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Thanks guys, great info!Yes I normally use the Timken, but it wouldn't sur=
prise me if they changed spec on the radius at some point; I've had the sam=
e problem with Sprite/Midget front hub tapered roller bearings.I'm going to=
try to get some specs from Moser & I'll order a Green brand bearing & comp=
are to the Timken, & I'll post my findings.This condition is somewhat conce=
rning obviously because if the inner race & press collar aren't hard up aga=
inst the hub shoulder, the assembly is weakened as a structure, any hub fle=
x load goes directly into the axle bearing inside corner radius, & we all k=
now what happens after that....Thanks again!!!Glen Efinger
On Monday, January 19, 2026 at 11:32:47 PM EST, DAVE HOGYE via Fot <fot=
@autox.team.net> wrote: =20
Thanks Joe. I thought that I had crossed this bridge before.=C2=A0=C2=
=A0 I appreciate revisiting these posts. =C2=A0 Dave H.=C2=A0 =20
On 01/19/2026 7:46 PM PST Joe Boruch <jaboruch@yahoo.com> wrote: =C2=A0=
=C2=A0 =C2=A0 There is a thread from 2020 about the bearings. =C2=
=A0Here is what I had posted back then; "The Moser package that I have, w=
hich came with 2 bearings and 2 press on retainers is part number MSR-9507F=
.=C2=A0 The bearing is an RW507E, 1.377 ID and 2.834 OD.=C2=A0 JoeB" =C2=
=A0 Here are some other posts from that thread: =C2=A0 The Timken=
number that I tried using is RW507ER.=C2=A0 Perhaps the Suffix R is the ra=
dius designation.=C2=A0 In any event, it doesn't really cross with the Gree=
n bearing used for the Moser axle and I could not get a different Timken be=
aring.=C2=A0 The inner races have a different radius on the i.d.=C2=A0 I al=
way use Timken, but not this time.=C2=A0 Southwick will also send you Green=
bearings.=C2=A0 Number RW507E.=C2=A0=20
Dave H.=C2=A0=20
=20
Sent from my iPad =20
> On Dec 29, 2020, at 5:10 PM, Phil Gott <vfracing@aol.com> wrote:=20
>=C2=A0=20
> Thanks, guys!=20
> The seal that failed is not the O-ring. It is the seal in the bearing its=
elf. Gear oil from the differential is slowly working its way into the bear=
ing and diluting the grease, which is getting thrown out onto the brakes.=
=20
> Much appreciate the responses. I had not heard of =E2=80=9CGreen=E2=80=9D=
bearings as a brand before. Good to know that the chamfer radii are differ=
ent from Timken.=20
> In googling the part numbers it looks like Moser actually sells the beari=
ng and retainer as a set available from jEGS, Summit, etc.=20
> Thanks very much, everyone! And for such fast responses. What a great gro=
up!=20
> Phil=20
>=C2=A0=20
> Sent from my iPhone=20
>=C2=A0=20
>> On Dec 29, 2020, at 7:54 PM, Dave <dlhogye@comcast.net> wrote:=20
>>=C2=A0=20
>> Check the radius of the Timken bearing closely and make sure it will fit=
, or is larger than the radius on the axle flange before you install it.=C2=
=A0 Moser axles don't come with Timken bearings.=C2=A0 They come with Green=
bearings.=C2=A0 The first time I used Timken, I found that the radius of t=
he bearing interferes with the radius of the axle and keeps the bearing fro=
m going on as it should.=C2=A0 There was about .015" gap.=C2=A0=C2=A0=20
>> The numbers on the Green box are 9507F RW507E.=C2=A0 I asked the auto pa=
rts guy to get me the Timken cross and when installing it, noticed I could =
press it on all the way, leaving a gap to the shoulder.=C2=A0=20
>> Dave H. =C2=A0 On Monday, January 19, 2026 at 10:28:22 PM E=
ST, DAVE HOGYE via Fot <fot@autox.team.net> wrote: =C2=A0 =C2=A0 G=
len, I should have kept the FoT in the thread.=C2=A0 Important stuff. I=
noticed this the first time I changed bearings.=C2=A0 If I remember correc=
tly, Timken, which I prefer, had a smaller radius and it didn't seat all th=
e way.=C2=A0 It was seating down in the radius of the bearing.=C2=A0 Of cou=
rse I didn't think to check that radius before installing it.=C2=A0 Green a=
nd Timken obviously have a different radius.=C2=A0 I believe Southwick and =
Moser use the Green bearings.=C2=A0 There may be different part numbers fro=
m these companies for different dimensions for the radius.=C2=A0 I think th=
e basic number is 9507.=C2=A0 =C2=A0So, there might be a Timken with the ne=
eded radius.=C2=A0 The Green number is 9507F or RW507E.=C2=A0=C2=A0 =C2=
=A0 Dave H.=C2=A0 =20
=20
=C2=A0 =20
=20
_______________________________________________=20
fot@autox.team.net=20
=20
http://www.fot-racing.com=20
=20
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot=20
o.com=20
=20
=20
=20
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
m
=20
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<html><head></head><body><div class=3D"ydp621a5f44yahoo-style-wrap" style=
=3D"font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">Thanks guys, great info!</di=
v><div dir=3D"ltr" data-setdir=3D"false">Yes I normally use the Timken, but=
it wouldn't surprise me if they changed spec on the radius at some point; =
I've had the same problem with Sprite/Midget front hub tapered roller beari=
ngs.</div><div dir=3D"ltr" data-setdir=3D"false">I'm going to try to get so=
me specs from Moser & I'll order a Green brand bearing & compare to=
the Timken, & I'll post my findings.</div><div dir=3D"ltr" data-setdir=
=3D"false">This condition is somewhat concerning obviously because if the i=
nner race & press collar aren't hard up against the hub shoulder, the a=
ssembly is weakened as a structure, any hub flex load goes directly into th=
e axle bearing inside corner radius, & we all know what happens after t=
hat....</div><div dir=3D"ltr" data-setdir=3D"false">Thanks again!!!</div><d=
iv dir=3D"ltr" data-setdir=3D"false">Glen Efinger</div><div><br></div>
=20
</div><div id=3D"ydpbbde71deyahoo_quoted_9692857456" class=3D"ydpbb=
de71deyahoo_quoted"><div class=3D"ydpbbde71deyahoo-style-wrap" style=3D"fon=
t-family:Arial, Helvetica, sans-serif;font-size:16px;">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div class=3D"ydpbbde71dequoted-text-header">
On Monday, January 19, 2026 at 11:32:47 PM EST, DAV=
E HOGYE via Fot <fot@autox.team.net> wrote:
</div>
</div><div style=3D"font-family:'Helvetica Neue', Helvetica=
, Arial, sans-serif;font-size:13px;color:#26282a;border-left: 1px solid #cc=
c;padding-left: 8px;margin: 0px 0px 0px 8px" class=3D"ydpbbde71deinline_rep=
ly_quote_container" data-split-quote-node=3D"true">
<div><br></div><div><br></div>
<div><div id=3D"ydpbbde71deyiv8911453369"><div>
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:#333333;">
<span style=3D"font-family:helvetica;font-size:12pt;">Thanks Joe.</span>
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:#333333;" class=3D"ydpbbde71deyiv8911453369default-style">
<span style=3D"font-family:helvetica;font-size:12pt;">I thought that I h=
ad crossed this bridge before. </span>
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:#333333;" class=3D"ydpbbde71deyiv8911453369default-style">
<span style=3D"font-family:helvetica;font-size:12pt;">I appreciate revis=
iting these posts.</span>
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:#333333;" class=3D"ydpbbde71deyiv8911453369default-style">
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:#333333;" class=3D"ydpbbde71deyiv8911453369default-style">
<span style=3D"font-family:helvetica;font-size:12pt;">Dave H. </spa=
n>
</div>=20
<blockquote type=3D"cite">=20
<div id=3D"ydpbbde71deyiv8911453369yqtfd26318" class=3D"ydpbbde71deyiv89=
11453369yqt1155380869"><div>
On 01/19/2026 7:46 PM PST Joe Boruch <jaboruch@yahoo.com> wrote:
</div>=20
<div>
</div>=20
<div>
</div>=20
<div style=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;f=
ont-size:13px;" class=3D"ydpbbde71deyiv8911453369ydp6d489986yahoo-style-wra=
p">=20
<div>
</div>=20
<div dir=3D"ltr">
There is a thread from 2020 about the bearings. Here is what I h=
ad posted back then;
</div>=20
<div dir=3D"ltr">
"The Moser package that I have, which came with 2 bearings and 2 press=
on retainers is part number MSR-9507F. The bearing is an RW507E, 1.3=
77 ID and 2.834 OD. JoeB"
</div>=20
<div dir=3D"ltr">
</div>=20
<div dir=3D"ltr">
Here are some other posts from that thread:
</div>=20
<div dir=3D"ltr">
</div>=20
<div dir=3D"ltr">=20
<div>=20
<div style=3D"outline-color:currentcolor !important;" class=3D"ydpbbd=
e71deyiv8911453369ydp28affc3bjb_0 ydpbbde71deyiv8911453369ydp28affc3bX_6MGW=
ydpbbde71deyiv8911453369ydp28affc3bN_6Fd5">=20
<div style=3D"outline-color:currentcolor !important;">=20
<div dir=3D"ltr" style=3D"outline-color:currentcolor !important;">
The Timken number that I tried using is RW507ER. Perhaps the=
Suffix R is the radius designation. In any event, it doesn't really =
cross with the Green bearing used for the Moser axle and I could not get a =
different Timken bearing. The inner races have a different radius on =
the i.d. I alway use Timken, but not this time. Southwick will =
also send you Green bearings. Number RW507E.
<br clear=3D"none" style=3D"outline-color:currentcolor !important;=
">Dave H.
<br clear=3D"none" style=3D"outline-color:currentcolor !important;=
">
<br clear=3D"none" style=3D"outline-color:currentcolor !important;=
">Sent from my iPad
</div>=20
</div>=20
</div>=20
<div style=3D"outline-color:currentcolor !important;" class=3D"ydpbbd=
e71deyiv8911453369ydp28affc3bjb_0 ydpbbde71deyiv8911453369ydp28affc3bX_6MGW=
ydpbbde71deyiv8911453369ydp28affc3bN_6Fd5">=20
<div style=3D"outline-color:currentcolor !important;">=20
<div style=3D"outline-color:currentcolor !important;">=20
<div style=3D"border-left-width:1px;border-left-style:solid;border=
-left-color:#cccccc;margin:0px;padding:8px;outline-color:currentcolor !impo=
rtant;" class=3D"ydpbbde71deyiv8911453369ydp28affc3bqtd-body">=20
<div id=3D"ydpbbde71deyiv8911453369ydp28affc3byqtfd14290" style=
=3D"outline-color:currentcolor !important;" class=3D"ydpbbde71deyiv89114533=
69ydp28affc3byqt3884138464">
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> On Dec 29, 2020, at 5:10 PM, Phil Gott <<a shape=3D"rect" style=
=3D"text-decoration-style:solid;text-decoration-color:currentcolor;outline-=
color:currentcolor !important;" href=3D"mailto:vfracing@aol.com"; rel=3D"nof=
ollow" target=3D"_blank">vfracing@aol.com</a>> wrote:
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> Thanks, guys!
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> The seal that failed is not the O-ring. It is the seal in the bear=
ing itself. Gear oil from the differential is slowly working its way into t=
he bearing and diluting the grease, which is getting thrown out onto the br=
akes.
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> Much appreciate the responses. I had not heard of =E2=80=9CGreen=
=E2=80=9D bearings as a brand before. Good to know that the chamfer radii a=
re different from Timken.
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> In googling the part numbers it looks like Moser actually sells th=
e bearing and retainer as a set available from jEGS, Summit, etc.
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> Thanks very much, everyone! And for such fast responses. What a gr=
eat group!
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> Phil
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">> Sent from my iPhone
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>> On Dec 29, 2020, at 7:54 PM, Dave <<a shape=3D"rect" style=
=3D"text-decoration-style:solid;text-decoration-color:currentcolor;outline-=
color:currentcolor !important;" href=3D"mailto:dlhogye@comcast.net"; rel=3D"=
nofollow" target=3D"_blank">dlhogye@comcast.net</a>> wrote:
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>>
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>> Check the radius of the Timken bearing closely and make sure i=
t will fit, or is larger than the radius on the axle flange before you inst=
all it. Moser axles don't come with Timken bearings. They come =
with Green bearings. The first time I used Timken, I found that the r=
adius of the bearing interferes with the radius of the axle and keeps the b=
earing from going on as it should. There was about .015" gap. &n=
bsp;
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>> The numbers on the Green box are 9507F RW507E. I asked t=
he auto parts guy to get me the Timken cross and when installing it, notice=
d I could press it on all the way, leaving a gap to the shoulder.
<br clear=3D"none" style=3D"outline-color:currentcolor !importan=
t;">>> Dave H.
</div>=20
</div>=20
</div>=20
</div>=20
</div>=20
</div>=20
</div>=20
<div>
</div>=20
</div>=20
<div id=3D"ydpbbde71deyiv8911453369ydp18209e53yahoo_quoted_8887345848" c=
lass=3D"ydpbbde71deyiv8911453369ydp18209e53yahoo_quoted">=20
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, sans-seri=
f;font-size:13px;color:#26282a;">=20
<div>
On Monday, January 19, 2026 at 10:28:22 PM EST, DAVE HOGYE via Fot &l=
t;fot@autox.team.net> wrote:
</div>=20
<div>
</div>=20
<div>
</div>=20
<div>=20
<div id=3D"ydpbbde71deyiv8911453369ydp18209e53yiv2001255019">=20
<div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-ser=
if;color:#333333;">
<span style=3D"font-family:helvetica;font-size:12pt;">Glen,</span>
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-ser=
if;color:#333333;" class=3D"ydpbbde71deyiv8911453369ydp18209e53yiv200125501=
9default-style">
<span style=3D"font-family:helvetica;font-size:12pt;">I should hav=
e kept the FoT in the thread. Important stuff.</span>
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-ser=
if;color:#333333;" class=3D"ydpbbde71deyiv8911453369ydp18209e53yiv200125501=
9default-style">
<span style=3D"font-family:helvetica;font-size:12pt;">I noticed th=
is the first time I changed bearings. If I remember correctly, Timken=
, which I prefer, had a smaller radius and it didn't seat all the way. =
; It was seating down in the radius of the bearing. Of course I didn'=
t think to check that radius before installing it. Green and Timken o=
bviously have a different radius. I believe Southwick and Moser use t=
he Green bearings. There may be different part numbers from these com=
panies for different dimensions for the radius. I think the basic num=
ber is 9507. So, there might be a Timken with the needed radius=
. The Green number is 9507F or RW507E. </span>
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-ser=
if;color:#333333;" class=3D"ydpbbde71deyiv8911453369ydp18209e53yiv200125501=
9default-style">
</div>=20
<div style=3D"font-size:12pt;font-family:helvetica, arial, sans-ser=
if;color:#333333;" class=3D"ydpbbde71deyiv8911453369ydp18209e53yiv200125501=
9default-style">
<span style=3D"font-family:helvetica;font-size:12pt;">Dave H. =
;</span>
</div>=20
<blockquote type=3D"cite">=20
<div id=3D"ydpbbde71deyiv8911453369ydp18209e53yiv2001255019ydp1e43=
c2d1yahoo_quoted_9210540391" class=3D"ydpbbde71deyiv8911453369ydp18209e53yi=
v2001255019ydp1e43c2d1yahoo_quoted">=20
<div style=3D"font-family:Arial, Helvetica, sans-serif;font-size:=
16px;" class=3D"ydpbbde71deyiv8911453369ydp18209e53yiv2001255019ydp1e43c2d1=
yahoo-style-wrap">=20
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, sa=
ns-serif;font-size:13px;color:#26282a;border-left:1px solid #ccc;padding-le=
ft:8px;margin:0px 0px 0px 8px;" class=3D"ydpbbde71deyiv8911453369ydp18209e5=
3yiv2001255019ydp1e43c2d1inline_reply_quote_container">=20
<div>=20
<div id=3D"ydpbbde71deyiv8911453369ydp18209e53yiv2001255019ydp=
1e43c2d1yiv9099965939">=20
<div>=20
<div>=20
<blockquote type=3D"cite">=20
<div dir=3D"ltr">=20
<div id=3D"ydpbbde71deyiv8911453369ydp18209e53yiv20012550=
19ydp1e43c2d1yiv9099965939yqtfd71793" class=3D"ydpbbde71deyiv8911453369ydp1=
8209e53yiv2001255019ydp1e43c2d1yiv9099965939yqt1094362136">
</div>=20
</div>=20
</blockquote>=20
</div>=20
</div>=20
</div>=20
</div>=20
</div>=20
</div>=20
</div>=20
</blockquote>=20
</div>=20
</div> _______________________________________________
<br clear=3D"none"><a shape=3D"rect" href=3D"mailto:fot@autox.team.ne=
t" rel=3D"nofollow" target=3D"_blank">fot@autox.team.net</a>
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</div>=20
</div>=20
</div>=20
</div></blockquote><div id=3D"ydpbbde71deyiv8911453369yqtfd05666" class=
=3D"ydpbbde71deyiv8911453369yqt1155380869">
</div></div></div>_______________________________________________<br><a hr=
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--===============8721154167648921443==--
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