Are you guys familiar with SAE 660 bronze and its strength? Would a 660 Bronze sleeve bearing be adequate to use as a spacer on a bolt that will tightened down to 40ft/lbs?

If not, do you guys have other, inexpensive suggestions?

 

what application is this for ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acnownzu &raquo;</TD></TR><TR><TD CLASS="quote">Are you guys familiar with SAE 660 bronze and its strength? Would a 660 Bronze sleeve bearing be adequate to use as a spacer on a bolt that will tightened down to 40ft/lbs?
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A bearing as a spacer? Bearings aren't cheap. Unless you mean to use the bearing for it's intended form.

 

It all depends on the size of the bronze sleeve that you are making. Depending on the wall thickness of the bushing it may or may not hold it. I work in a machine shop and I am familier with bronze but I have never really tryed to use it where you are tourqing down and crushing it. It might work though. Guess you will have to try it. Maybe you could look into using a peice of pipe. They sell small nipples at lowes or homedepot in some different materials.

 

I'm not quite sure what application you're talking about, but from some calculations, if you ran a two inch grade 8 5/16s bolt through a tapped one inch sleave of 6061-T6, the threads would fail at around 24 Ft/lbs.

The bronze is a softer metal than the 6061, so if you are talking about tapping it or applying an outward pressure, it would fail.

 

Need to space out rear lower tie bar in order to clear Beaks kit. Tried SAE 841 Bronze, but it started to deform with that much torque... was told that 660 Bronze is stronger.


Modified by acnownzu at 5:37 PM 10/22/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acnownzu &raquo;</TD></TR><TR><TD CLASS="quote">Need to space out rear lower tie bar in order to clear Beaks kit. Tried SAE 841 Bronze, but it started to deform with that much torque... was told that 660 Bronze is stronger.</TD></TR></TABLE>

Ok, is this a tapped piece to be bolted, a rotating bearing, or just a bronze bushing? Which way did it deform?

Matweb doesn't seem to have data on "841 Bronze", just 660, 40, and 64, the later of the two being a waste of time.

 

Bronze bushing... the 841 Bronze bushing I tried before started to balloon and the edges started to develop tiny fractures.

According to McMaster Carr, SAE 841 supports a static load of 1000 PSI... SAE 660 supports 4000 PSI.