[Steam-engine] Oil Grooves

[Orrin Iseminger]

In a plain bearing, the shaft rotation carries the lubricant along and the
lube is "wedged" into the space between the bearing and the shaft.  It is
the oil wedge that separates the bearing and the shaft.

This wedge is rather thin.  Ask yourself this:  If the bottom half of the
bearing has a groove in it, what is the oil going to wedge against?  

This Web page tells all about the oil wedge principle. 

http://www.stiweb.com/appnotes/jb.htm

Regards, 

Orrin

Orrin Iseminger
Colton, Washington, USA
http://users.moscow.com/oiseming/lc_ant_p/index.htm
So many projects.  So little time.   

-----Original Message-----
From: steam-engine-bounces at lists.stationary-engine.com
[mailto:steam-engine-bounces at lists.stationary-engine.com] On Behalf Of Andy
glines
Sent: Saturday, September 02, 2006 5:50 AM
To: Steam-engine mailing list
Subject: Re: [Steam-engine] Oil Grooves

Doesn't the bottom half bear most of the load?  Should
the bottom have a groove?

--- Ken Hough  <k4sb at niia.net> wrote:

> Did you "tin" the bearing halves with acid core
> solder first? The babbit 
> will grip better. Since the top half bears the
> weight a simple groove 
> parallel to the shaft and 80% its width will work.
> Make sure this grove is 
> centered.
> Ken
> 
> 

Andy Glines
Evansville, IN

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