Another IMS bearing thread

[Walter White]

I got an oil seal that looks like it might fit into the end of the single row bearing IM shaft, as shown in my previous post.
It is a Beck-Arnley 052-3380. Can get these off eBay.

It is listed as 32 x 47 x 6 mm.
The outside diameter is about 2.865', where the bearing OD is 2.850", so it looks like it would be a nice snug fit into the shaft.
It is about .235" thick, but the edges are beveled so .200" is the required depth that will give maximum bite into the end of the IM shaft. I hope the distance from the bearing retaining snap ring to the end of the shaft is greater that .200". I know the end of the shaft is beveled so a little is lost on that bevel.
It is listed for a shaft diameter of 32 mm.
These seals are listed mostly as camshaft and tranny input shaft seals.

Some other seals that have a 47mm OD...
30 x 47 x 17 052-4002
32 x 47 x 10 052-3139
32 x 47 x 10 052-4005
32 x 47 x 8 052-3379
33 x 47 x 7 052-3288
35 x 47 x 7 052-3192
35 x 47 x 7 052-4000

[Walter White]

Beck-Arnley 052-3380

[Walter White]

I am looking for the dimension shown below, from a single row (2000 - 2004) IM shaft. It is the distance from the snap retainer ring to where the bevel starts on the end of the IM shaft.
Thanks in advance.

[boxster]

How does the earlier generation dual row bearings compare to the single row?
what is the rate of them failing compared to the single row?
from what ive read it seems that the dual row are not as prone to failing as the single row, any thoughts on this?

[Jamesp]

As measured from the rightmost face of the shaft

face of shaft to bend of bevel = 1.8 mm

face of shaft to snap ring 2.9 mm

so, 2.9 - 1.8 = 1.1 mm

Confident of a tolerance of 0.1 mm on all measurements

[Jamesp]

Originally Posted by boxster

How does the earlier generation dual row bearings compare to the single row?
what is the rate of them failing compared to the single row?
from what ive read it seems that the dual row are not as prone to failing as the single row, any thoughts on this?

The single row failure rate is ~8x the dual failure rate.

[Walter White]

Thanks again James. I was hoping for more depth in the bearing bore. It appeared there is significantly more depth on the bearing bore in photos, but photos can be misleading, or there may be variances in casting/machining.
Back to the drawing board.
I am following your work.

[boxster]

Thanks jamesp. I have a 99 box. I assume i have the dual row. Do you think i can rest my mind and take care of the situation when the clutch goes? I have 73k miles on the clock. Or would it be wise to just do it asap? Has the ims bearing issue come to a stage where the question is when it will go,rather than if?!