray 12000h
(C5 as per ISO 12944)
Epoxy Layer on
Internal Surfaces
(tropicalization)
Stainless Steel ShaftAISI/SAE 420
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Motor Frame
Radial fins avoid layer of
dust and/or water
accumulation on motor;
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Insulation System
100% Suitable for
VFD Stress Operation
WISE Generation III
Class 200C
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Torque & Power CharacteristicsFrame 132 to 225
Frequency (Hz)
Torque(Nm)
Po
wer(kW)
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Torque & Power CharacteristicsFrame 250 to 400
Frequency (Hz)
Torque(Nm)
Po
wer(kW)
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Product Scope
Frames from 132 up to 400;
ZZ bearings up to frame 200;
Protection degree IPW66;
Sintered metal drain;
Exclusive W3 labyrinth seal;
Terminal block BMC;
Shaft threaded center hole;
Stainless steel nameplate;
Polyurethane top coat (212P);
Insulation class H;
Mounting B3 up to 200 & B3T from 225 to 400;
Thermal protection PTC 155C.
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Finance Advantage
Acquisition Cost
Maintenance / Energy Cost
Investment
Savings
ROL
LERTABLE
CHOICE
STANDAR
MOTORCH
OICE
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A Straightforward Solution
Direct Drive
No transmission loss
No transmission maintenance
No transmission failure
No loss due ventilation system
No fan and fan cover damage
No control devices for auxiliary motor
Natural
Cooling
ROLLER TABLE
CONVENTIONAL SOLUTION
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Customers
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References
Roller Table Presentation (Ver. Jun/13/12)
WEG Roller Table motors cut production stoppages & improve productivity for
GERDAU steel rolling mill plantWEG Roller Table motors are overcoming adverse operating conditions to provide improved productivity and reliability, and substantial energy
savings at the GERDAU steel rolling mill plant in Brazil.
Rolling steel is a tough process, the rolling machines being subjected to aggressive conditions such
as high temperatures, severe mechanical impacts and permanent contact with water.
The machines need, therefore, to rely on high technology, highly resistant
components to withstand the tough working conditions, and avoid the unplanned
production outages that result in financial losses. For example, Gerdaus steel mill
produces 12- thousand tons of rolled steel per month, an unexpected 2- hour
interruption in the production process, would result in the loss of 120-tons of rolled
steel.Unfortunately, production outages were a common problem for GERDAU, as the
majority of motors installed in the plant were quite old and did not provide the
necessary features to sustain reliability. In particular, the motors were not equipped
with adequate shaft sealing systems. This allowed water to penetrate into the motor
bearings, shortening their life.
To solve this problem, the existing motors have been replaced by new, high
technology Roller Table motors, designed and manufactured by WEG based upon
Gerdaus requirements. These motors ensure higher productivity, improved
efficiency and deliver lower maintenance costs.
The Roller Table motors are designed with features that enable them to operate with
complete reliability, despite contact with corrosive agents, such as water, steam,
dust, high temperatures, and despite being subjected to a high number of start-ups
and frequent rotation reversals. The features include radial fins, and IPW66 degree
of protection, together with WEGs innovative W3Seal sealing system for added
protection against water ingress.
Since the Roller Table motors were delivered, in late 2008, they have proved
themselves, performing reliably and fully meeting Gerdaus expectations. As a
result, Gerdau is benefiting from far greater certainty in its operations, because the
company no longer faces the previous production shut-downs resulting from
electric motor failures.
http://www.weg.net/uk/Media-Center/News/Products-Solutions/WEG-Roller-Table-motors-cut-production-stoppages-improve-productivity-for-GERDAU-steel-rolling-mill-plant -
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Applications
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Applications
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Applications
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Merci
DankeGracias
Obrigado
Thank You
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Questions and suggestions, please contact WEG:
Cesar Augusto Hilbig ([email protected])
Diogo Abramo Casali ([email protected])
Contact