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Hevi-Rail Combined Bearing Adjustments
How to Adjust a Heavy Duty Roller Bearing

How to Adjust a Heavy Duty Roller Bearing

Hevi-Rail® heavy duty roller bearings provide extremely high load capacities for material handling and other applications.

What's the difference between axial and radial bearings?

Axial bearings, also known as thrust bearings, are designed to support loads that act in parallel to the shaft. Radial bearings support loads that act perpendicular to the shaft. Hevi-Rail bearings from PBC Linear are designed to support both high radial and axial load capacities to ensure a long and productive life under continuous use.

What load capacities can be expected from axial bearings?

Hevi-Rail bearings from PBC Linear can support statis axial loads up to 18.5 kN.

Discover your ideal linear motion solution:

Adjusting a Hevi-Rail Combined Axial Bearing

In many applications, the HVBEA series bearings provide a good way to deal with axial clearances in the system. Watch the video above or read the steps below regarding how to adjust the eccentric portion of the bearing to reduce any axial play.

  1. Remove all of the Allen head screws from the face plate.
  2. Apply even pressure, pulling up on the outside raceway while pushing down on the eccentric bearing in order to separate the two bearings.
  3. Measure from the flat casing surface to the highest point of the eccentric bearing.
  4. Rotate the eccentric bearing around the off-set axis to change the height of the bearing from the flat casing surface.
  5. Re-measure and adjust until the distance needed is reached.
  6. Re-assemble the bearing and tighten all of the screws back into the face plate.

Cantilevered Load Calculation for Hevi-Rail Axial Bearings

Hevi-Rail heavy duty linear guide bearings are designed to handle extreme loads for up to 60-ton systems. Calculating the maximum cantilever force capabilities of a Hevi-Rail design is a simple process when following this formula:

Hevi-Rail Axial Bearing and Flange Plate Assemblies

For the purpose of easy mounting, PBC Linear offers Hevi-Rail combined bearings pre-welded to flange plates. Customers can eliminate the gargantuan task of disassembling the bearing, aligning the base and hole, welding the base into place, and reassembling the bearing. We guarantee quality with a complete assembly that’s been pre-aligned and pre-welded, and shipped direct from PBC Linear. Once received, customers need only to bolt the flange and bearing into place, saving time and money. In addition, fixed or eccentric axial rollers can be adjusted to easily eliminate side-to-side play in a system.

Heavy Duty Linear Guide Load Calculation
Hevi-Rail Linear Guide Diagram
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Source: PBC Linear - “Hevi-Rail Combined Bearing Adjustments”
https://pbclinear.com/blogs/blog/hevi-rail-combined-bearing-adjustments
Last updated: November 2025