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How to Properly Lubricate a Plain Bearing

August 24, 2015 - Rockford, IL  -  Posted by PBC News

Simplicity® linear plain bearings exhibit real benefits, when compared to over other styles of linear bearings; such as the self-lubricating quality of the bearing’s Frelon® liner, as well as the wiping action on the shaft which enables smooth linear motion. These capabilities allow a linear motion system to not only avoid catastrophic failure, but to also lengthen the life of the system.

The Frelon break-in and transfer process of a self-lubricating linear bearing ensures operation at maximum efficiency. In order to properly integrate the bearing into a linear motion system, the linear shafting needs to be cleaned with a 3-in-1® type of oil to ensure a clean transfer of material. Then the bearing must run multiple cycles over the shafting for the frelon to deposit a microscopic film onto the shaft, filling the valleys in the surface finish and creating a frelon-on-frelon running condition that is truly self-lubricating.

In certain situations, a plain bearing may need additional lubrication. For PBC Linear’s Simplicity bearings, the following lubricants are recommended:

  • Waylube oils
  • Lightweight, petroleum-based oils
  • 3-in-1 type oils
  • Lightweight, petroleum-based greases

Some lubricants that should be avoided when using Simplicity bearings include:

  • WD-40®
  • PTFE sprays
  • Oils, greases or sprays that contain fluorocarbons or silicone
  • Motor oils/oils with additives

Simplicity bearings can be configured with an optional lubrication system machined-in for extra lubrication. A felt wick is machined into the ID of the bearing that is intended only for use with oils—when using grease, remove the felt wick to create a reservoir for the grease lubrication. Housed units are configured with a zerk-fitting in the wall allowing for the introduction of lubricant to the felt-wick on the inside of the bearing.

How to Properly Lubricate a Plain Bearing | Video

To learn more about properly lubricating linear plain bearings,
watch the video, Proper Lubrication of Plain Bearings.

PBC Linear®, a Pacific Bearing Company, is the world leading manufacturer of the Simplicity self-lubricating bearings based in Roscoe, Illinois.  With over 30 years’ experience in linear motion and bearing technologies, PBC has a wide range of solutions designed to solve difficult motion applications.

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