Worlds Strongest Kubota Bucket, Custom Toothbar

   / Worlds Strongest Kubota Bucket, Custom Toothbar #1  

mike69440

Elite Member
Joined
Jun 2, 2005
Messages
3,362
Location
Central NH (God's Country)
Tractor
2005 L39 Kubota, 2020 Polaris 570 Sportsman, 2006 RTV 900, 2019 RTV1100C, 1997 Komatsu PC75UU2E w/ Thumb & Blade, 2013 Mahindra Max28XL Shuttle plus many attachments
That's my story and I'm sticking to it. (Until someone shows me one that is beefier.)

I've done a lot of digging with out a tooth bar, having over 1600 Hours on my L39. I beat the heck out of the poor machine driving into hard piles of rocky dirt and worse. (Snow plowing with a bucket is not good) I hope a toothbar along with a real plow will make it easier on her in her middle age.

When I first bought the L39TLB I had the bucket edges welded up with an additional 5/16" thick by 2-1/2" wide steel strips over the 5mm thick stuff Kubota uses on their HD round top bucket.
I also had welded to the bottom backside of the bucket a 2" x 2" x 3/8" angle with a 2" wide x 1/2" flat stock scraper bolted to the angle as a renewable wear strip for back dragging plus 3 lifting hooks plus a pulling ring. With my custom toothbar I also had welded a 1" wide x 1/2" thick flatstock strip to the tube running across the top of the loader. I've dropped a few large rocks into the bucket and the tube had a light bend and some dents.

For the toothbar I used my old cutting edge that at 1400 hours I had reversed to use the second edge. For teeth I went with (Qty 7) ESCO Super V 1610TV13 weld on adapters without centers, ESCO V13SLY SV Standard point Teeth and V-13-V17 SV pins. They were expensive at a bit over $40 for each set. The ESCO SV system is an excellent tooth retention system. I wish I had them on my excavator bucket instead of CAT style adapters

ESCO V13SLY is their smallest size will work with the L39-L45-M59 etc.
Texas Contractors Equipment - Ground Engaging Tool Specialists for the Construction and Crushing Markets
I also found this great resource on bucket teeth info.
http://www.plasterer.com/media/walka... Catalog.pdf

I cut back the adapters to clear the bucket cutting edge and one of the plow bolts. As can be seen looking at the tie die painted bucket photos, it seems to be a very sturdy arrangement. I will buy some orange paint!

My cost was the teeth, a new cutting edge so I have a flat straight edge for general work, have them welded, and consumables, about $750.

On another related subject:

With the hours on my machine, I have uncovered some weak points on Kubota loaders with the 4 link loaders.
The bucket 4 bar linkages and pins simple do not have enough bearing area and have no sealing barrier against dirt entering the joint.

The pins and bushing through the loader arms are replaceable, but the outer links are not bushed and must be completely replaced to restore tight joints to the loader, an expensive proposition.
The frame pivot points and the joints at the end of the hydraulic cylinders are adequate as the are not right in the dirt engaging area. All bucket joints should be better protected and have more load bearing area (Larger Pins, wider bearing surface, dirt exclusion seals, etc. like a REAL commercial machine that has extended greasing intervals.)

About the only way to extend the life of the joints at the bucket is grease every 2-3 hours of use. The other joints on the loader seem to hold the grease better and can go the Kubota recommended 10 hours or more for a greasing interval.
 

Attachments

  • P1010663.jpg
    P1010663.jpg
    446.1 KB · Views: 1,286
  • P1010665.JPG
    P1010665.JPG
    897.3 KB · Views: 900
  • P1010669.JPG
    P1010669.JPG
    939.8 KB · Views: 814
  • P1010670.jpg
    P1010670.jpg
    461 KB · Views: 864
  • P1010672.JPG
    P1010672.JPG
    986.4 KB · Views: 812
  • P1010674.JPG
    P1010674.JPG
    839.6 KB · Views: 915
  • P1010661.jpg
    P1010661.jpg
    444.4 KB · Views: 929
Last edited:
   / Worlds Strongest Kubota Bucket, Custom Toothbar #2  
very Nice work!

I plan to do something similar with the L3800 bucket at some point.
 
   / Worlds Strongest Kubota Bucket, Custom Toothbar #3  
I really wish I knew how to weld, especially with a welder sitting in my shop. good job
 
   / Worlds Strongest Kubota Bucket, Custom Toothbar
  • Thread Starter
#4  
I really wish I knew how to weld, especially with a welder sitting in my shop. good job

Don't feel bad. I will never post close ups the welds on my custom $500 8' Fisher Commercial Plow I converted for use with my tractor.
 

Attachments

  • P1010183.jpg
    P1010183.jpg
    772.7 KB · Views: 699
  • P1010186.jpg
    P1010186.jpg
    727.8 KB · Views: 607
   / Worlds Strongest Kubota Bucket, Custom Toothbar #6  
Looks awesome!!:thumbsup:
 
   / Worlds Strongest Kubota Bucket, Custom Toothbar #7  
Looks like you defiantly did a great job on your bucket. :thumbsup: Keep up the good work! :thumbsup:
 
   / Worlds Strongest Kubota Bucket, Custom Toothbar #8  
Good job Mike.

Let us know how it digs when you get the L39 back in operation.

Regards,

Lauren
 
   / Worlds Strongest Kubota Bucket, Custom Toothbar #9  
Nice job,but always remember: "You are as strong as your weakest link" I have always remembered this building motorcycle engines, seems as if as soon as you forget it, you'll be reminded in a monetary manner.
 
   / Worlds Strongest Kubota Bucket, Custom Toothbar
  • Thread Starter
#10  
Are those weld on shanks special in some way... they look upside down from what I am use to seeing... ? KennyV


I needed a bottom leg adapter to work with the removeable cutting edge. I had to trim the top leg back a bit also. See attached.
 

Attachments

  • esv05_lg[1].jpg
    esv05_lg[1].jpg
    172.2 KB · Views: 539
   / Worlds Strongest Kubota Bucket, Custom Toothbar
  • Thread Starter
#11  
Re: Worlds Strongest Kubota Bucket, Custom Toothbar, maybe not.

Well, I got my Kubota back sort of repaired after the fire and went out to tackle moving the piles of spoils I dug with the excavator.

I was working the L39 near the spot where I threw a track on the excavator, not exactly smooth as my smart wife ordered me not to even think of driving the RTV 900 there.

It was an uncomfortable, wild ride on the L39, so I decided I'd first smooth things out a bit before I break the front axle.

There is this piece of rock or broken ledge sticking out of the ground so I figure I'm too lazy to get off the L39 and hop on the excavator parked 30' away and what the heck these new teeth should pop that rock right out.

Pop it did but it was the tooth adapter on the bucket. I was surprised I could generate that much force with the L39. At least the rock came out.

So I get another adapter and bring it back to be welded and also have extra weld deposited on the rest of the adapters.

So what happens next? I snap the cutting edge.

Back to the welder. We do a double anneal on the toothbar and reweld with PWHT. I then grind the entire weld smooth.

The good news I went all day today without a problem.

I think I will try to be a little easier on the teeth and should not have a problem. I suspect I would have completely torn off a standard bolt-on tooth bar.

With the tooth bar I can take a good bite out of a pile.

PS I used the excavator to load this rock in the bucket, as I could never get it in the bucket otherwise. Estimated weight is over 2200 lbs. Don't try this without additional weights in rear! Also, note missing tooth.
 

Attachments

  • P1010716.jpg
    P1010716.jpg
    833.4 KB · Views: 1,450
  • P1010717.jpg
    P1010717.jpg
    820.7 KB · Views: 584
   / Worlds Strongest Kubota Bucket, Custom Toothbar
  • Thread Starter
#12  
Re: Custom Toothbar. Maxed out loader capacity

I move these rock about 500'. The carry was scary, as even on a gentle side slope, or going down a little grade, the rear end lifted and the bucket scraped the ground. That did not create too much of a tipping danger, as I really could barely get the bucket 4-8" off ground. As I have a 125 lb thumb and 750 lbs of wheel weights, even with stronger hydarlics, the tractor's axles could not handle a heavier load.

I estimate there is at least 20-22 cubic feet of rock and the two rocks weigh about 2,600 lbs or so, based on about 125 lbs /ft^3
 

Attachments

  • P1010718.jpg
    P1010718.jpg
    665 KB · Views: 486
  • P1010720.jpg
    P1010720.jpg
    672.8 KB · Views: 342
   / Worlds Strongest Kubota Bucket, Custom Toothbar #13  
Hi Mike

That definitely looks like a full load. It's a good thing you have those shiny new teeth on or I don't think that bottom rock would even stay in the bucket. When I collected all the rocks for my latest wall project there were a number that were above ground in the pile. I was able to get them on the forks and curl back with the L45 but not really lift them. I had to hurry to my trailer and get them loaded before the hydraulics leaked down to the point I couldn't get them in. I'm glad that although all the bugs in the L39 haven't been worked out yet at least you're back in business!

Regards,

Lauren
 

Marketplace Items

2004 JOHN DEERE 160C LC EXCAVATOR (A52709)
2004 JOHN DEERE...
2019 PJ TRAILER 32FT GOOSENECK (A58214)
2019 PJ TRAILER...
Unused 2025 CFG Industrial MX12RX Mini Excavator (A59228)
Unused 2025 CFG...
2023 Kubota L6060HST Compact Utility Tractor (A61307)
2023 Kubota...
2016 Doyle 10T Tender (A56435)
2016 Doyle 10T...
2007 Ford F-250 4x4 Crew Cab 7ft. Flatbed Truck (A59230)
2007 Ford F-250...
 
Top