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Thread: One Way Bearing Ratchet Style Wrench

  1. #1
    Supporting Member tmate3's Avatar
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    One Way Bearing Ratchet Style Wrench

    Back in my hot rod days, I often found myself in a situation where the space was too confining for my ratchet wrench to move back and forth between clicks -- an awkward way to explain it, but the best I can think of.

    I came up with a wrench that used a one-way bearing that had zero backlash, if that's what one might call it. I came across it while cleaning out an old toolbox the other day, and thought I would share it. It was not the best fabrication, but it worked as long as a whole lot of torque wasn't required. To reverse it, I moved the socket to the other side.

    One Way Bearing Ratchet Style Wrench-one-way-bearing-ratchet.jpg

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  2. The Following 11 Users Say Thank You to tmate3 For This Useful Post:

    baja (Feb 5, 2021), byates (Feb 25, 2023), Jon (Feb 4, 2021), olderdan (Feb 5, 2021), Paul Jones (Feb 5, 2021), RetiredFAE (Feb 4, 2021), rgsparber (Feb 7, 2021), Scotty1 (Feb 4, 2021), Toolmaker51 (Feb 25, 2023), tooly (Dec 19, 2022), volodar (Feb 5, 2021)

  3. #2
    Supporting Member IntheGroove's Avatar
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    Also known as a freewheel clutch. Great idea...

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    volodar (Feb 5, 2021)

  5. #3
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    Think I had some wrenches like that. Had ball bearings in it that would jam. Turn over for going the other way. But that was back in the 70s.

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    RetiredFAE (Feb 4, 2021)

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    Rorschach's Tools
    It uses the standard ratchet type mechanism but I also have a commercial one way ratchet. Instead of the 1/2" square "pin" sticking out, it has the 1/2" square hole going through it instead.

  8. #5
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    old kodger's Tools
    In an automatic gearbox it's called a sprag clutch

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    volodar (Feb 5, 2021)

  10. #6
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    Thanks tmate3! We've added your One Way Socket Handle to our Fastening category,
    as well as to your builder page: tmate3's Homemade Tools. Your receipt:




  11. #7
    Supporting Member olderdan's Avatar
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    Looks like it uses a one way needle roller bearing, I made similar here
    Motorcycle service starter clutch
    But I did not think about using it for a ratchet socket replacement so now I have a futher use for it, thanks for the idea.

  12. #8
    Supporting Member sossol's Avatar
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    Ratchets with sprag clutch are big in aerospace. Some are designed to slip at a specific torque.

    I have consumer ratchets with sprag clutches. Staney sole one with a drive pin that you pushed to the other side to reverse direction. IIRC they called it a noiseless ratched. It's a great idea.

    Neil



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