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SKF CARB Bearings

SKF CARB toroidal roller bearings are uniquely designed to accommodate misalignment and axial displacement in a single bearing, while carrying very high radial loads. They combine features of spherical and cylindrical roller bearings, making them ideal as non‑locating bearings in demanding industrial applications.

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C 2216/C4, SKF, CARB toroidal roller bearing SKF CARB Bearing with standard steel cage SKF Authorised distributor logo

Metric, Bearing, Steel cage, Cylindrical bore, C4 Clearance, 7316571463698

Brand SKF
Mfr Part No. C 2216/C4
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This item is currently out of stock.

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 Available from supplier. Price and despatch to be confirmed

What is an SKF CARB bearing?

SKF CARB toroidal roller bearing

Before the introduction of the SKF CARB Bearing, or toroidal roller bearing, almost every bearing arrangement was a compromise, due to ever present misalignment and axial displacement. Combining the self-aligning properties of the spherical roller bearing with the ability to accommodate axial displacement like a cylindrical or needle roller bearing, the SKF CARB toroidal roller bearing is now a proven and effective bearing solution for non-locating bearing positions.

CARB bearings can also have a compact cross section in conjunction with the high load carrying capacity normally associated with needle roller bearings.

The CARB bearing has the following benefits:

  • Reduced maintenance
  • High operation reliability
  • Long service life
  • High load carrying capacity
  • Lower operating costs
  • Compact design
  • Enhanced performance
  • High power density

Typical industrial fan reference stories

  • Every year a critical fan showed extremely high vibration levels due to bearing failures in the drive side of the blower. The CARB/spherical roller bearing self-aligning solution delivered real benefits, increasing MTBF from 1 to 5 years.
  • A malting plant experienced imbalance problems and repeated failures of the locating bearing in a fan with a vertical shaft. The non-locating position was upgraded to CARB with exceptional results.
  • A global producer of large electric motors used CARB on a multi splined shaft. Due to temperature gradients, significant sliding occurred between the non-locating spherical roller bearing and the housing. The introduction of CARB eliminated this issue.

SKF CARB Bearings FAQs

What is a CARB bearing and how is it different from a spherical roller bearing?

A CARB bearing is a toroidal roller bearing that can accommodate axial displacement and misalignment in one bearing. A spherical roller bearing can accommodate misalignment, but not significant axial displacement within the bearing – axial movement must occur between the bearing and housing. CARB bearings are therefore ideal as non‑locating bearings in combination with a locating bearing.

What information do I need to specify a CARB bearing correctly?

Helpful information includes:

  • Shaft diameter and housing dimensions
  • Radial load (and any axial load to be carried by the locating bearing)
  • Expected shaft expansion/axial movement
  • Required speed and operating temperature range
  • Existing bearing types and arrangement (if upgrading)

With this data, we can recommend the correct SKF CARB bearing and suitable locating bearing partner.

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