Contact sealsĬontact seals are friction devices with a finite life. With the air comes contamination in the form of moisture and dust, which migrates into the bearing housing if protection is not used. The result is air being drawn in from the outside environment as the housing approaches equilibrium. Let’s examine the technologies currently available to help end users determine which technology best meets their application requirements.īecause cool air is denser than warm air, the bearing housing quickly will consume what air is inside and begin to create a vacuum. Other manufacturers have developed their own bearing isolators with varying degrees of success. The original design evolved over the years but remains a basic, two-piece compound labyrinth seal that sets the industry standard for bearing housing protection. ![]() Pumps and motors, the most prevalent industrial rotating equipment in the world, benefitted most from the upgrade. When compared to traditional sealing methods, the bearing isolator represented a paradigm shift in bearing housing protection and equipment reliability. The rotating equipment on which they were installed had short mean times between failure relative to the bearing’s rated life. Some customers learned to adjust their maintenance practices accordingly, but it was a hard fight because these designs did not adequately protect the bearing lubrication from environmental contaminants. Before then, lip seals and traditional labyrinth seals were the only real options available for machine designers and end users. In the 1980s, Inpro/Seal pioneered and marketed the first compound labyrinth seals, bearing isolators. Inpro/Seal’s team of engineers can help specify the best size and configuration for your application, and our production team is able to respond quickly to emergency shutdown situations and meet fast turnaround requirements.Shaft seals have been around since Archimedes invented the first pump, but only in the 20th Century was shaft sealing given adequate attention. The innovative design allows the maximum amount of lubrication to reach the faces, which provides optimum conditions for a long sealing life. Precision-lapped faces energized by rare earth magnets create a liquid-tight seal suitable for a wide variety of applications. ![]() VBMag Bearing Isolators are IP66 rated to meet high industry standards for bearing protection. “The addition of VBMag expands Inpro/Seal’s product portfolio, allowing us to better support our customers with the best bearing protection solution for any application.” ![]() “The VBMag Bearing Isolator combines decades of knowledge and engineering expertise to deliver a reliable, long-lasting, leak-free seal for a variety of challenging applications,” said Chris Solfelt, Product Manager. The VBMag Bearing Isolator delivers long-term performance and reduces the need for unscheduled downtime and maintenance costs. With the VBMag Bearing Isolator, there is zero shaft wear, making it the superior choice for applications that historically used elastomeric lip seals which can wear quickly at the point of contact, and damage the shaft. Utilizing magnetically energized faces to create a liquid-tight seal, the VBMag Bearing Isolator is proven to protect against lubrication loss and contamination ingress in challenging applications, such as flooded, high oil splash, or oil mist lubrication environments. Inpro/Seal, the inventor of the Bearing Isolator, continues its legacy of developing innovative, reliable sealing products to prevent bearing failure with the introduction of a new magnetic bearing isolator: VBMag. Superior Sealing in Challenging Lubrication Environments
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