Plain Bearings Simplicity ®
Transfer Process of Liner to Shaft The interaction of the Frelon ® material and the shafting creates a natural, microscopic transfer of the Frelon to the running surface. A thin film is deposited on the shaft, and the valleys in the surface finish are filled in with Frelon material during the initial break-in period. This transfer creates the self-lubricating condition of Frelon riding on Frelon. This break-in period varies depending on several criteria: 1. Preparation of the shafting prior to installation – it is best to clean the shafting with a 3-in-1 type oil before installing the bearings. This ensures that the surface will receive a full transfer of material. 2. Speed, load, and length of stroke specific to the application – typically the initial transfer process will take approximately 50-100 strokes of continuous operation. The running clearance on the bearing will increase an average of 0.0002" to 0.0005", depending on the length of the stroke and surface requiring the transfer. 3. How often the shafting is cleaned – if the shafting is cleaned regularly, increased wear will be seen in the bearings. This is due to the transfer process being performed over and over again.
FrelonTransfer Process
Before
After
Shaft
Shaft
At break-in, Frelon deposits a microscopic film on the shaft and fills the valleys in the surface finish creating a Frelon-on-Frelon running condition that is true self-lubrication.
Do not repeatedly clean the shafting with alcohol. This will remove the previously transferred material entirely and increase the wear to the bearing liner. Do not use smooth chrome shafting with Frelon bearings. The surface finish is less than 8 Ra and does not maintain proper transfer of Frelon material. This will result in accelerated wear.
RECOMMENDED LUBRICATION • Waylube Oil • Light Weight Oils • Petroleum Based Grease • 3-in-1 oils
Lubrication • Reduce friction up to 50% • Minimize wear of liner • Reduce heat buildup allowing greater speeds Actual speeds achieved are dependent on type of lubricant and frequency of application • Aid in cleaning the shafting for a proper transfer process A minimum of initial lubrication of Simplicity bearings is strongly recommended Chemical Resistance Simplicity bearings stand up to harsh environments and provide excellent performance in a submerged condition. FrelonGOLD ® – the fillers in the material can be attacked by deionized water and other harsh chemicals Frelon J – almost universal chemical inertness: Only molten sodium and flourine at elevated temperatures and pressures show any signs of attack Frelon W – A white colored food-grade liner that is FDA compliant Anodized Aluminum Shell (Standard) – good chemical resistance in most industrial applications 316 Stainless Steel Shell (Optional) – excellent chemical and corrosion resistance in harsh environments
NOT RECOMMENDED • WD-40 • PTFE Sprays • Fluorocarbons • Silicon Oils, Grease or Spray WD40® is a registered trademark of the WD40 company
More Information about Simplicity's Chemical Resistance
pbclinear.com • Engineering Your Linear Motion Solutions 13
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