Most equipment designed for grease lubrication is equipped with a purge stream. The Inpro/Seal Bearing Isolator’s innovative non-contacting design consists of a unitized stator and rotor that form a compound labyrinth. Its consistency makes it easy to seal within bearing chambers. As the inventor of the Bearing Isolator, Inpro/Seal has delivered proven permanent bearing protection for rotating equipment, including pumps, motors, pillow blocks, gearboxes and more, for over 45 years. No matter the size or complexity, Inpro/Seal® and PUMPNSEAL’S team can design a custom seal for your equipment.įor all Inpro/Seal® Bearing Protection enquiries please contact PUMPNSEAL on (08) 9302 8444. Components of a bearing isolator with the labyrinth pathway highlighted in yellow Grease Purge Grease is an easy lubricant to apply and maintain, and it can be used to prevent contamination. Outside contamination attempting to enter the bearing housing is captured in the outer labyrinth paths and expelled through a port in the stator by centrifugal force and gravityĪt PUMPNSEAL we offer full seal refurbishment for all manufacturers.Bearing lubricant is captured in the inner portion of the labyrinth and flows back to the bearing housing.The rotor and stator form a non-contact, compound labyrinth, so there is nothing to wear out. This two-part dynamic seal consists of a stator press-fitted into the bearing housing and a rotor attached to the shaft. With the latest engineering and manufacturing technology Inpro/Seal® can meet your reliability requirements with seals designed specifically for your equipment with quick, timely deliveries. Inpro/Seal® Bearing Isolators are made of high quality bronze and are designed to last for at least 100,000 hours compared to the common lip seals which usually fail after only 3,000 hours. The diagram below shows the speed limit you should adhere to based on the size of the labyrinth seal.The Inpro/Seal® Company manufactures a Bearing Isolator that will provide the highest level of bearing protection available. Due to centrifugal forces the inner ring could lift off of the shaft. Labyrinth seals are installed on a shaft with a certain type of press fit. Pressure gradients may be reduced but not be sealed. However, this doesn’t protect against liquid submersion or a pressure gradient between both sides of the seal. Bearing Isolator parts are made from tough materials such as Bronze, Nirtile rubber (NBR), Fluoro Rubber, and Polyacrylate Elastomer. This seal is designed to keep contaminants out while keeping lubrication and necessary materials in. This three-way approach offers the precision bearing a great amount of protection. Together, the rotor and stator form a multifaceted labyrinth seal. At higher rotational speeds an air barrier is formed inside the seal which also pushes out contamination. Isomag magnetic bearing isolators use superior face seal technology to protect the bearings on thousands of centrifugal machinery applications around the. Then the centrifugal force, from the rotation of the machine, throws contaminants out of the seal. The maze-like labyrinth is great because contaminants or liquids have trouble making it through the seal’s maze to the bearing. Bearing isolators are rated for surface speeds of up to 12,000 feet per. The maze-like labyrinth created between the inner and outer rings Bearing isolator technology is scalable in size, with applications ranging from 1/2-inch thru 24-inch diameter shafts.The protection a Labyrinth Seal provides is based on: But all of our GMN labyrinth seals have at least three maze-like peaks. The number of peaks included in the seal depends on the size of the labyrinth seal. Radial expansion causes maze-like peaks to form between the inner and outer rings.Custom designs are available for higher speeds, axial movement and high misalignment (STBM) conditions. The permanently assembled rotor and stator utilize labyrinth technology for complete lubricant retention and contaminant exclusion with zero shaft wear. While the seal is turning, radial pressure is strategically applied. ProTech bearing isolators are unitized two-piece, dynamic seals.Next, it’s milled to the design specs of a type “L” or “M” Labyrinth Seal.The steel inner ring is surrounded by molded aluminum.This unique design keeps contaminants out and ensures the inner and outer rings of the seal stay inseparable. Leidenfrost Seals or Mini Maze) have maze-like peaks that form between the inner and outer rings. The Production Process for a Labyrinth Seal Angular Contact Bearing Reference Chart.The function of non-contact labyrinth seals. In-depth information on dynamic seals and static seals.
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