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Pins for Quick Attach

Discussion in 'Compact Equipment Attachments' started by Squizzy246B, Oct 23, 2005.

  1. Squizzy246B

    Squizzy246B Administrator

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    I'm appalled at the so called locking arrangement for the removeable pin on our Kubota excavator quick hitch. Its a bolt with a nyloc nut...sorry don't have a pic......but whats quick about that. I have been looking around for a suitable lynch pin/drop nose pin etc or the like but most are too light duty and last about 5 minutes...maybe the nut and bolt aren't such a bad idea... :rolleyes: or are they just keeping us in the dark down here :spaz

    So what do you northern hemisphere guys use on your excavator hitches??. There has to be something a bit....quicker :eek2
     
  2. CascadeScaper

    CascadeScaper Senior Member

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    Our Q/C is a pin grabber, essentially. It's hard to explain how it works, but there's 2 big pins on the bucket, all you gotta do is get the top one notched into the slot on the Q/C and curl the bucket in and snap, she's on. Taking it off is pretty quick, you have to muscle it a little bit though. To take it off, set bucket flat, pull a spring loaded pin on the back of Q/C and lift up on the front of the bucket and she pops right out. I'm really a fan of hydraulic Q/C's, Cat has a nice one that all of their rental machines up here are equipped with. It's a wedge-lock hydraulic coupler, so it doesn't rob any breakout force and it's really quick. Switching from a bucket to a breaker is pretty fast, I can almost do it in the time that it would take me to change attachments on the skid steer, that is if the hydraulic lines don't give me any hassle.
     
  3. Squizzy246B

    Squizzy246B Administrator

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    Ours has the two pins, probably about 2" in diameter. You curl the hitch into the front pin then, when aligned, you push the second pin in by hand and install the locking clip/pin/bolt. Takes about 5 mins to change to the breaker on your own and if everything is clean. I just think the locking arrangement is half arsed. I take a pic today and post it.
     
  4. xkvator

    xkvator Senior Member

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    i think the only thing that would be as durable as the bolt would be a cotter pin.
    you could machine a groove for a snap ring.
     
  5. Squizzy246B

    Squizzy246B Administrator

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    Here's the pic
     

    Attached Files:

  6. xkvator

    xkvator Senior Member

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    Too much excess pin sticking out IMO...especially if that's a narrow bucket...the pin would be digging into the trench sidewall.
    I'd machine a snap ring groove - like Case uses - and cut off exess pin.
    I've also welded a snap ring protector on narrow buckets...just a 1/4" long piece of 2 1/2 - 3" pipe.
     
  7. Squizzy246B

    Squizzy246B Administrator

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    Yes that is the 12" trenching bucket and yes there is too much pin. That pin is for our demolition bucket which has a boss welded to the cheek plate and is drilled for the pin to align so it is protected. However, I am looking for something quicker than the bolt and nut. Not sure what the Case has, will keep an eye out. Do you have any pic's...anybody?
     
  8. Nac

    Nac Senior Member

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    What you need is a lynch pin it is a pin with a snaping circle that what I have on my hammer mount and never had a problem.
     
  9. Nac

    Nac Senior Member

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    Here is a pic.
     

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    • pin.jpg
      pin.jpg
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  10. xkvator

    xkvator Senior Member

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    here's the snap ring...least amount of pin sticking out
     

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  11. xkvator

    xkvator Senior Member

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    the lynch pin is ok if it's not actually in contact with the dirt
     

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  12. xkvator

    xkvator Senior Member

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    cotter pins are better than bolt/nuts IMO
     

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  13. Squizzy246B

    Squizzy246B Administrator

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    Thanks for the pic's. Yes I have tried the lynch pins and they just don't last long. The cotter pin is OK but I'm looking for something that is inherently locked. Anyway, I'll keep looking. Thanks again, much appreciated.
     
  14. RJG

    RJG New Member

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    ...
     
  15. d4c24a

    d4c24a Senior Member

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    lynch pin

    i use jcb lynch pins as they snap onto their selfs with a groove and do not come apart easily i will take a pic tomorrow if i remember :)
     
  16. d4c24a

    d4c24a Senior Member

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    lynch pins

    here are some pictures of the locking lynch pin ,these do not come apart easily unlike other types
     

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  17. Squizzy246B

    Squizzy246B Administrator

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    Great pics D4c, I solved my problem by getting a Hydraulic Quick Hitch:D
     
  18. d4c24a

    d4c24a Senior Member

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    good

    thats even better :thumbsup
     
  19. Goat

    Goat Member

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    Take a look at www.minimiller.com. They have mechanical pin grabber couplers for mini-ex's. They have a new hydraulic one as well. Their buckets look pretty smart.
     
  20. Hendrik

    Hendrik Senior Member

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