Hello, I am new to OTT, if I am doing something wrong please let me know. I have a 2023 Kubota B2301 with a LA435 loader. I want to install a Hydraulic Post Hole Digger and 3rd function valve to run it of course. Any manufactures and types of kits would be appreciated.
Recommendations wanted for a Hydraulic Post Hole Digger
- Thread starter Lockwood Valley
- Start date
Old Machinist
Well-known member
Equipment
Kubota LX3310 cab, JD 4310, NH 575E cab backhoe, JD F725, Swisher 60", etc.
If you can fabricate they sell units designed for Chinese mini excavators on eBay for under $500. I bought a 8 inch unit not long ago for $348 shipped. I didn't really need it and flipped it for $500 instead of rigging it to the tractor.
Those units run with two hoses. I think the LP unit has to have a third hose for return. Not sure why or if it would have problems just using a two hose setup.
I recently adapted one of the sickle bar mowers and it seems to work fine on my two connection third function. I don't run it continuously though.
Those units run with two hoses. I think the LP unit has to have a third hose for return. Not sure why or if it would have problems just using a two hose setup.
I recently adapted one of the sickle bar mowers and it seems to work fine on my two connection third function. I don't run it continuously though.
dirtydeed
Well-known member
Lifetime Member
Equipment
B2650 BH77, U27-4R2, BX23TLBM, box blade, rear blade, flail mower, Stump Grinder
Did the same here with Chinesium unit. Got 3 augers for it for a very good price. The mount for the mini (quick mount ears and welding) cost me more than the auger drive and augers. It works great though.
The third hose is a case drain for the motor. If LP says its needed better heed that advice.
Dan
Dan
Last edited:
jyoutz
Well-known member
Premium Member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
Take a look at the hydraulic flow requirements of the unit and what your tractor is capable of before moving forward.
I have a Land Pride HD25 that I bought used for $1,750 and it came with virtually new 9" and 12" augers. The hydraulic flow rate needs to be in the 5-12 gpm range which is just about perfect for the MX or M which are at the upper end of that range. I ended up buying a 6" rock auger which proved to be a game-changer given the rocky ground I live on. I did use it on the MX but it runs so much better on the M with the higher flow rate and greater weight of the loader. Not sure what the third hose comment is about. Mine has two hoses and runs off the 3rd function.
Land Pride
www.landpride.com
Kubota Matched feature on Land Pride's website shows that the HD25 is matched to everything from the BX to the M tractors, but as @dirtydeed and @Old Machinist said, you can buy a lot cheaper models. I'm not sure what your ground is like, but making holes in dirt is a very low bar. Step up to rocks and bedrock and the bar gets a lot higher.
Old Machinist
Well-known member
Equipment
Kubota LX3310 cab, JD 4310, NH 575E cab backhoe, JD F725, Swisher 60", etc.
I'm sorry I was thinking about the Lane Shark cutter that requires a WR Long C-Flow component OR return direct to sump.
The Land Pride auger looks like it runs on two hoses.
nbryan
Well-known member
Equipment
B2650 BH77 LA534 54" ssqa Forks B2782B BB1560 Woods M5-4 MaxxHaul 50039
Your post got me looking for one for my B2650HSD, and looks like the SA20 model hydraulic diggers have options for Quick Attach loader mount units, with hoses that connect to the loader bucket valve outlets.
I.e. no need for a 3rd function and much greater height adjustment ability than 3-point.
What's your tractor's hydraulic gpm rating? The low flow unit option is 6-15gpm rated. My tractor is 8.5gpm, I think.
Old Machinist
Well-known member
Equipment
Kubota LX3310 cab, JD 4310, NH 575E cab backhoe, JD F725, Swisher 60", etc.
Just a word on flow ratings and "requirements". A tractor with lower than specified flow will still work within reason. It will just operate a little slower. Speed isn't a big deal on a post hole digger.
The hydraulic motor on my sickle bar mower was rated for 8 to 15 GPM. It runs fine on my 5 GPM tractor.
The hydraulic motor on my sickle bar mower was rated for 8 to 15 GPM. It runs fine on my 5 GPM tractor.
Not sure how well it'd work running a PHD off the loader controls. Are you suggesting using the bucket tilt (SSQA plate tilt) to run the PHD? I use the loader controls to adjust loader height and PHD angle as I'm drilling a hole so running the PHD off the 3rd function is essential to me.
Oil flow rate is directly related to the torque that can be applied to the auger so I'll respectfully disagree. I've noticed a significant difference running the HD25 on the M compared to the MX, which I attribute to available hydraulic oil flow rate. But whether or not the difference is significant will depend on the type of ground that you're trying to put a hole in.
nbryan
Well-known member
Equipment
B2650 BH77 LA534 54" ssqa Forks B2782B BB1560 Woods M5-4 MaxxHaul 50039
I beg to differ on the "essential" part, as my experience, with pto driven hole diggers anyway, is the tractor's movement front/back adjusts the digger's vertical alignment. All that's needed for up/down motion with the loader boom, and a small adjustment with the tractor front/back position for vertical adjustments.
So with my boom control for up and down, the ssqa dump/curl should be available for the digger to hook up to?
Any others out there using a loader mounted digger? What's the digger's feed from for power?
I've never used a PTO PHD that mounts on the 3-point. My experience has only been with a SSQA PHD and I would not want to run it any other way than off the 3rd function.
Old Machinist
Well-known member
Equipment
Kubota LX3310 cab, JD 4310, NH 575E cab backhoe, JD F725, Swisher 60", etc.
I didn't say it would work the SAME AS. I said it would work within reason.
Does your two machines operate at the same pressures? Torque can be increased or decreased by flow and or pressure differences.
Good question and I don't know. The M has more hydraulic flow, but also, the flow rate doesn't experience the same parasitic loss that the MX sees since it's a gear drive and not an HST. I've wanted to dig into the WSMs for both to see if I can figure out what the actual flow rate at the 3rd function is for both.
Excellent point! I'm not sure what the pressure is at the third function on either tractor. The spec sheets only list hydraulic oil flow rates and not pressure.
The pressure is what the auger requires to turn with the flow rate controlled by the valve (simplified). The maximum pressure (I believe) is limited somewhere. You should find that figure in the work shop manual.