Minuteman™ self lube PTFE composite linear/rotary bearings are lined with
a Self Lubricating PTFE Composite which is bonded to an machined
aluminum shell. It is a combination of PTFE and nonabrasive, polyimide fillers.
This composite is the industry leader in both load and coefficient of
friction. Because Minuteman’s™ fillers are nonabrasive, it runs equally
well on both hardened RC60 and 300 series ( soft ) stainless
steel shafting.

This bearing excels in:

Minuteman™ Ceramic Coated linear/rotary bearings employ a hard ceramic
coating over a machined aluminum shell. This tough, inert coating is file
hard and FDA/USDA compliant. Minuteman’s™ ceramic coating will not flake,
chip or fracture. This linear bearing REQUIRES LUBRICATION* and has
been tested to 100 million linear feet of travel with .000040 wear! It was
declared an Important New Product Innovation ( INPI ) by engineers
and machinery designers upon its release to the marketplace in 1976.

This bearing excels in:

* A light oil or grease is sufficient. DO NOT USE SILICON BASED LUBRICANTS

* We have not seen an application speed where this bearing
- employed properly - has failed when lubricated. This includes rocket
sleds used in the testing of electronic components for space travel!