McMaster-Carr Bearings

[Harold_V]

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

[Bill Shields]

titanium is easy...

cut it all day with one 0.4 mm diameter end mill with no worries
the next day...new tool.

[doublereefed]

Bill,

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

Thanks,

-Richard

[cbrew]

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

[warmstrong1955]

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

[Harold_V]

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

[Ryker Carruthers]

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]

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