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LV Earthrings

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Our LV Earthring is the #No 1 Best Selling VSD Bearing Protection Ring in South Africa. Priced and designed for the South African Market and tested in some of the best known and largest blue chip companies in South Africa with a 100% Performance record at every factory. Earthring LV is for motors from 0.75 kw to 400 kw.

On-site Installation

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On-site Installation - Earthrings (Pty) Ltd is the only manufacturer that offers on-site installation throughout Sub-Saharan Africa. We have installed Earthrings in Nigeria, Malawi, Swaziland, Zambia etc. The installation is very easy and staff normally go on to doing it themselves.

HV Earthrings

HV Earthings

High Voltage Earthrings are custom made for all large electrical motors rated above 400kws or 600 volts. They are 6.5mm thicker than the LV Earthrings, have 3 x more fiber, use different materials and are custom manufactured to the exact specifications of each electrical motor taking all factors into account such as the KW, Amps, Rpm, Volts, Shaft size etc.  These exact specifications are necessary due to the considerably higher shaft currents as well as higher costs of these larger motors.

“Earthrings 350” Replaces Insulated Bearings & Protects Motors

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“Earthrings 350” is the result of 5 years of intense research, its unique benefit is that it is designed to be used completely by itself for all Low Voltage motors up to 350 kw. No insulated bearings or other protection is required.
The average Insulated bearing is between 8-10 times the cost of an equivalent standard bearing, can take up to 2 weeks for delivery, and must be replaced at every service interval, making maintenance costs much higher, also the one insulated bearing or insulated housing method does not remove all the currents, it only removes Eddy currents and not Capacitive currents created by variable speed drives, whereas “Earthrings 350” protects bearings from both currents.
Insulated bearings are not guaranteed by any bearing manufacturer, as in many cases the very thin Aluminum oxide coating (insulation layer) has been known to fail due to high currents as well as scratches created during fitting or fretting (bearing slipping as housing gets older).
The “Earthrings 350” is based on the science of “Ac current Skin Effect”, the use of highly conductive micro fibers focuses on removing the volts, and the extensive increase in the amount of fibers (thousands of more micro fibers per square mm) removes the currents, making it the most effective bearing protection ring of its kind in the World.

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