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  1. #1

    Join Date
    Jul 2003
    Posts
    18
    Location
    Kay county,Oklahoma
    Tractor
    Kubota B-2910

    Default Shear pins

    I was wondering what most everyone is using for there shear pins? When brush hogging is everyone using a soft Grade 2 bolt ,so it wont damage the gear box,or a grade 5 bolt. It seems like the grade 2 is really to soft sometimes and they get broken all the time.I know thats the general idea, but I have done the same thing with those grade 5 bolts and I have never damaged anything.

  2. #2
    Gold Member twabscs's Avatar
    Join Date
    Jul 2003
    Posts
    269
    Location
    NW Missouri
    Tractor
    NH TC40D, CaseIH Farmall 95, 105U

    Default Re: Shear pins

    Hi fordman,

    I think you'll find most everyone here follows their manuals, which typically recommends grade 2 bolts. It's not the gear box I'm worried about, it's the tractors PTO.

    I got tired of changing shear bolts too and so upgraded to a slip clutch. If you search through the archives there are lots of discussions on shear bolts and slip clutches.

    Tom

  3. #3

    Join Date
    Jul 2003
    Posts
    18
    Location
    Kay county,Oklahoma
    Tractor
    Kubota B-2910

    Default Re: Shear pins

    Thanks twabscs
    You wont believe this, But I have double checked in the kubota's manuals and it does not say anything about it anywhere. So I called the manufacturing company of my brush hog and they said to use grade 5. I asked them about PTO damage and they said, thats all they have ever used for many years with no problems.Bye the way....that is Howse MFG.

  4. #4
    Veteran Member BillyP's Avatar
    Join Date
    Dec 2002
    Posts
    1,768
    Location
    Eagletown, OK
    Tractor
    JD 4610 ehydro MFWD

    Default Re: Shear pins

    I have a tiller that uses grade 5 shear bolts.

    Just because most people say to use a grade 2 doesn't mean it's the right one [img]/forums/images/graemlins/wink.gif[/img]

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