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  1. #1
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    B2920 Kubota, GT275 Deere

    Default Land Pride RC1548 4' Rotary Cutter Shear Pin

    I have a Land Pride RC1548 rotoary cutter on a B2920 kubota. It's all brand new and I've never used the rotary cutter. I pulled the shear pin out to see what size/type it was. It looks like a 3-1/2" long 1/2" dia bolt with no head markings. I assume its a grade 2.

    Should I go back to the dealer to get some spares? Or can I just use off the shelf grade 2 bolts as replacements?

    Thanks for any help,
    Howard

  2. #2
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    Howard92,

    Parts and owners manuals are available on line from Land Pride. It looks like it is Grade 2 bolt.

    http://www.landpride.com/ari/attach/...s/312-298p.pdf

    24. 802-264C HHCS 1/2-13X3 1/2 GR2 For shear bolt PTO only (So a standard hardware bolt will work)

    Operator's Manual:
    http://www.landpride.com/ari/attach/...s/312-298m.pdf
    Kubota L3130 HST 4x4, FEL LA723 w/QA, Backhoe BH90, Snow Blower: L2185 72" front mount, 7' back blade, carry all, 48" Pallet Forks w/QA, Sun Shade, Turf tires & Rubber Chains for the winter, Extra forward and rear lighting. BearCat 73454 Wood Chipper. LandPride RCR2672 Rotary Cutter. Approximately 290 hours

  3. #3
    Veteran Member kebo's Avatar
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    Quote Originally Posted by Howard92 View Post
    I have a Land Pride RC1548 rotoary cutter on a B2920 kubota. It's all brand new and I've never used the rotary cutter. I pulled the shear pin out to see what size/type it was. It looks like a 3-1/2" long 1/2" dia bolt with no head markings. I assume its a grade 2.

    Should I go back to the dealer to get some spares? Or can I just use off the shelf grade 2 bolts as replacements?

    Thanks for any help,
    Howard
    Just wanted to say that I think that's a really good mower, I had one when I used to have my JD750. I bought it used and got great service out of it for the few years that I owned. I think the previous poster gave you great information on the shear bolt. Good luck with it!


    Land Pride RC1548 4' Rotary Cutter Shear Pin-john-deere-790-010.jpg
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    2001 John Deere 790 4x4 with Model 70 FEL, 5ft International World Agritech bush hog, 5ft Wallberg BB, 5ft Frontier disc harrow, 5ft King Kutter II Rototiller, 5ft Cultipacker, 5ft Sitrex finish mower, Leinbach PHD with 9" & 12" augers, Leinbach middlebuster, Leinbach #11 Field Cultivator, boom pole, custom 3pt handi-hitch, clamp on bucket forks, Pat's Easy Change.

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  4. #4
    kco
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    Standard bolts are usually grade 5. You'll like have to get grade 2 bolts at a dealer. If you can't find grade 2 machine bolts easily you may be able to use carriage bolts, some of which are often grade 2.

    I had a hard time finding 5/16" grade 2 bolts for my snowblower, even at dealers. My rotary mower uses 1/2" grade 2 bolts which were easier to find at a dealer.

  5. #5
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    Quote Originally Posted by moship View Post
    24. 802-264C HHCS 1/2-13X3 1/2 GR2 For shear bolt PTO only
    Thanks for the info. I have the printed owners manual and had actually found that part and read it. But I didn't know the "GR2" meant grade 2.

    Thanks again for help and schoolin',
    Howard

  6. #6
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    Quote Originally Posted by kebo View Post
    Just wanted to say that I think that's a really good mower, I had one when I used to have my JD750. I bought it used and got great service out of it for the few years that I owned. I think the previous poster gave you great information on the shear bolt. Good luck with it!
    Thanks for the info from your experience. I bought it mainly to mow/clear in the woods; so I wanted something pretty small that I could get through the trees.

    Thanks,
    Howard

  7. #7
    Super Member 94BULLITT's Avatar
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    You should be able to buy grade 2 bolts at Lowes, Tractor Supply or a hardware store. I have seen some shear bolts (mainly in snowblowers) that are 5/16" and the have a groove in cut in them to make them 1/4'', like these here. If it is just a regular bolt a hardware store bolt should work fine.
    Roger

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  8. #8
    Member
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    I had the 60" version, I always used off the shelf unmarked bolts, worked great. Broke LOTS of them!
    13 LS 7010C
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  9. #9
    kco
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    Default Re: Land Pride RC1548 4' Rotary Cutter Shear Pin

    Quote Originally Posted by Keltic View Post
    I had the 60" version, I always used off the shelf unmarked bolts, worked great. Broke LOTS of them!
    Yes, the unmarked bolts are grade 2, 3 dashes = grade 5, and 6 dashes = grade 8. I found it very difficult to find 5/16" grade 2's for my three point snowblower at local farm equipment dealers, big box hardware stores, and local bolt specialty shops. I finally found them online at a wholesaler and through their dealer list got them at the one local farm equipment store I had not checked. Part of the difficulty was the 5/16" size that I gather is relatively uncommon as opposed to say, 1/2".

    My local big box stores such as Rona, Home Depot, Cdn Tire, Home Hardware, mainly sell grade 5 and perhaps some grade 8's. Even the local fastener stores(BC Fasteners, Bolt Supply in Calgary, Acklands) here don't seem to carry grade 2's.

    Here's a table showing shear strengths:

    Bolt_Shear_Strength.pdf

    The 1/2" grade 2 bolt the OP mentioned has a shear strength of 8,717.5 lbs. while a grade 5 bolt's shear strength is 14,136.5 lbs.

    Last year my neighbour "temporarily" used a grade 5, 5/16" bolt in a blower like mine instead of a grade 2. The result was a bent auger after picking up a rock. He is a machinist and was able to fix the auger on his press.

    The main point is to use the size and grade shear bolt the manufacturer specifies.

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