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'''Frelon''' is a [[polytetrafluoroethylene]] (PTFE) based material with other proprietary fillers to increase [[bearing (mechanical)|bearing]] characteristics, such as low [[wear]], low [[friction]], and high [[strength of materials|strength]]. It is [[chemically inert]] and self lubricating. It qualifies as a [[class III plain bearing]].<ref name="bilact">{{Citation|title=Frelon lined linear bushings |date=March 1997 |url=http://www.bilact.ru/rs/datasheets/pdf/232_6304.pdf |accessdate=2010-11-26 |archiveurl=https://www.webcitation.org/5uXW1wiij?url=http://www.bilact.ru/rs/datasheets/pdf/232_6304.pdf |archivedate=2010-11-26 |postscript=. |url-status=dead }}</ref> The load capacity of a frelon-lined bearing is typically four to eight times that of a comparable [[ball bearing]]; for instance, a {{convert|0.5|in|abbr=on}} Frelon-lined bearing can support the same load as a {{convert|1|in|abbr=on}} ball bearing.<ref name="sdpsi">{{Citation|title=Frelon lined linear bearings |url=http://www.sdp-si.com/d790/html2/D790C05015_1.html |accessdate=2010-11-26 |archiveurl=https://www.webcitation.org/5uXmK659n?url=http://www.sdp-si.com/d790/html2/D790C05015_1.html |archivedate=2010-11-27 |postscript=. |url-status=dead }}</ref>

==Characteristics==
Frelon creates a self-lubricating [[bearing surface]] by transferring some of the soft PTFE to the [[Drive shaft|shaft]]ing during the [[wikt:running in|running in]] process. It is almost universally chemically inert; the only materials that attack it are molten [[sodium]] and [[fluorine]] at elevated temperatures.<ref name="bilact"/>

It has a plain bearing pressure rating (P) of {{convert|1500|psi|MPa|abbr=on}}; dry velocity rating (V) of 140 [[surface feet per minute]] (sfm) (0.71 m/s); and a PV rating of 10,000 psi sfm (0.35 MPa m/s).<ref name="bilact"/>

Additional lubrication can reduce friction and wear by 50%.<ref name="sdpsi"/>

==References==
{{Reflist}}

[[Category:Bearings (mechanical)]]
[[Category:Fluoropolymers]]

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