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  1. #21
    Platinum Member the old grind's Avatar
    Join Date
    Jul 2012
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    634
    Location
    Mid-Michigan
    Tractor
    NH T-1520 HST, JD 5210 2WD, Terramite T5C

    Default Re: Pin to bushing clearance?

    Guys, I'll take my inquiring mind to the sideline now, but want to follow the thread. btw: 'Googled' DOM to find that most is mild steel that would wear out quickly & wouldn't fare well as bushing stock...

    Dave, thanks for jumping in and letting my good intentions off the hook. I did do a wee bit of welding decades ago during my (toolmaking) apprenticeship, where getting a whole part glowing like a light bulb wasn't appreciated as often as I managed it. I might have known it was no biggie this time. (perhaps a blessing?) btw: Nice work, there!!

    Steve, .. pics when you git 'er done??
    Last edited by the old grind; 04-08-2013 at 12:45 PM.

  2. #22
    Platinum Member
    Join Date
    Feb 2012
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    779
    Location
    Albany OR
    Tractor
    Case 580B, Long 460, Allis-Chalmers 160

    Default Re: Pin to bushing clearance?

    'nuther iggorant savage here, but try surplus hydraulics - search on cross tube, it should come up with a lot of cylinders that use "cross tube" ends, instead of the usual yokes. Maybe that's where the crosstube material is coming from, as in replacement ends for that type cylinder??!?

    Dunno, see first part of post :=)

  3. #23
    Veteran Member
    Join Date
    Jul 2003
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    1,480
    Location
    SW Indiana
    Tractor
    Ford 1920 4x4 (traded in on Kubota). Case 480F TLB w/4 in 1 bucket, 4x4. Gehl CTL60 tracked loader, Kubota L4330 GST

    Default Re: Pin to bushing clearance?

    Quote Originally Posted by the old grind View Post
    Guys, I'll take my inquiring mind to the sideline now, but want to follow the thread.

    Dave, thanks for jumping in and letting my good intentions off the hook. I did do a wee bit of welding decades ago during my (toolmaking) apprenticeship, where getting a whole part glowing like a light bulb wasn't appreciated as often as I managed it.
    Old Grind,

    Hope you don't wander off too far, this board can use a few more tookmakers!

    John

  4. #24
    Veteran Member
    Join Date
    Mar 2013
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    1,404
    Location
    Edmonton, Alberta
    Tractor
    MF 135

    Default Re: Pin to bushing clearance?

    I had to make a special top link for a custom scarifier I made. I used a piece of 1 1/2" by 3/16" wall sq. tubing and for the pin ends, went to Princess Auto and found the weld on bushings for the end of hyd. cylinders. They were about a 1/4" wall and fit 3/4" pins perfect. They even have a hole for a grease fitting. Larger cylinders use 1" and even bigger pins.

  5. #25
    Silver Member
    Join Date
    Jul 2011
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    103
    Location
    Billings, MT
    Tractor
    kubota L3400, Farmall 'A', Farmall F-14, Ford 860, JD 4520

    Default Re: Pin to bushing clearance?

    AH HA, Cross tubes on the end of a cylinder, I get it now. I'll check with the hydraulic shop tomorrow and find out what the scoop on cross tubing is and post what I found out. Yes, I want to try my hand at building a smallish size backhoe for the kubota L3400. Right now I'm getting everything together to add a rear remote to the little guy. I plan on hiding the single spool valve where the draft control lever is supposed to be. I will take some decent pictures this time. As far as the backhoe, Im slowly gathering up materials for that as well. So far I came up with some 4" square tubing and have 3 cylinders at the ready. It all takes time, and a small fist full of money.

  6. #26
    Veteran Member
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    Mar 2013
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    Edmonton, Alberta
    Tractor
    MF 135

    Default Re: Pin to bushing clearance?

    When you get your control valve, make sure you get one that allows more than one function at a time. I forget the proper terminology but the key to smooth backhoe operation is using 2 or more functions at the same time.

  7. #27
    Gold Member
    Join Date
    Jan 2006
    Posts
    355
    Location
    Stone Mountain, GA
    Tractor
    Case 1210, Mitsubishi D2050

    Default Re: Pin to bushing clearance?

    4130 steel DOM tubing is sold in sizes to use for bushing material, is weldable and tough. McMaster Carr sells it, typically with .010 clearance over standard sized cold rolled rod. I just looked on their site, and a 6 foot piece of 1.010 is about $75. Other places that sell DOM tubing may also carry it, it's fairly common.

  8. #28
    Platinum Member
    Join Date
    Nov 2008
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    711
    Location
    Brampton, On\lot Powassan, ON Canada
    Tractor
    Kubota B4200\MF 135\Kubota B3200

    Default Re: Pin to bushing clearance?

    Quote Originally Posted by Steve in MT View Post
    David, you have my attention. Can you tell me what the wall thickness is on the cross tubes? Looking at your bucket, they appear to be about 1/4" which is about the size on a factory bucket. Sorry, but I have not heard of "Cross tubes" before. What are they and what were they designed for? When you built your backhoe, were you able to use these in the center pivot position as well? I dont recall that DOM was cheap to buy but thats what I was able to come up with at the time that I built my quick attach. Inquiring minds need to know (and I'm sure that I'm not the only one)
    Steve
    As you have found out, cross tubes are used to build hydraulic cylinders. They are indeed 1/4 wall for the one inch size. For my backhoe main boom and boom pivot, I used a larger size crosstube. 1 1/4 with a 3/8 wall.
    Unimogdave

  9. #29
    Silver Member
    Join Date
    Jul 2011
    Posts
    103
    Location
    Billings, MT
    Tractor
    kubota L3400, Farmall 'A', Farmall F-14, Ford 860, JD 4520

    Default Re: Pin to bushing clearance?

    As per David's suggestion, I went to the hydraulic shop to check out cross tubes. They didnt have anything in stock so I ordered 2 pieces of 1"id and 1 piece of 1-1/4id. I hit the poor guy right at closing time so I didnt ask him prices and told him to just put them on his next stock order and not to special order them. I didnt figure that these will put me in the poor house (I'm already there)and they will get used. ThomasH suggested McMaster Carr and had to Google them as I never heard of them. He is right, they have a bunch of odd size tubing and if I ever have to have a long piece to cut up then this is the way to go. McMaster Carr also has that same oddball tubing that I have which measures .995id. I didnt measure this stuff when I bought it and assumed that it was 1" id which is also why my 1"pins didnt fit and I had to burr bit the stuff. I still have a little bit of the tubing left and want to be able to use it and searched around for reamers and found one on ebay for $29.99. This is a Ford kingpin reamer and measures 1.004 so in theory it should work just fine. This reamer is NIB and is old stock. I checked around and to buy one of these new and fresh will set a person back about $100.00 bucks or more so therefore not worth it to have sitting in the tool box. Thanks for all the answers.
    Steve

    -reamer-jpg

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