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VB45-U Bearing Isolator

The VB45-U Bearing Isolator is one of the most robust Bearing Isolator designs ever developed. It provides permanent bearing protection by protecting against lubrication loss for both oil and grease lubricated equipment and is IP66 rated for high contamination ingress protection. This unique design also handles extreme amounts of axial movement while only having a 17.78mm (0.700 in.) overall length, allowing for premium protection in limited space.

The VB45-U ensures premium protection by utilizing multiple innovative design features. The patented XX Interface blocks contaminants from entering the bearing housing while the D-Groove and Coalescing Ring protect against oil or grease loss. The unique VB45 Chamber houses the VBX® Ring to inhibit the transfer of vapor contamination created by the heating/cooling of the bearing enclosure. The unitized construction accommodates 6.35 mm (0.250 in.) of axial movement.

Same day shipments are available.


Features and Benefits

  • XX Interface: unique stator/rotor interface provides permanent protection against contamination ingress
  • Coalescing Ring: blocks grease from traveling down the shaft into atmosphere
  • D Groove: captures oil on the shaft and returns it to the bearing housing
  • VB45 Chamber: unique 45° chamber that houses the VBX® Ring and allows for a smaller overall length compared to other designs
  • VBX Ring: blocks the transfer of vapor contamination created by heating/cooling of the bearing enclosure


Technical Data

  • Standard Material: Bearing Bronze
  • Axial Movement: 6.35 mm (0.250") or greater
  • Radial Movement: 0.25 mm (0.010")
  • Temperature Range: -26°C (-15°F) to 204°C (400°F)
  • Speed: 10,000 sfpm
  • Standard Overall Length: 17.78 mm (0.700")
  • Shaft Size: 15.88 mm (0.625") to 1220 mm (48")

Consult an Inpro/Seal representative for operating conditions outside of limits shown.