Re: [Healeys] spun bearings

[warthodson@aol.com]

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One possible explanation for why the factory design included the clamping o=
f the bearing might be that they could not rely entirely on the bearing man=
ufacturer & the hub manufacturer to hold the tolerances required for a prop=
er press fit of the bearing. If the bearing O.D. was a little under spec & =
the diameter of the recess in the hub was a little over spec. the bearing w=
ould be free to move about. Thus the clamping & the specification on the am=
ount of clamping.
Gary Hodson=20
=20
=20
From: Steve Gerow steveg@abrazosdata.com

=20
 =20
Kees wrote:
 =20
>>>=20
 =20

Ball/needle/roller bearings can only spin when the there is debris=20
inside the bearing from e.g. a broken cage, balls/needles/rollers, diff=20
that block the bearing causing the outer cage to turn. This happens=20
mainly because people drive there cars until the bearing starts to break=20
up, well into or beyond the rumbling stage.
<<<
 =20
=20
 =20
I don=E2=80=99t think it=E2=80=99s that absolute. In my case it was a year-=
old bearing that spun with no apparent damage to the bearing other than hav=
ing the outside buffed to a high sheen. The operation remains perfectly smo=
oth.
 =20
=20
 =20
Personally, I=E2=80=99m persuaded that the act of clamping the inside and o=
utside, per the manual, is preferable to shrinking or driving or gluing the=
 bearing in, leaving the spacer loose and hoping for the best.
 =20
=20

=20

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<font color=3D'black' size=3D'2' face=3D'arial'>
<div><font face=3D"Arial, Helvetica, sans-serif" style=3D"background-color:=
 transparent;">One possible explanation for why the factory design included=
 the clamping of the bearing might be that&nbsp;they could not&nbsp;rely en=
tirely on the bearing manufacturer &amp; the&nbsp;hub manufacturer to hold =
the&nbsp;tolerances required&nbsp;for a proper press fit of the bearing.&nb=
sp;If the bearing&nbsp;O.D.&nbsp;was a little under spec &amp; the diameter=
 of the recess&nbsp;in the hub was a little over spec. the bearing would be=
 free to move about. Thus the clamping &amp; the&nbsp;specification on the =
amount of clamping.</font></div>

<div>Gary Hodson&nbsp;</div>

<div>&nbsp;</div>

<div>&nbsp;</div>

<div style=3D"color: black; font-family: arial,helvetica; font-size: 10pt;"=
>From: Steve Gerow <a href=3D"mailto:steveg@abrazosdata.com";>steveg@abrazos=
data.com</a><br>


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<div class=3D"aolReplacedBody" lang=3D"EN-US">
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<div class=3D"WordSection1">
 =20
<div class=3D"MsoNormal">Kees wrote:</div>

 =20
<div class=3D"MsoNormal">&gt;&gt;&gt;&nbsp;</div>

 =20
<div class=3D"MsoNormal"><br>
Ball/needle/roller bearings can only spin when the there is debris <br>
inside the bearing from e.g. a broken cage, balls/needles/rollers, diff <br=
>
that block the bearing causing the outer cage to turn. This happens <br>
mainly because people drive there cars until the bearing starts to break <b=
r>
up, well into or beyond the rumbling stage.<br>
&lt;&lt;&lt;</div>

 =20
<div class=3D"MsoNormal">&nbsp;</div>

 =20
<div class=3D"MsoNormal">I don=E2=80=99t think it=E2=80=99s that absolute. =
In my case it was a year-old bearing that spun with no apparent damage to t=
he bearing other than having the outside buffed to a high sheen. The operat=
ion remains perfectly smooth.</div>

 =20
<div class=3D"MsoNormal">&nbsp;</div>

 =20
<div class=3D"MsoNormal">Personally, I=E2=80=99m persuaded that the act of =
clamping the inside and outside, per the manual, is preferable to shrinking=
 or driving or gluing the bearing in, leaving the spacer loose and hoping f=
or the best.</div>

 =20
<div class=3D"MsoNormal">&nbsp;<tt>
</tt></div>
</div>
</div>
</div>

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