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Cast Iron Frame Construction Low and Medium Voltage Motors
Cast Iron Frame ConstructionLow and Medium Voltage Motors
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High performance reduces cost of ownershipCompact size reduces cost of installationNew casting construction provides low noise and lower vibrationHigh quality insulation system provides mechanical rigidity and electrical reliability
Meets World Wide 21-F Series
Expanded range of applications for an aluminum die cast rotor. This rotor construction has resulted in greater capacity, high reliability, high frequent starting duty and lower rotor inertia.
Improved bearing housing construction and a longer bearing re-greasing interval lengthened to twice that of our other series motors result in less maintenance and improved performance.
Motors with ball or roller bearings are equipped with grease supply nipple discharge devices for easy grease exchange.
Re-greasing can be done easily and safely while the motor is operating; grease inlet nipples are located on the side of the bearing housing of the frame; grease is discharged into the cassette. The pull-out direction of the grease discharging device (cassette) can be changed if necessary.
Improved ventilation flow and higher efficiency result in greater frame size capacity.
The main terminal box is located on top of the motor frame; cables can be connected at every 90° or 180° angle. Sufficient space for easy incoming cable connection is provided. The terminal box can be mounted on a slant (left and right) when required for side mount cable entry.
Highly-Reliable Aluminum Die Cast Rotor
Expansion of cast iron fin frame
Improved bearing maintenance
Main terminal box
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Three dimensional thermal conduction analysis
Magnetic field analysis
Market Needs
Using three-dimensional thermal conduction analysis tools, efficiency and ratings have been optimized for each frame size. This analysis enables us to provide a compact size motor with higher efficiency.
Quiet operation is achieved through improved cooling and magnetic field analysis.We provide low noise and low-vibration machines.
Improved cooling reduces the machine size.21-FII series motors are easy to install and transport, with a small footprint.
The 21-FII series motors are manufactured to meet ISO9001 and ISO14001, and have been certified by third parties such as LLoyd's, Baseefa, CSA, etc.
Highly efficient ventilation and cooling construction
Compact size
Quiet operation
Quality-certified by third parties
Meets international standards such as IEC, NEMA, BS, AS, etc. Degree of protection is available for IP44 to IP55.
Meets international standards
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Totally enclosed fan-cooled
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These holes on both sides are not used.
These holes on both sides are not used.
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These holes on both sides are not used.
Dimensions
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Terminal box construction
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© 2011 TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Japan. All Rights Reserved
Information provided in this brochure is subject to change without noticeM-1141.
TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Tokyo, JapanTel.: +81-3-5444-3828, www.tmeic.co.jp
TMEIC Corporation, Roanoke, Virginia, USA TMEIC Corporation, Houston Branch, Texas, USATel.: +1-540-283-2000; [email protected], www.tmeic.com Tel.: +1-713-784-2163, [email protected], www.tmeic.com
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