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  1. #1
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    Default Can you buy splines sockets and shafts off the shelf?

    Hi all,

    Just wondering if it is possible to buy splined shafts and sockets off the shelf or are they usually custom made?

    If you can, where would be the best place to source them from.

    I am after a socket to suit a 38 splined shaft that is 20mm in diameter. Here is the photo of the splined section.

    Thanks

    Sent from my SM-G935F using Tapatalk

  2. #2
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    Default

    There is a limited selection available, i have bought bushes to suit splined drives on hydraulic pumps before, I got them from our hydraulics supplier, but i think a bearing/power transmission supplier might be a better bet.

  3. #3
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    Default

    Spend some time and search this companies' catalogues - or call them: https://www.smallparts.com.au/store
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  4. #4
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    Default

    The common industrial/agricultural spline standards are often available off the shelf, but they're much larger than that.

    What's it off? 38T with 20mm OD could be 0.5 Module but we'd need more numbers to confirm it.
    Gear cutting specialists and general engineers www.hardmanbros.com.au
    Fine pitch gear cutting from 0.1 Module www.rigear.com.au

  5. #5
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    Quote Originally Posted by elanjacobs View Post
    The common industrial/agricultural spline standards are often available off the shelf, but they're much larger than that.

    What's it off? 38T with 20mm OD could be 0.5 Module but we'd need more numbers to confirm it.
    It's off a Hafco drill press for the table rise and fall. What other numbers would you need?

    Sent from my SM-G935F using Tapatalk

  6. #6
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    The part number, because I reckon that's going to be the cheapest solution for a Hafco. Not trying to be a smartass, it's just that having stuff like that made is not going to be cheap.

    Maybe this will work? Even if you have to replace the whole thing and not just the handle https://www.machineryhouse.com.au/3DA8800 Have you tried contacting Hafco?

    You could even just pull it apart and machine the splined end down to suit an off the shelf crank handle because those are dirt cheap https://www.machineryhouse.com.au/DW009
    Gear cutting specialists and general engineers www.hardmanbros.com.au
    Fine pitch gear cutting from 0.1 Module www.rigear.com.au

  7. #7
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    Default

    I already have the original handle for it, I was planning to motorised it, so was hoping to find something that fits it off the shelf with the correct spline that I could easily attach to a motor.

    Sent from my SM-G935F using Tapatalk

  8. #8
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    Ah now I get it. Bare minimum I'd need OD, root diameter and an accurate measurement over pins. A couple of small drill bits would do, I'd have to check the standard for the size but I imagine it would be around 1.2mm

    Can it be cut through, or does it need to be closed on one end? Cut through I might be able to sneak through the wire EDM, blind would have to be shaped and I'll have to go through the proper channels.
    Gear cutting specialists and general engineers www.hardmanbros.com.au
    Fine pitch gear cutting from 0.1 Module www.rigear.com.au

  9. #9
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    Quote Originally Posted by elanjacobs View Post
    Ah now I get it. Bare minimum I'd need OD, root diameter and an accurate measurement over pins. A couple of small drill bits would do, I'd have to check the standard for the size but I imagine it would be around 1.2mm

    Can it be cut through, or does it need to be closed on one end? Cut through I might be able to sneak through the wire EDM, blind would have to be shaped and I'll have to go through the proper channels.
    It can be cut through, that wouldn't be an issue.

    I'll see if I can get some more accurate measurments. If I can't get something that will work off the shelf I probably wouldn't bother.

    Maybe I can attempt to broach it manually on a mill with a rotary table, it would be a slow process but for a one off probably wouldn't be that big a deal.

    Sent from my SM-G935F using Tapatalk

  10. #10
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    Quote Originally Posted by Com_VC View Post
    Maybe I can attempt to broach it manually on a mill with a rotary table, it would be a slow process but for a one off probably wouldn't be that big a deal.
    Make a plaster cast of a section and grind a tool to fit, after all, the tool is just one spline tooth with some clearance angles; that's how we do it for odd sizes that don't seem to fit any standard.
    Gear cutting specialists and general engineers www.hardmanbros.com.au
    Fine pitch gear cutting from 0.1 Module www.rigear.com.au

  11. #11
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    Borgeson Universals in the USA might have something.
    In my previous life I bought a few bits from them (around 2007-8) and they were excellent to deal with.
    One of the things I bought was a steering uni. It had to have a spline in one and the other end to be a plain bore with the outside unmachined so I could machine it myself to take a cotter pin.
    They didn't have that combination as a stock item but not a problem, they just pulled one end of a uni from the line before it was machined down.
    The price was really reasonable too at the time.

    peter

  12. #12
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    Unless originality is important, a scotch key is cheap and effective.

  13. #13
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    Quote Originally Posted by nadroj View Post
    Unless originality is important, a scotch key is cheap and effective.
    I would have to change the shaft if I wanted to use a keyway type setup, I don't really want to pull the shaft out, I think it would be a lot of work.

    I thought of a clamping collar type arrangement as well, seeing that there is very little load on it, it would probably work fine.

    Sent from my SM-G935F using Tapatalk

  14. #14
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    Quote Originally Posted by Com_VC View Post
    I don't really want to pull the shaft out, I think it would be a lot of work.
    Not necessary to dismantle anything if the material can be drilled.
    An axial hole is made at the junction of the shaft and handle, so half of an inserted pin engages with each.

    It's called a round key in this illustration:
    https://res.cloudinary.com/engtips/i...s/image002.jpg

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