LX –WRAP-AROUND SHAFT MOUNT ISOLATOR WITHOUT DRAIN PORT FOR VERTICAL UP APPLICATIONS | Product Series

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LX –WRAP-AROUND SHAFT MOUNT ISOLATOR WITHOUT DRAIN PORT FOR VERTICAL UP APPLICATIONS

LX –WRAP-AROUND SHAFT MOUNT ISOLATOR WITHOUT DRAIN PORT FOR VERTICAL UP APPLICATIONS

This wrap-around non-contact labyrinth bearing isolator is designed with specialized geometry for vertical up mount rotary shaft equipment. Designed with no drain port, the LX retains heavy oil splash and excludes aggressive contaminants.

Especificaciones técnicas

  • Tipo de operación: Non-Flooded
  • Velocidad de corte máxima: Up to 5,000 fpm (25 m/s) ft/min, up to 25 m/sec
  • Rango de presión: 0 psi
  • Movimiento axial: 0.020 inch, 0.51 mm
  • Excentricidad: 0.020 inch, 0.51 mm
  • Temperatura de funcionamiento: -40° to 250 °F / -40° to 121 °C °F, -40 to 121 °C
  • Diámetro del eje: 0.492 to 10.000 inch, 12.5 to 254 mm
  • Diámetro interno: 0.886 to 11.575 inch, 22.5 to 294 mm
  • Material de la junta: PTFE
  • Material de la junta tórica: FKM is standard; alternates available

Descripción completa del producto

AVAILABILITY: Due to the customized nature of this product, only a sampling of Parker's shaft and bore diameters are shown. We can manufacture virtually any size in standard shaft diameters ranging from 0.492” to 10” (12.5 mm to 254 mm).

PERFORMANCE ADVANTAGES
Machine downtime due to bearing failure is costly. By keeping lubrication in and contaminants out, Parker’s ProTech™ bearing isolators provide reliable, two-way sealing protection of rotating equipment for extended bearing life. Labyrinth sealing technology applied to high performance materials allows the Parker ProTech LX Profile bearing isolator to operate far beyond the shaft speed limits of standard radial lip seals and avoids shaft wear. Because it is a precision-machined seal, costs can be eliminated on tooling charges, allowing retrofit of most shaft and bore combinations.

The non-contact design has virtually no torque consumption, will not wear or groove shafts, and allows for non-lubricated dry running. It also accommodates the greatest axial movement in the industry, reducing a major factor that causes labyrinth seal failure.

We can custom engineer solutions to meet exacting specifications for either new or retrofit applications. When used to replace seals during planned or unplanned rebuilds, the LX Profile lowers shaft cost due to liberal surface finish specifications.

DESIGN
The LX Profile shares design features with the LW Profile, such as a wrap-around geometry and enhanced rotor labyrinths for a more robust and aggressive labyrinth profile over standard designs. Enhanced internal oil splash grooves manage heavy oil splash in the bearing cavity. The LX profile, however, is designed for vertical up shaft mounts specifically and does not have an external drain port. An 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. The rotor uses an external O-ring to maintain a static press fit on the shaft. Since the rotor spins with the shaft, it will not wear, groove, or damage the shaft. This eliminates costs associated with having to recondition the sealing surface of the shaft.

The rotor and stator are assembled at Parker’s factory where they are permanently unitized, allowing for a one-piece installation. 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.

APPLICATIONS
The LX profile is an enhanced design for applications with aggressive oil splash and heavy contamination. The flange seats against the housing and acts as an installation guide by ensuring the seal alignment is correct. It is ideal for sealing and protecting the bearing housings of vertical up electric motors, pumps, mixers, gear boxes, blowers and custom equipment against heavy water spray and dry contaminants. The LW design is excellent for retaining grease and oil splash, however the oil level must be below the inboard oil drainback (non-flooded).

Total Eccentricity: 0.020” (0.51 mm)
Shaft speed: Up to 3,000 fpm (15 m/s). Contact Parker for speeds >3,000 fpm (15 m/s).
Maximum internal pressure: 0 psi (0 bar)
Axial Movement: 0.020” (0.51 mm) Special designs up to 0.070” (1.78 mm)
Shaft/Bore: Tolerances: ± 0.002” (± 0.05 mm)

The LX Profile shaft mounting positions and respective compatible lubrication types are:
• Horizontal Mounting: Compatible for grease, oil and dry
• Vertical Up Mounting: Compatible for grease, oil and dry
• Vertical Down: Compatible for grease, and dry. Not compatible for oil.

MATERIALS
Stator & Rotor: ProTech uses advanced, proprietary PTFE compounds making it well suited for harsh environments, such as citric acids and strong caustics. 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.

Characteristics of the various PTFE materials offered:
• Temperature range: -40 to 250 F (-40 to 121 C)
• Higher temperature applications can be handled with alternate materials.
• Low wear, low coefficient of friction. Superior for dynamic applications.
• FDA compliant
• Anti-microbial
• USDA 3A sanitary standards for food and dairy product contact

O-Rings: Come standard as FKM, but are also available in:
• NBR
• FDA silicone
• Fluorosilicone
• EPDM
• Aflas®

SIZE RANGE
Parker manufactures the LX Profile in standard shaft diameters ranging from 0.492” to 10” (12.5 mm to 254 mm). Because this is a precision machined seal, we can manufacture virtually any configuration.

HOW TO ORDER: To configure your part number, download the ProTech Part Numbering Guide from the Product Support tab. Contact Parker for requirements outside standards shown in the ProTech Bearing Isolators literature document in the Product Support tab. Click on “Where to Buy” to find a Distributor in your area, or contact Parker for assistance.

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