LBBS-7000 - Labyrinth Seal Bearing Protector Straight OD and Grounding Ring Stainless-Phos.Bronze

The LBBS-7000 is a high performance Labyrinth Seal designed for use on Electric Motors. It incorporates a parallel outside diameter (OD) and an integral Grounding Ring, that helps to prevent premature failure of the bearings as a result of electrical fluting. Electrical fluting is a form of electrical erosion where electrical discharge strips metal surfaces and erodes the material. Electrical fluting presents as a series of ridges or “flutes” that appear along bearing raceways, especially in motors equipped with variable frequency drives (VFDs)

This bearing seal will fit small x-sectional spaces, typically where lip seals or oil seals have previously been employed, and is certified to IP55; a standard for the protection of rotating equipment bearing chambers.

Our LBBS-7000 labyrinth seal design is offered as a complete cartridge solution that installed into the rotating equipment in a similar way to a lip or oil seal.

Design Features include;

  • Parallel Outside Diameter - ideal for use with equipment with tight spaces, such as electric motors.
  • Integral Grounding Ring - helps to prevent electrical fluting in the motor bearings.
  • IP55 certified - provides protection against ingress of dust and high temperature, high pressure water – making the product ideal for use in conditions where equipment must be carefully sanitized.
  • Cartridge, one piece solution for ease of installation
  • Non-contacting design - No shaft wear and high shaft maintenance expense. Maintenance free construction.
  • Bi-metallic material construction for optimum operational performance
  • Outboard water/dust repellent orifice
  • Integral PTFE barrier seal
  • Twin rotor o-ring drive which stablizes the rotor in operation. This permits 'value-adding' close radial clearance construction between rotor and stator, which improves sealing performance.
  • Compact design - will fit in practically all rotating equipment rotor/stator openings
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Supply/Design Characteristics
Seal Shaft Sizes
ALL
System Vessel Size
Inboard Seal Face Combination
Outboard Seal Face Combination
Gasket
Secondary Sealing
Bellows
Inboard Wetted Parts
316 S/S, Phoz.Bronze
Elastomers
Viton, Alfas, ERP, FFKM, PTFE
Shaft Speeds
up to 4,000rpm 30m/s (6,000 ft/min) **
Pressures
n/a
Temperature
up to 150 deg C (300 deg F) **
Instrumention
Pipework & Fittings
Temperatures
up to 150 deg C (300 deg F) **

This innovative LBBS-7000 labyrinth seal is designed around best practice technology. Please see our Blog section for technical white papers on the design principles incorporated.

Safe Operating Limits:

This seal incorporates best practice features and innovation as detailed in our technical blogs and white papers.

** Apply "industry standard" Pressure, Speed and Temperature de-rating factors, by shaft size and application. The safe seal performance characteristics are typical characteristics for each variable in isolation. The individual upper limit values of each variable should NOT be used in multiple combinations of Speed, Pressure and Temperature. Contact our Technical Sales Department for further details.

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