New cutless bearing installation hiccup

[jansan]

Here is the problem:
I just spoke to Duramax about the bearing they sent me that was out of spec. To put a long story short, they admitted that the catalog dim. for the wall thickness for the "Back" (1.25 OD for a 1" shaft) is incorrectly stating as 3/64 (.046) and should be .058 mine measured close to .70 so there was very little rubber inside the shell (see photo).

Morris manufactures the "Blackfish" same Dim. except the wall is listed as 1/32 or .031. which seem a little thin and may be prone to mushrooming in a tight fit situation. I'm trying to find someone who can spec the part out to see what it really is.

Here is the rub:
Do I go with the Duramax and not have to worry as much about mushrooming during installation, but do worry about scoring the shaft if things get out of alignment, or do I go with the thinner wall Morris and hope it slides in with out too much force and then have much thicker rubber wall to buffer against scoring?

See if Duramax and Morris will give an exact dimension for the outer diameter ------- at least it would then give an intial guide of what to expect from the fit. As I previouslydesribed the P bracket material actually swelled as I was forcing the new bearing in, so my new inner bore size will now be bigger than before.

All these problems because the P bracket was designd with too little material around the bearing !! Your notion of a split bush type arrangement to locate the bearing sounds pretty ideal to me --------- seen it applied to many other applicatiions and reckon it would have been the absolute answer here.

 

[Maine Sail]

See if Duramax and Morris will give an exact dimension for the outer diameter ------- at least it would then give an intial guide of what to expect from the fit. As I previouslydesribed the P bracket material actually swelled as I was forcing the new bearing in, so my new inner bore size will now be bigger than before.

All these problems because the P bracket was designd with too little material around the bearing !! Your notion of a split bush type arrangement to locate the bearing sounds pretty ideal to me --------- seen it applied to many other applicatiions and reckon it would have been the absolute answer here.

Perhaps you were shipped a metric bearing in the wrong box. I have done a number of Catalina bearings and never heard of what you describe... Catalina installed it from the factory without distorting the strut..?

 

[Witzend]

In my case the OD of the "Back" is on spec. It's the ID of the brass casing that is not.
I have sent it back to Duramax they have concurred and are giving me a run around about the getting my money back. Does anyone know how to contact Mores, I can not find then on the web.

 

[Maine Sail]

In my case the OD of the "Back" is on spec. It's the ID of the brass casing that is not.
I have sent it back to Duramax they have concurred and are giving me a run around about the getting my money back. Does anyone know how to contact Mores, I can not find then on the web.

It's Morse Marine Bearings http://www.morsemarinebearings.com/

 

[Witzend]

Thanks, I talked with Morse and the wall thickness is as advertised @.038. I'm reading .036 on the original bearing, so I'm going with the Morse. Trying to getting all my money back from YSD is proving to be a problem.