Bearing Gard – Isolators

Bearing Gard protection technology delivers reliable isolation from contamination to keep bearings running cleaner longer.

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Bearing Gard bearing isolators directly assist equipment reliability by creating a strong barrier against external contamination.

  • Static protection is assured by an internal O-ring between the rotor and stator.
  • Dynamic protection is provided by a tortuous labyrinth that effectively repels severe environmental conditions.
  • Standard design accommodates axial shaft movement of 0.63 mm (0.025 inch) TIR
  • Static sealing quickly transitions to non-contacting operation for consistent performance and will not wear on the shaft or equipment.
  • Oil retention features work to keep oil inside the bearings and off the ground.
  • Non-contacting design – does not wear out or generate any heat.
  • Can be used for ATEX upgrades of older equipment.

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General guidelines for made to order designs with same day shipping

  • Shaft diameter: 23 – 203 mm (0.875 – 8.000 inch)
  • Housing bore: 20 – 50 mm (0.750 – 2.000 inch) over shaft diameter for shaft sizes up to 150 mm (6.000 inch)
  • Housing bore: 25 – 50 mm (1.000 – 2.000 inch) over shaft diameter for shaft sizes over 150 mm (6.000 inch)
  • Axial insertion/extension: see cross section view
  • Maximum axial movement: 0.63 mm (0.025 inch) TIR
  • Maximum radial runout: 0.13 mm (0.005 inch) TIR
  • Speed: up to 30 m/s (100 ft/s)
  • Rotor and Stator: Bronze
  • O-rings: Viton
  • Bearing lubrication: oil splash, grease, oil mist, dry lubrication, non-flooded conditions

Bearing Gard isolators fit a wide range of rotating equipment.

Typical applications include pumps, motors, gearboxes, and general lip seal replacements.

Equipment-specific Bearing Gard designs are available or Flowserve will rapidly design a custom solution

The Bearing Gard meets or exceeds the following industry standards and certifications: • API 610 • IEEE-841 • IP-66 • ATEX


Contact our Mechanical Seal Team:

Chris Sheeran (External) – mob: 087 755 9936

Internal Team

Dave O’Connell – tel: 021 461 7233

Fiona Foley (Service Support) – tel: 021 461 7240                                    Tel:   021 461 7200