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  1. #1
    Platinum Member Henri88's Avatar
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    2008 JD 2305

    Default What shear bolt grade would you recommend?

    New to brush cutting. I have a new to me Howse 4' rotary cutter and a 2305 JD with 18hp pto. The Howse manual recommend grade 5 or lower so my choice is either 5 or 2. I am leaning more towards the grade 2 but I'm worry that the shear bolt would be prone to shear easily. Your thoughts.

    I will be using it on a 1 1/2 acre with mostly grass, but we did cut some Hawthorn and apple trees. I also know all about the slip clutch but would like to stick with the shear bolt if possible.

    Henri
    Henri

    How could you be told I was french?

    Rotary cutter 4' Howse , mid mount mower 54'' , f.e. loader 200CX , tiller RT1150 Frontier , cultivator PC1001 Frontier , middle buster PM1001 Frontier , JD 47'' front snowblower , pallet forks , grass-sweeper , quick hitch Speeco , trailer hitch , cab Jodale-Perry , trailer 16' galvanized Easy-Hauler ,

  2. #2
    Platinum Member
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    Jul 2012
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    Southeast Minnesota
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    JD 4720, JD X748SE, JD 997, Farmall "B"

    Default Re: What shear bolt grade would you recommend?

    Quote Originally Posted by Henri88 View Post
    New to brush cutting. I have a new to me Howse 4' rotary cutter and a 2305 JD with 18hp pto. The Howse manual recommend grade 5 or lower so my choice is either 5 or 2. I am leaning more towards the grade 2 but I'm worry that the shear bolt would be prone to shear easily. Your thoughts.

    I will be using it on a 1 1/2 acre with mostly grass, but we did cut some Hawthorn and apple trees. I also know all about the slip clutch but would like to stick with the shear bolt if possible.

    Henri
    I would start with the safe bet, and use a grade 2. If it proves to be unworkable, then go to a grade 5.

  3. #3
    Super Member RickB's Avatar
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    Eastern NY
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    Case 885, Ford 4000

    Default Re: What shear bolt grade would you recommend?

    Quote Originally Posted by arlen4720 View Post
    I would start with the safe bet, and use a grade 2. If it proves to be unworkable, then go to a grade 5.
    Good plan.
    We have too much gun control.
    What we need is more idiot control.

  4. #4
    Platinum Member Henri88's Avatar
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    2008 JD 2305

    Default Re: What shear bolt grade would you recommend?

    Tx guys! Does shearing a bolt while bush cutting a common thing. Sorry but I am completely green to this activity.
    Henri

    How could you be told I was french?

    Rotary cutter 4' Howse , mid mount mower 54'' , f.e. loader 200CX , tiller RT1150 Frontier , cultivator PC1001 Frontier , middle buster PM1001 Frontier , JD 47'' front snowblower , pallet forks , grass-sweeper , quick hitch Speeco , trailer hitch , cab Jodale-Perry , trailer 16' galvanized Easy-Hauler ,

  5. #5
    Elite Member newbury's Avatar
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    From Vt, in Va, retiring to MS
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    Kubota's - B7610, M4700

    Default Re: What shear bolt grade would you recommend?

    I just faced that with my Agrisupply PHD. The manual says grade #5. I bought a handful of #2's. I figure break $5 worth of bolts is better than $100 of PTO or $300 of PHD.
    My rides - '95 Kubota M4700 w/ PEC, LA1001 FEL :'07 B7610, LA352 FEL, Bush Hog SBX 48 box blade, '09 Woods BH70-X w/ 16" bucket and thumb, 3pt pallet forks, Dale Phillips PHD, Jinma 8" chipper, 2 Piranha's, Winco 12KW PTO generator, Howse plow, 5' KK tiller, 5' Big Bee cutter, with a 2002 7.3L Ford F350 CC DRW 4x4 and '07 18' Hudson HSE Deluxe trailer - 5 Ton to haul it all

  6. #6
    New Member
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    Default Re: What shear bolt grade would you recommend?

    I wouldn't be worried about running grade 5 bolts. At CNH (and I would assume Howse is the same) components are engineered based on grade 8 shear bolts with the assumption that someone will attempt it. I'm used to property where shearing bolts on plows and bush hogs is common, so I'd vote grade 5.

  7. #7
    Platinum Member catdozer's Avatar
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    Indiana
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    Bobcat CT235

    Default

    What i have done also is if a grade 2 is to soft, get a grade 5 one size smaller.
    Bobcat CT235 with Deere Imatch, And a very bad addiction of attachments

  8. #8
    Platinum Member Henri88's Avatar
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    2008 JD 2305

    Default Re: What shear bolt grade would you recommend?

    I'm not to worry about the implement, it is the pto on the tractor that worry's me the most. As mention above, I'm going with grade 2, but I just don't know how frequent a shear bolt will brake under normal (brush cutting) use. Maybe I'm over worrying here, but I was kind of hoping that someone with pretty much the same set-up would chime in. Maybe I should've ask my question on the JD forum since it is not the implement but mostly the tractor that I worry about.

    Arcking, what size is your cutter and tractor? Tx

    Henri
    Henri

    How could you be told I was french?

    Rotary cutter 4' Howse , mid mount mower 54'' , f.e. loader 200CX , tiller RT1150 Frontier , cultivator PC1001 Frontier , middle buster PM1001 Frontier , JD 47'' front snowblower , pallet forks , grass-sweeper , quick hitch Speeco , trailer hitch , cab Jodale-Perry , trailer 16' galvanized Easy-Hauler ,

  9. #9
    New Member
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    Default Re: What shear bolt grade would you recommend?

    Quote Originally Posted by Henri88 View Post
    Arcking, what size is your cutter and tractor? Tx
    I usually break things with a 55hp tractor and 10ft bushog...a little different scale than you're talking. I've never sheared a PTO bolt other than on a round baler though - usually it's the rough ground that shears other bolts. Not saying it isn't rough on the equipment, but if I were to use lower grade bolts I'd never get anything done.

  10. #10
    Platinum Member Henri88's Avatar
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    2008 JD 2305

    Default Re: What shear bolt grade would you recommend?

    Tx Arcking!
    Henri

    How could you be told I was french?

    Rotary cutter 4' Howse , mid mount mower 54'' , f.e. loader 200CX , tiller RT1150 Frontier , cultivator PC1001 Frontier , middle buster PM1001 Frontier , JD 47'' front snowblower , pallet forks , grass-sweeper , quick hitch Speeco , trailer hitch , cab Jodale-Perry , trailer 16' galvanized Easy-Hauler ,

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