McMaster-Carr Bearings

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Harold_V
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Re: McMaster-Carr Bearings

Post by Harold_V » Wed Mar 19, 2014 1:00 am

warmstrong1955 wrote:Ummmmm.....maybe you're thinkin' 863, manganese-bronze? It can be less than pleasant to turn.
I agree. Manganese bronze is one of the most difficult materials I've machined. I rank it up there with titanium in that regard. Sure does cut nice and shiny, though.

Harold
Wise people talk because they have something to say. Fools talk because they have to say something.

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Bill Shields
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Re: McMaster-Carr Bearings

Post by Bill Shields » Wed Mar 19, 2014 9:16 am

titanium is easy...

cut it all day with one 0.4 mm diameter end mill with no worries
the next day...new tool.
Too many things going on to bother listing them.

doublereefed
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Re: McMaster-Carr Bearings

Post by doublereefed » Wed Mar 19, 2014 9:24 am

Bill,

Are those machined from rod to fit, or do they come in stock sizes like the bronze cast bushings?

Thanks,

-Richard

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cbrew
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Re: McMaster-Carr Bearings

Post by cbrew » Wed Mar 19, 2014 9:26 am

for what its worth, I also use 660 on all rod bearings, and at the direction from the engineer at the local bearing house. the axles are rolling on large oillites tho
If it is not live steam. its not worth it.

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warmstrong1955
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Re: McMaster-Carr Bearings

Post by warmstrong1955 » Wed Mar 19, 2014 9:51 am

doublereefed wrote:Bill,

Are those machined from rod to fit, or do they come in stock sizes like the bronze cast bushings?

Thanks,

-Richard
I machine them from cored bars. Most of what I use is Bunting. http://www.buntingbearings.com/index.ht ... bAodrC17zA

They have finished bearings in 'standard' sizes available in 660, but I don't use much 660, and more importantly, their standard dim's are not compatible with the equipment I work on. They do custom machining however, and I've had them make bushings to my drawings, from 954 and 863.

Bill
Today's solutions are tomorrow's problems.

Harold_V
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Re: McMaster-Carr Bearings

Post by Harold_V » Wed Mar 19, 2014 5:08 pm

Bill Shields wrote:titanium is easy...

cut it all day with one 0.4 mm diameter end mill with no worries
the next day...new tool.
I've read a great deal about machining titanium with modern tooling. A world of difference----

Harold
Wise people talk because they have something to say. Fools talk because they have to say something.

Ryker Carruthers
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Re: McMaster-Carr Bearings

Post by Ryker Carruthers » Wed Mar 19, 2014 5:25 pm

5x5 1/2" 150 psi 19 horse power, 865 ft. Pounds of torque to the crankshaft, AND a 7/8" oilite wrist pin bushing. I do believe you would be just fine ;-)
http://m.youtube.com/watch?v=GoEt3EPV5Xk



http://m.youtube.com/watch?v=au9VkvsWj3A



Grinning in southwest iowa,
Ryker

doublereefed
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Re: McMaster-Carr Bearings

Post by doublereefed » Wed Mar 19, 2014 7:04 pm

Bam. A fistful of bearings and pins. That 660 is easy machining. In 10 years I'll try the delrin or nylatrol.

These are for the main rods, the bushing material for the side rods hasn't arrived yet. I am so lucky that on this very old and very used engine that the driver pins are still very round...

Thanks for the help and shared info on this topic, really helped me out.

Best,

-Richard
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mainrodbushings1024.jpg

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