Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?

Thanks.

On Feb 4, 5:59*pm, John Doe wrote:
Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?

Thanks.

That's a pretty broad question.

Bearing theory, materials, design and applications is encompass a huge
amount of information.

alt.mechanical.engineering is probably a better group to ping.
It used to be more active but got somewhat over run with spam.

I would suggest googling sintered bronze bearings / bushings and then
do some reading.

Consider narrowing your inquiry. You might get specific answers to a
more specific question.

cheers
Bob

"John Doe" wrote in message
eb.com...
Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?

Thanks.

I've had bad experiences with that type of load on Bronze bushings. I've
used Lignum Vitae wood bearings in slow turning high radial loads; MUCH
better than Bronze or ball bearings.

On Feb 4, 6:59*pm, John Doe wrote:
Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?

Thanks.

How much load and what kind of speed along with type of lubricant
supply would be pertinent questions. You can get quite good wear if
the load is constant but not heavy, the RPMs are moderate and oil is
supplied so that the wedge effect doesn't go away. Roller bearings
are used where there's really heavy and/or intermittent loads(like a
car wheel hitting potholes), constant lubricant supply is hard(ditto)
or where a constant film of lube can't be maintained. For decades,
don't forget, railroad cars used plain bearings with stuffing boxes
filled with oily waste for lube. Same with old-timey overhead belt
drives in machine shops, not a roller bearing to be seen. Not to
mention main bearings on most car engines. They're not sintered
bronze, but ARE plain bearings, as long as oil pressure is maintained,
they don't wear.

Archive.org has some elementary books on bearings, lubrication, and
design of same, might be some downloads would be in order.

Stan

On Feb 4, 7:59*pm, John Doe wrote:
Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?

Thanks.

Commonly used as pilot bearings for transmission input shaft in autos.
Sintered bronze with lube content usually marketed as Oilite. Nice
stuff to have around the shop to make emergency repairs or even
improvements on machines, whatever. Not often found in auto
transmissions, however. The usual ball and roller bearings are the
norm.

Joe

On 05 Feb 2011 01:59:53 GMT, John Doe wrote:

Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?


In general, ball bearings roll and bronze bearings slide. To get a
more useful answer, ask a more specific question.

--
Ned Simmons

Ned Simmons news nedsim.com wrote:

On 05 Feb 2011 01:59:53 GMT, John Doe jdoe usenetlove.invalid wrote:

Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?


In general, ball bearings roll and bronze bearings slide. To get a
more useful answer, ask a more specific question.

FWIW.
Already happened, and totally enjoyed.
--




















--
Ned Simmons


Path: news.astraweb.com!border6.newsrouter.astraweb.com! not-for-mail
From: Ned Simmons news nedsim.com
Newsgroups: alt.home.repair,rec.crafts.metalworking,rec.woodwo rking
Subject: Sintered Bronze bearings for radial/perpendicular loads?
Date: Sat, 05 Feb 2011 15:31:18 -0500
Message-ID: epcrk6h7o8iddn1d7upd3csfmn3kohbpd3 4ax.com
References: 4d4caf19$0$19053$c3e8da3$a9097924 news.astraweb.com
X-Newsreader: Forte Agent 4.2/32.1118
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Lines: 11
Organization: Unlimited download news at news.astraweb.com
NNTP-Posting-Host: 3dd89e54.news.astraweb.com
X-Trace: DXC=Xb;JG`EISSCmRUYobjn7jFL?0kYOcDh J5o6[nX]OU_IiMg6XalR7 E[^3AaXCNSKg5 d0`X:AFAYABKWIPmiXEB^QgGU9l\=J

On 2011-02-05, Joe wrote:
On Feb 4, 7:59*pm, John Doe wrote:
Generally speaking, how do Sintered Bronze bearings compare to
ball bearings for radial/perpendicular loads?

Thanks.

Commonly used as pilot bearings for transmission input shaft in autos.
Sintered bronze with lube content usually marketed as Oilite. Nice
stuff to have around the shop to make emergency repairs or even
improvements on machines, whatever. Not often found in auto
transmissions, however. The usual ball and roller bearings are the
norm.

FWIW The MGA sports car used needle roller bearings in the center of
the flywheel as a pilot bearing.

But -- the throwout bearing in the same car was a ring of
graphite captive in a forged cup against a ground steel ring in
the clutch assembly.

Enjoy,
DoN.

--
Remove oil spill source from e-mail
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---