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Unread 04-02-2009, 10:19 AM   #1
JeepHammer
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One Piece Axle Bearing Information...

This information is directly from Superior and Moser Tech people.
(CONSIDER THIS FOR A 'STICKY'...)

IT'S ALL ABOUT THE BEARINGS YOU USE.

There are two bearing choices,
Timken p/n SET 9, and Green p/n RW-903CJ


===========================

MOSER ENGINEERING uses both Timken Set 9 and Green RW-903CJ

Moser p/n RW9CJ57 or 9CJ57 for SEALED 'Green' brand bearings,

Moser p/n 9CJTB for the Timken Set 9 Tapered Bearings
http://www.moserengineering.com/Page...lbearings.html

The Information from Moser is, they DO NOT use BEARING SPACER RING installed between INNER seal and bearing retainer.



SUPERIOR ONLY USES TIMKEN SET 9 TAPER BEARINGS,
(Although I'm under the understanding that Green Sealed Roller Bearings will work also.)

Superior Axle uses an INNER SEAL, Then a 'SPACER/ADAPTER' between Inner Seal and the lock ring for the bearings.
The purpose for this 'Spacer' is to keep the lock ring from rubbing on the seal.
(See 'Bearing Spacer Ring' in image above)

Use of that Spacer requires the locking ring to be machined for thickness.
(NOT inside diameter, or outside diameter, but thickness to 0.300" thick, about half of factory Timken Set 9 thickness)

Superior Part Numbers for parts,
Timken Bearing Set 9 with machined lock p/n A9
Machined lock ring p/n 3107D $16.24 Ea.
Spacer p/n 3107A $16.24 Ea.

Install kit, (one each) Set 9 Bearing, Machined Lock, Spacer, Inner Seal, Outer Seal, $53.05,
1 Each Per Side.
=================================

Here is the difference in the bearings...

Timken 'Set 9' are conventional taper bearings, they have very good load handling capabilities and are up to about anything you can throw at them, including extended high speed service.

Set 9 'Snaps' together in a peculiar way, but they aren't anything that are so different you won't be able to figure them out if you are used to wheel bearings.

The drawbacks will be on some of the aftermarket 'Clone' axles you will have to use SHIMS to set Pre-Load,

And in ALL CASES you will need an outer seal and you will need LUBRICANT to the Set 9 bearings.
Some people drill a hole in the inner seals so gear lube can circulate around the bearings,
Some people use both seals and wheel bearing grease.

In either case, you MUST use an outer seal and lubricant!
=================================

'Green' brand bearings are a fully spherical, round ball type bearing, not the taper bearings you are used to seeing in wheel bearing applications.

This means they will have less total load carrying capacity, so if you tow large boats, heavy tongue weight trailers, you are using your CJ as a tow truck, ect.
I'd pass on the 'Green' brand bearings.

Also, 'Green' brand bearings are SEALED BEARINGS, meaning they don't use outside lubrication.

The good points to that are contaminants can't enter the bearing and there is no messy 'Repacks'.

The down side is there is a VERY limited amount of lubricant available to the bearing, so that lubricant will get VERY HOT during operation.

This means in most cases, if you install an inside seal to keep the gear lube in the differential housing,
You can skip the outside seal.
With no lube at the outside seal, it's just going to burn up anyway...

ALTERNATIVE APPLICATION.
You can use BOTH seals, but put a small some gear lube in the bearing flange with the bearings anyway to keep rust down, and use an outside seal to keep the gear lube IN, and the mud, dust, rust OUT!


Last edited by JeepHammer; 04-02-2009 at 02:57 PM..
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Unread 04-02-2009, 01:19 PM   #2
DT5150
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great info jh. many thanks.

i wish moser had put that in the directions too. why would moser include the spacers in the kit if they're not used...after several attempts to get it right, i ended up leaving the spacers out and guess what.. things fit perfect. same thing with the thrust block. they didn't mention that at all either. if they had, it would've saved me several hours of frustration.
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Unread 04-02-2009, 02:55 PM   #3
JeepHammer
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Well, I spent about 2 hours on the phone, one with each place, and I figure while I'm typing the info out for my own files, might as well post it up here.

Thrust block is an issue with with some people, but Moser swears it's not an issue with the majority of people...
I have NO IDEA since we normally pull AMC axles and put in Dana axles or Ford 9"...
This is actually only the second set of once piece axles I've installed, so I though I'd get the low down directly from the 'Horse's Mouth'...
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Unread 04-02-2009, 06:18 PM   #4
1982cj8
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You cannot replace the Green bearings with the tapered bearings either, the axles are cut different from Moser for the different bearings, the axle for the green beaing does not have a seal surface cut outside of the bearing so you cannot put the outer retainer on.
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Unread 09-14-2009, 06:51 PM   #5
Totallymetal
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Quote:
Originally Posted by JeepHammer View Post
SUPERIOR ONLY USES TIMKEN SET 9 TAPER BEARINGS,
(Although I'm under the understanding that Green Sealed Roller Bearings will work also.)
Did you end up using the Green brand bearings on your Superior axles?
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Unread 10-06-2009, 12:03 PM   #6
neals80
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there needs to be a stickie on this one piece application...IMO
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Unread 10-06-2009, 02:00 PM   #7
jfwireless
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Used the Superior kit on my AMC20. Had to remove the thrust block as the axles would not go all the way in. This is a passenger side offfset AMC20 as I have a QuadraTrac full time TC. I did have to shim one side with one of the original shims I removed from the removal of the original axles. This is a stock orignal AMC20 that came with my 1976 CJ7.

Jim
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Unread 10-06-2009, 07:53 PM   #8
Totallymetal
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I did not remove the thrust block and burnt a bearing out within 200 miles. This time I called around to the many of the 4x4 shops in the Denver/Colorado Springs area. One shop knew exactly what I needed without hesitation and sold me this kit from Crown Automotive Sales, part # 7086K.


I put that number into a google search and voila! I paid $42 a side plus tax, and the kit fit my Superior axles perfectly.

This is per side... They are Timken tapered bearings.
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Last edited by Totallymetal; 10-07-2009 at 08:33 AM..
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Unread 10-06-2009, 08:06 PM   #9
neals80
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Thanks..hopefully all that comes with the new superior axles I ordered...I just am not sure how to remove the thrust block..do I have to remove the carrier??
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Unread 10-06-2009, 08:14 PM   #10
Totallymetal
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Quote:
Originally Posted by neals80 View Post
Thanks..hopefully all that comes with the new superior axles I ordered...I just am not sure how to remove the thrust block..do I have to remove the carrier??
I had to remove the ring gear (4.56) to remove the shaft that holds the thrust block, which meant the carrier did have to come out. It was because the shaft hit the ring gear teeth.

I think i could have done it with my old 3.54 gears and pull the block through the axle housing on the short end with a magnet.
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Last edited by Totallymetal; 10-07-2009 at 08:32 AM..
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Unread 10-07-2009, 08:26 AM   #11
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Couple of pictures of the dreaded thrust block.




Here's some shots of the Superior axles assembled. Instead of using the whole backing plate, I cut the center out of it to use as a shim. Only because I am running disc brakes.

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Last edited by Totallymetal; 10-07-2009 at 08:39 AM..
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Unread 10-07-2009, 08:29 AM   #12
neals80
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GReat pics thanks...
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Unread 10-07-2009, 08:44 AM   #13
JeepHammer
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good Pictures!
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Unread 10-13-2009, 07:39 PM   #14
a1mudpuppy
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Well I just did both sides and I did it like they should be done. Went maybe 100 miles and the left side started leaking. The bearing spacer ring trashed the bearing. I left it out this time along with the inner seal and put sealant on both plates and it's been working great so far. Now the right side started leaking and I'm going to do it this weekend. Great Pictures


Last edited by a1mudpuppy; 10-18-2009 at 08:01 PM..
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Unread 04-23-2010, 06:33 AM   #15
joes1982CJ
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I know this is an old thread but its got some really good info,,,, my question is how are some folks running without the bearing spacer? this isnt the first time i have heard of this which is why i ask,,, its seems to me you would have a bunch of slop.
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