All of the Simplicity linear bearings come standard with the FrelonGOLD® self-lubricating liner and do NOT require external lubrication.
Precision vs Compensated
Within the family of Simplicity linear bearings, precision and compensated are terms that refer to the two classes of available running clearances. It is important to understand the difference in these two classes for the design and installation process to ensure that bearing systems will perform properly.
If you are building a linear slide system or replacing existing bearings, a simple way to check for the difference between a precision and a compensated bearing is to place each on a shaft. In this side-by-side comparison, you will distinctly feel more play caused by the greater clearance in the compensated bearing. Note that many parallel shaft applications will run with an “FL” (Precision) bearing on one rail and “FLC” (Compensated) bearing on the opposite rail to accommodate for slight misalignments. Below is a quick reference comparison for Simplicity bearings:
- Use the prefix “FL” in the part number.
- Has the tightest running clearance (approximately .001” or .025mm total).
- Recommended for applications that require tighter tolerances and stiffened assemblies.
- Not recommended for parallel shaft applications where misalignment can lead to binding issues.
- Use the prefix “FLC” in the part number.
- All dimensions the same as precision bearings, except for more clearance in the I.D. between the shaft and bearing (approximately .003” or .07 mm total).
- Ideally suited for parallel shaft applications.
A major advantage of the self-lubricating Simplicity linear bearings is that they can be used over a very wide temperature range (−400°F / 400°F) (−240°C/+204°C). The fact that they are “self-lubricating” allows for the elimination of external grease or oil that is often the limiting factor on a bearing’s performance.
The thin bearing liner of Frelon® materials allows heat to dissipate through the bearing shell in high temperature applications. The bearing material maintains its performance characteristics while keeping thermal expansion to a minimum.
The standard bearing I.D. options are designed for use in most industrial applications. For temperatures below 0°F, the standard bearing I.D. is recommended (FL series bearings). For extreme high temperatures, the compensated I.D. bearing (FLC series) is recommended due to the increased running clearance.
CAUTION: It is always best to inspect actual size at extreme temperatures to ensure the proper running clearance.