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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Backhoe Pins - what metal to use?

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john_bud

03-05-2006 17:28:24

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Hi,

My Ford 723 hoe is real loose and needs pins and bushings. FNH tells me that nothing is available, so it looks like they will have to be made. What metal alloy should be used? Profile for hardening?

Hints, tricks and sources are very welcome!

Thanks,
jb

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Chuck Hilton

03-07-2006 19:05:27

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Re: Backhoe Pins - what metal to use? in reply to john_bud, 03-05-2006 17:28:24

What I commonly use is old hard chrome hydraulic rod. It comes in many sizes and is ussually free at a hydraulic shop that you do busness with. Ask if you can look in thier dumpster. You will need to grind through the chrome to drill or cut it but it wears very well. Chuck

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NC Wayne

03-06-2006 14:42:46

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Re: Backhoe Pins - what metal to use? in reply to john_bud, 03-05-2006 17:28:24

I have to agree with Jdemaris, something like a 4140 or 4142 grade material is about the best you can get for your appication. We've made many pins over the years for equipment, including foot pins for crane booms, and that's aways what we use. As long as you keep them greased you'll not have any problems and you'll get a long life out of them.

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Cory M

03-06-2006 08:45:21

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Re: Backhoe Pins - what metal to use? in reply to john_bud, 03-05-2006 17:28:24

I would recomend drill rod it is easy to work machinable but is oil hardining so you can heat it to red then throw it in a can of oil and its about RC 50. you can get it at enco on the web or 1 800 use enco 1" x 3' is $15. They also have premade bushings a little cheaper than McMaster Carr

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jdemaris

03-06-2006 05:48:15

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Re: Backhoe Pins - what metal to use? in reply to john_bud, 03-05-2006 17:28:24

I've made the pins and bushings for most of my equipment including my 4000 Ford with 723 and 724 hoe and loader. There are at least three good ways to go. #1 find something currently available for some other equipment that fits - that can be expensive and time-consuming. #2 - find pre-hardened pin-stock and bushing-stock - but you cannot drill it (usually). #3 Use medium hardness stock that can be hardened, if wanted, later after any machining is done. I don't like it too hard since I'd rather have the pins wear faster than the bushings - they're easier to make and change. You can buy from places like>Link
http://www.connexusa.com/HTML/bushings1.html

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john_bud

03-06-2006 19:45:26

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Re: Backhoe Pins - what metal to use? in reply to jdemaris, 03-06-2006 05:48:15

Thanks guys!

Would have answered sooner, but I spent the day putting on a weld in edge for the bucket to hold a bolt on cutting edge. Old one was busted up into about 8 pieces.

I priced drill rod and 4140. Looks like the old hoe will be getting some new 4140 pins!

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