MB Madaera
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Chris Madaera
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Keelan Parham
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RenEx Pulley
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indexit

Hi,

A few months ago I started a project with Joshua to make the best possible pulley for a belt drive machine.

Many likely know how much I had attacked Joshua and RenEx. I put that to the side and got to work with Gus, Joshua and two engineers to make these pulleys.

For those interested they are made from 7075-t6 and hard Teflon anodized. They have two NSK extra large bearings in them, and pressed into a precision bore. These pulleys are very round, unlike the plastic standard ones. There are many design features and upgrades over the plastic ones and the previous stainless ones I had made.

These were made at a tool and die shop which IMO is an upgrade over a machine shop. We probably have more than 10k plus time into them, not including all of the free time from Gus, Joshua and myself.

They look very simple, but it wasn't easy to get these things to where they are. We went as far as having the pulleys put in simulation software for stress testing.

Hope you like the eye candy,

jeff
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bearings with stainless 316 T bushings installed
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making spacers for larger pulleys
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T bushing in process of being made.
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T bushing being machined
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BennyAnthonyOfKC

Missouri, USA

The elegance of how these pulleys were produced does photograph quite well.

On a fun note, they make think that roller-skates could be adapted for rails! :)
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Stress testing in software image.
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checking how poor the standard plastic ones are
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raw material... just starting to ruff in.

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making from prints
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simon-hecubus

Texas, USA

Of course only "feeling" is believing, BUT those look head-and-shoulders above what's been used to date (per pictures and previous descriptions).

Nice work.

Have they considered bringing you in for any other engineering improvements?

Do you have any other ideas?

Best,
Scott
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image machine spacers for extra wide pulleys.
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spacers
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