Grease and other hydrocarbons have greater coefficients of expansion than
most compounds. Much greater than metals or water. The coefficient
increases markedly above 50°Celsius.
Richard Dickerson, Ph.D., DABT
Associate Professor, TIEHH and
Department of Pharmacology
Texas Tech Medical Campus
3601 4th Street
Lubbock Texas 79430
806 743 2425 xt 232
806 743 2744 fax
> ----------
> From: jckniese@francomm.com
> Reply To: jckniese@francomm.com
> Sent: Wednesday, February 16, 2000 6:17 AM
> To: wwpotter@tscnet.com
> Subject: Re: Secret to Brg Buddies & hub dunking formerly
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - -
> West Wight Potter Mailing List maintainer
> dfarrell@ridgecrest.ca.us
> List hosted by www.tscnet.com
> - - - - - - - - - - - - - - - - - - - - - - - - - - -
> Dennis W. Farrell wrote:
> >
> > - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > West Wight Potter Mailing List maintainer
> > dfarrell@ridgecrest.ca.us
> > List hosted by www.tscnet.com
> > - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > Bob: I really wonder whether thermal expansion of air in a hub can
> generate
> > enough force to pop a Bearing Buddy off. I don't think (but also don't
> > know) that grease has that much of an expansion coefficient. [Time for
> our
> > ME's in the crowd to join in here.] They do have an overpressure spring.
> > For internal pressure to pop the Buddy off, it seems to me that the
> axial
> > force to pop the Bearing Buddy would have to be less than the force
> required
> > to move the piston against the relief spring. If that's the case, one
> should
> > be able to remove a Bearing Buddy by grabbing the Zerk fitting with a
> pair
> > of pliers and pulling<G>
> >
> > What have you observed that makes you think it was air or other
> > overpressure?
> >
> > -- dwf
> >
> > -----Original Message-----
> > From: jckniese@francomm.com <jckniese@francomm.com>
> > To: wwpotter@tscnet.com <wwpotter@tscnet.com>
> > Date: Tuesday, February 15, 2000 16:26
> > Subject: Re: Secret to Brg Buddies & hub dunking formerly
> >
> > =====>snip<=====
> > >Hi Scott,
> > >To remove bearing buddies just take a hammer and tap up,down, and all
> > >around. You will see them start to loosen up and then they can be
> > >pulled off. A puller won't work. When repacking don't pack in too
> much
> > >grease or they will pop off when the grease gets warm on the highway.
> > >Bob
> > >P19#1148
> > >Dovie
> > >
> I lost both my bearing buddies just after repacking my wheel bearings
> and driving a distance of 30 miles at turnpike speeds. I didn't notice
> that I had lost them until I returned and picked up my boat. At first
> I thought that some one had stolen them. After that I read some
> articles in trailer boating magazines that they could pop off if packed
> too tight.
> Bob
> P19#1148
> Dovie
> Duanesburg,NY
>
This archive was generated by hypermail 2b29 : Tue Feb 29 2000 - 03:27:09 PST