The Nippon double stage cooling gearbox can be found at industrial sites all around the world. While the Nippon gearbox for Cooling Towers are a fantastic cooling solution, there is one weakness in the system. The stock bearing protection is a lip seal on the input shaft. This lip seal wears a fret in the shaft over time, and also wears out itself resulting in oil leakage.
Isomag magnetic face bearing isolators cure the problem of oil leakage, and put an end to the oily mess in your cooling tower water. A reduction of water treatment chemical usage is also attributed to the use of Isomag bearing isolators, as well as a reduction in maintenance costs. Isomag bearing isolators do not damage your gearbox's shaft and increases your MTBF because they last significantly longer than the default lip seal.
If you have a similar problem, don't hesitate to contact Isomag customer service , and let them know about your gearbox application in greater detail. A brochure for Isomag bearing isolators for cooling tower gearboxes can be found here.