Correct alternator bearing C2

[Jim R.]

Last year i had a fellow i know put new brushes and a bearing on my original alt , and made sure he didn't do anything to change the outside apperance although i noticed the big bearing on the back side looked flat and had letters and #s that looked out of place, can you get a correct looking bearing somewhere, i believe it was more rounded, possibly without markings. thanks to anyone who has any idea's

[Joe L.]

Re: Correct alternator bearing C2

Last year i had a fellow i know put new brushes and a bearing on my original alt , and made sure he didn't do anything to change the outside apperance although i noticed the big bearing on the back side looked flat and had letters and #s that looked out of place, can you get a correct looking bearing somewhere, i believe it was more rounded, possibly without markings. thanks to anyone who has any idea's

Jim-----


You're correct; the original slip ring end bearings had a cup with a larger radius than later. There were many part number changes over the years for this bearing. The last, which is still available from GM under GM #9441879, has the small radius periphery and is, thus, discernably different than originals. I don't know of a source for original configuration bearing assemblies.

[Gene M.]

Re: Correct alternator bearing C2

Jim,
The original bearings were made by Torrington.
Most replacements are made by INA.

Markings are very easy to sort one from the other.

[Jim R.]

Re: Correct alternator bearing C2

Gene any idea of the markings, and can a person still get one.

[Gene M.]

Re: Correct alternator bearing C2

Jim, If you find som old GM replacement part it will be the correct Torrington bearing.
Another source is a bearing wholesaler like Timken in your area. The original has the bearing info stamped on the back of it. I can't find my Torrington catalog or I would give you the part number.
Be advised Torrington offers this bearing with and without the seal as part of the bearing. I look for the one without the integral seal.
Google Torrington and you should find it.

[Jim R.]

Re: Correct alternator bearing C2

Thanks gene i will google....jim

[Peter L.]

Re: Correct alternator bearing C2

Jim - I think another source for the "original" bearing might be Hyatt Bearings or New Departure Hyatt Bearings because both were a Division of General Motors. It looks like Hyatt Bearings, Harrison, New Jersey became New Departure Hyatt Bearing, Sandusky, Ohio.

The Part Number listed in my Oct 1966 Chevrolet P&A in Group Number 2.298 is Part Number 7451326. The example I have has something stamped on the back surface but it is so lightly stamped I can't make it out.

Pete

[Jim R.]

Re: Correct alternator bearing C2

Thanks pete

[Wayne M.]

Re: Correct alternator bearing C2

....The Part Number listed in my Oct 1966 Chevrolet P&A in Group Number 2.298 is Part Number 7451326. The example I have has something stamped on the back surface but it is so lightly stamped I can't make it out...Pete

Pete, here's one I've had for a while. The printing is incredibly small. I have what I think is an original C.E. bearing in a Dec '63 alternator, and it has the same markings, except instead of "EFFFF" it has "HHHH" and what looks like "I", (or, maybe it's IHHHH) and it does not have the other printing on this NIB example (DBPT45719).

To Gene M. This one has the integral seal. Any reasons for wanting the bearing without ? Those darned seals are hard to install without damaging.

To Joe L. Does this new bearing have the greater radius around the visible edge (when installed) that you refer to ?

[Joe L.]

Re: Correct alternator bearing C2

Pete, here's one I've had for a while. The printing is incredibly small. I have what I think is an original C.E. bearing in a Dec '63 alternator, and it has the same markings, except instead of "EFFFF" it has "HHHH" and what looks like "I", (or, maybe it's IHHHH) and it does not have the other printing on this NIB example (DBPT45719).

To Gene M. This one has the integral seal. Any reasons for wanting the bearing without ? Those darned seals are hard to install without damaging.

To Joe L. Does this new bearing have the greater radius around the visible edge (when installed) that you refer to ?

Wayne----


Yes, it looks right to me. The strange thing is I can find no record of this 9432068 part number going back as far as 1962. From what I've found, it was never cataloged in the GM parts system for any Corvette or other Chevrolet application. It may be a Delco parts system-only part number, though.

[Gene M.]

Re: Correct alternator bearing C2

Wayne,
I just prefer the one without seal. I just like the way the rollers is captivated better. I'm sure there is no functional difference performance wise.