Re: caged needles for gearbox shafts

Jerome Yuzyk (jerome(at)supernet.ab.ca)
Fri, 17 Jul 1998 11:39:18 -0700

In article <199807161846.LAA27849(at)mail-lax-2.pilot.net>, "Jarrid Gross (Yorba Linda, CA)" <GROSS(at)UNIT.COM> wrote: > Jerome,
>
> The input shaft is the fastest spining entity in the gear box, and the
> rotational rate of those little rollers is more than 100,000 RPM
> at speed.
>
>
> Something to think about.
>

Still thinking. I asked the bearing rep, and he said:

-----------

Jerome

Loose needles are preferred for low speed applications. At the speeds you're running you would be better off with the cages. 

--
Matthew Murphy         mailto:mmurphy(at)eriebearings.com
Erie Bearings Co.     http://www.eriebearings.com


Jerome Yuzyk wrote:


> Matthew Murphy <mmurphy(at)eriebearings.com> wrote:
> > Jerome:
> >
> > The full INA P/N is K19x23x17A.  Looking forward to your reply.
>
> I am getting mixed reviews about the suitability of this bearing format.
> Perhaps you could assist me if I give you some application details.
>
> The bearings would be used on the layshaft and input shaft of my car's
> 4-speed gearbox. The car is a 1962 4-cylinder British convertible that
> puts out 80bhp max, and redlines at 5800 rpm (though I never rev past
> 4500). I will use it to drive in the summer, and hopefully take some
> longer trips. I don't race or stunt.
>
> What I am most interested in is whether the cages will outperform and
> outlast needles, so there's one less reason to open the gearbox down the
> road. Installation convenience is secondary. To my mind, 27 needles
> provide more bearing surface than <27 in a cage, though perhaps
> suffering from less lubrication due to tighter packing.
>


Still thinking.



-- 


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