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Vfd Drives Manufacturer - India

price: contact company for price

In fact, electrical damage has become the most common cause of bearing

failure in variable frequency drive controlled AC motors.

In a phenomenon called bearing fluting, the operational frequency of the VFD causes concentrated pitting at regular intervals along the race wall, forming washboard-like ridges. Fluting can cause excessive noise and vibration, which, in an HVAC system, can be magnified and transmitted by ductwork throughout the entire building. By the time this is noticeable, bearing failure is often imminent.

Clearly, protecting motor bearings from catastrophic failure is critical to maintaining the sustainability of VFD-controlled motor systems.


Company Contact:


  • Phone: 912267059033

  • Address: Daffodil, Sepal, Sama Savli Road, Behind Gangotri, Baroda Gujarat, India

  • Email: Email


Published date: October 15, 2013 -

  • Business Description: VFDs.in Variable Frequency Drive used to control a motor's speed or

    torque can net substantial energy savings. But VFDs, also known as

    adjustable speed drives and variable speed drives (VSD), can induce

    unwanted motor shaft voltages. A maintenance free, long life shaft

    grounding ring that protects attached equipment as well as the motor's

    bearings is warranted.

    Bearing protection for induction motors

    A bearing protection ring is available for any NEMA or IEC motor size. It can be factory installed inside new motors or quickly and easily retrofitted even in the field using conductive epoxy (at right).

    VFD, used to control a motor's speed or torque, can net substantial savings in energy costs, up to 30 percent. Because of this, they have been cited as a key technology to make industrial HVAC systems, automated assembly lines, and other processes more energy efficient.

    But VFD, also known as variable speed drives (VSD) and ac drives, can induce unwanted motor shaft voltages. Without effective mitigation, these electrical discharges can destroy bearings, causing premature motor failure.

    In fact, the costly repair or replacement of failed motor bearings can wipe out any savings that an AC drive yields and severely diminish the reliability of an entire motor driven system. And when a VFD controlled motor fails, warranty claims against motor and VFD manufacturers may not pan out. Because systems that use VFDs are so varied, the liability question is a hot potato.

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