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- From: pierson@empror.enet.dec.com (dave pierson)
- Subject: Re: Oil Bearings (was Re: Grand Canyon Railway)
- Message-ID: <1992Dec22.004932.21265@ryn.mro4.dec.com>
- Sender: news@ryn.mro4.dec.com (USENET News System)
- Organization: Digital Equipment Corporation
- Date: 21 DEC 92 19:47:08
- Lines: 29
-
- In article <1992Dec21.223512.12593@mel.dit.csiro.au>, ajw@squid.mel.dit.CSIRO.AU (Andrew Waugh) writes...
-
- >'Friction bearing' is a tautology. All bearings have friction. What
-
- Urrrrmmmm Well, i know what you mean, but roller bearings (ball, etc)
- don't have (noticeable amounts of _sliding_ friction.
-
- >they mean is that the cars are fitted with traditional bearings in
- >which the turned steel journal (the axle) rotates in a white metal
- >bearing. Oil lubrication is supplied by a pad rubbing the underside
- >of the journal. In modern equipment this type of bearing is replaced
- >by roller bearings.
- In the USA, use of brass as the material for the bearing was almost
- universal, to the point where "the brasses" was synonymous with the
- (replaceable) part of the bearing system.
-
- >I would not be surprised if railroads limit (or even prohibit) the
- >use of equipment equipped with oil bearings.
-
- Without checking, i suspect that FRA or DoT have done so, at least
- for interchange.
-
- thanks
- dave pierson |the facts, as accurately as i can manage,
- Digital Equipment Corporation |the opinions, my own.
- 40 Old Bolton Rd |I am the NRA.
- Stow, Mass, USA
- 01775 pierson@msd27.enet.dec.com
- "He has read everything, and, to his credit, written nothing." A J Raffles
-