I havent posted in this thread in a while. Ive been hibernating most of the winter, but I now have a new project on the farm.
The problem, I have a 2011 John Deere 410J backhoe and need attachments. This backhoe has the quick change bucket on the front that John Deere calls "Worksite Pro". Well finding anything that adapts to this is hard enough, finding any attachments that I can afford is another story.
I have found sets of forks for $4k and up, used, and that is more than I can justify. On top of that, if i want to use any other attachment, like a post hole digger, or hay spear, I will have to pay thousands for each of those attachments as well.
So I decided, im going to make a Worksite Pro to SSQA (skid steer quick attach) adapter. Here was my inspiration. Yeah look at that price.

I'm going with a design similar but heavier everywhere I can. The one pictured is rated for 7,500 lbs so mine should be plenty strong enough for what I am doing.
Yes I know the backhoe is way oversized for skid steer attachments, but I only use this around the farm, so it isnt going to get full time use, and skid steer attachments are cheap and easy to come by. Also, my dad lives next door and has a wide variety of attachments I can borrow.
First, I had to figure out how to make the plates that fit my backhoe. I found some that were close to the same pattern online for $950 and up but out of stock and not exactly what I needed, and would need modified. I also found a few drawings for adapters that were close and had a machine shop I use for work take that drawing and convert it to a .dxf file. After reviewing it and making a few changes and measuring about 30 times, I pulled the trigger on having them laser cut. Oh, did i mention the plates are 1" thick? The price they quoted me was around $300 for each plate.
However, the shop had some 1" scrap and wanted to dial in their laser, and since labor was low, and the owner is awesome, he gave them to me for free!

Each plate is roughly 3 feet long and 2 feet wide, and HEAVY. But I wanted to match what the bucket on my backhoe already uses, and the adapters Ive seen online also use 1" thick steel, so thats what I went with. They fit great!

Anyway, I did some digging online and found some ssqa latch boxes from Bell Precision. I upgraded to the heavy duty boxes and they weren't lying, these things are 3/8" thick and weigh a ton. They are rated for 7,500 lbs.
I was originally planning on just using my dad's forks, but since I saved the cost of the plates, I used those funds to buy a set of forks.
So I ordered a fork attachment with 60" forks. This attachment also doubles as a hay spear, which I have been needing and is rated for 4,000 lbs. Which is probably heavier than anything I will need to lift anytime soon.
The crazy part is, the forklift was delivered FedEx, and the bracket by itself weighs 148 lbs. The forks are double that and will be arriving by FedEx tomorrow. The driver will probably be pretty upset with me after that.
And here are the latch boxes in the fork lift attachment on my weld table. I will be welding 2x2x1/4"" square tubing between boxes once I get the spacing set just right (latch box manufacturer suggested 1/8" wall tubing, but you could upgrade to 3/16". I decided to go bigger still. Those tubes will then be welded to the large plates on my backhoe. Of course that seems a little weak to me, so I will be adding braces/gussets/and crossmembwrs where needed to add some strength.
After unloading all this stuff, and test fitting and moving them around the garage, I called it a night. I will probably get back on it tomorrow. Stay tuned.