![]() ![]() Inpro-Seal Bearing Isolators ensure permanent bearing protection – increasing the reliability of your rotating equipment. Outside contamination attempting to enter the bearing housing is captured in the outer labyrinth paths and expelled through a port in the stator.īearing lubricant is captured in the inner portion of the labyrinth and directed back into the bearing housing.Ĭustom engineered designs can be split for easy installation and come with an unconditional performance guarantee. When at rest, the patented Inpro-Seal VBX ring effectively seals the labyrinth – blocking condensation and other contaminants from entering the bearing housing.ĭuring operation, centrifugal force lifts the VBX ring away from contact with the stator to create a non-wearing permanent seal. This is a general search form more detailed search forms are available. ![]() Lip seals consume, on average, 147 W of power. They create a barrier between moving and stationary surfaces in applications such as rotating shafts and pistons rings. Labyrinth bearing isolators positively seal without contact. Both of these design features are incorporated into one bearing isolator. Dynamic seals include oil seals, hydraulic and pneumatic seals, exclusion seals, labyrinth seals, bearing isolators, and piston rings. ProTech features the most effective labyrinth design for both dirt exclusion and oil. ![]() In addition, ProTech utilizes labyrinth technology to keep contaminants out preventing bearing damage common with contamination intrusion. This is accomplished by using non-contact labyrinth seal technology. Labyrinth seals and bearing isolators for pumps. Bearing isolators are rated for surface speeds of up to 12,000 feet per. working in concert to form a non-contacting compound labyrinth seal – with no wearing parts. The seal adds value by facilitating grounding which decreases downtime due to bearing pitting / fluting damage from stray current. Bearing isolator technology is scalable in size, with applications ranging from 1/2-inch thru 24-inch diameter shafts. Inpro-Seal's Bearing Isolator is a two-part dynamic seal consisting of a stator and a rotor. We are also fitting more and more Inpro-seal bearing isolators. We can do this with a number of methods, from using high grade sealant to act as a gasket on all spigot joints, to resin filling the chamber between terminal box and stator to help improve IP performance. It was the start of an ongoing journey to supply permanent bearing protection to industrial rotating equipment.JJ Loughran have been asked more and more to help improve electric motors IP performance especially in food & beverage industry were electric motors and gearboxes work in very challenging environments. The first Bearing Isolator was installed in 1975 at the Grain Processing Corporation plant in Muscatine, Iowa, to address a critical issue. It would perform much better than any other labyrinth seals made by pump manufacturers because it would hold off any contamination without contact.” “We finally found a combination of rotor and stator that would keep oil in, but also ward off contamination up to and including a fire hose. “It took about six months to design something that would work in severe hose-down conditions,” said Orlowski. As he experimented with labyrinth seals, Orlowski started with the challenging application of pumps in the corn processing industry, which were cleaned daily – with a fire hose. Orlowski then turned his attention to solving this issue on process pumps, where rubber lip seals were standard. Orlowski and his team retrofitted the API refinery pumps with standard API labyrinth seals, made with a rotor and a stator. It went through there and into the bearing housing, causing bearing failure and a catastrophic wreck.” One of the single spring mechanical seals started to spray water and of course the water was coming out of the seal and going right through and under the lip seal, which was worn. The building structure began to suffer and several windows had fallen from the 110-story building onto the street below.Īccording to Orlowski, “They were refinery pumps with rubber lip seals, which is a rarity. Fortunately, once returned to the proper level, bearing isolators will generally stop leaking and return to normal function. Prefer A Metallic Isolator Parker’s Millennium® bearing isolator is much more than just a bronze o-ring holder. One of the chilled water pumps had failed, though, resulting in a cooling system failure. The idea of a labyrinth seal is to prevent leakage and contamination by creating a difficult path for both substances to follow. Orlowski was working in the pump distribution and repair business when he was called out to repair and retrofit 16 HVAC pumps at Chicago’s Sears Tower.Įven though it was February in Chicago, the south side of the building was supposed to be cooled because of the intense daytime sun load. A labyrinth seal is a type of bearing isolator that combines elements of contact and non-contact seals in a single component. Falling Windows: The Origin of the Bearing Isolator ![]()
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