The LN Profile is manufactured in standard shaft diameters ranging from 1/2” to 10” (12.7mm to 250mm). O-Rings: Come standard as FKM, but are also available in: USDA 3A Sanitary standards for food and dairy product contact.Low wear, low coefficient of friction.Higher temperature applications can be handled with alternate materials.Standard chemical compatibility charts recommend PTFE for 160 chemicals in comparison to 11 for bronze and 30 for stainless steel.Ĭharacteristics of the various PTFE materials offered: This superior chemical resistance allows for the standardization of a single material within a plant, eliminating the cost associated with stocking duplicate sizes in expensive stainless steel or other exotic materials. Stator & Rotor: ProTech uses, proprietary PTFE compounds making it well suited for harsh environments, such as citric acids and strong caustics. Vertical Down: Compatible for grease, and dry.Vertical Up Mounting: Not recommended.Horizontal Mounting: Compatible for grease, oil and dry.The LN Profile shaft mounting positions and respective compatible lubrication types are: The LN design is excellent for retaining grease and oil splash, however the oil level must be below the inboard oil drainback (non-flooded). It is ideal for sealing and protecting the bearing housings of electric motors, pumps, mixers, gear boxes, blowers and custom equipment against heavy water spray and dry contaminants. The LN profile is our standard design for non-flooded applications where the seal must be mounted flush in the housing. This unitized design also maintains the seal’s integrity by keeping high-pressure water spray, vibration or axial movement from separating or increasing the gap between the rotor and stator. The rotor and stator are assembled at the factory where they are permanently unitized, allowing for a one-piece installation.
This eliminates costs associated with having to recondition the sealing surface of the shaft. Since the rotor spins with the shaft, it will not wear, groove, or damage the shaft. The rotor uses an external O-ring to maintain a static press fit on the shaft.
#Bearing isolator series
The stator has a sophisticated series of grooves to retain oil splash, the most effective design for oil retention when compared to various competitor designs. DesignĪn external O-ring on the outside diameter of the ProTech stator allows for easy seal installation, maintains a press fit in the seal housing, and provides a static seal against the bore for lubricant retention. When used to replace lip seals, the LN Profile lowers shaft cost due to liberal surface finish specifications. We can custom engineer solutions to meet exacting specifications for either new or retrofit applications. It also accommodates the greatest axial movement in the industry, reducing a major factor that causes labyrinth seal failure. The non-contact design has virtually no torque consumption, will not wear or groove shafts, and allows for non-lubricated dry running.
Because it is a precision-machined seal, costs can be eliminated on tooling charges, allowing retrofit of most shaft and bore combinations. Labyrinth sealing technology applied to high performance materials allows the Parker ProTech LN Profile bearing isolator to operate far beyond the shaft speed limits of standard radial lip seals and avoids shaft wear. By keeping lubrication in and contaminants out, ProTech ™ bearing isolators provide reliable, two-way sealing protection of rotating equipment for extended bearing life. Machine downtime due to bearing failure is costly.