Here's the drawing from the official spec. SAE J2513. I think the slots for the pins has varied some in the past.I'm hoping someone can help with some dimensions. My plan is to fabricate a standard SSQA attachment receiver for the front of the loader. I've seen a few drawings that show widths clearly enough, but I'm struggling to find anything that isn't too blurry to read that would give dimensions 'A' and 'B' shown on my attached sketch of a section view of an attachment plate.
Can anyone point to a readable drawing ?
Many thanks, and apologies if it's right in front of me and I can't see it. Apparently it's a special skill of mine
Front loader for a B7200
- Thread starter Paul Allwood
- Start date
Thanks for the info and the pics Chim - it's appreciated.I have three that I measured this morning. Dimension "A" is 16" and Dimension "B" is 1-1/2".
For the first project that required a plate (snow plow) the first plate had to be returned because it was just a bit short in the "A" dimension and the tabs on the Kubota's loader were longer than that. When the top of the plate was hooked on the Kubota, the bottom was held away by the bottom tabs of the plate and the round pins couldn't engage. The manufacturer (I think it was Titan, but sold through a third party) paid the shipping.
Also, the square holes in the bottom are cut square with the material, rather than parallel with the plate so that the flat part of the round pin
makes full contact.
One is a 3/8" thick plate and another is a square tube frame - both already made up that I purchased. The third is a square tube frame I made for a recent project.
Pics below are from the (purchased) snow plow plate. The 16" is with the end of my folding rule jammed into the upper bend. Sorry for the out-of-focus shot
Excellent, thanks. I had found a version of this drawing but it was so blurry that I couldn't read any of it.
I've found a couple of references that suggest the wedge pin diameter is typically 1.25". Does this sound right, or since it's dimension isn't included in the drawing, does that mean it can vary ?
TheOldHokie
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Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
As TheOldHokie said, the drawing is minimal. The slot is 2" wide, so a 1-1/4 pin would give + or - 3/8" on engagement. My implements all have a wider slot, I think, or I'm a better driver than I thought
.
Comparing the round pin diameter to the dimensions of the slot can be a little deceiving. The pin (I can measure it but think its around an inch) is sliced at an angle and when mine are fully engaged, the flat part of the angled cut is about half way through the bottom slot. The round side, opposite the flat, stands away from that side of the slot. Hope that makes sense.
Here are a few more pictures showing the engagement on the factory bucket The round pin measures 1-1/4"Ø (at least on my "Merican" tape measure, although it could be a metric part). The pins engage about half of the flat.
The one picture shows how the hole in the bucket being cut square with the material of the bucket's bottom flange mates with the angle flat of the pin. The pins have fairly heavy springs that get compressed when the levers are down. The mating angles and spring tension keep the bucket firmly attached. I wiggle the joystick between curl and dump a few times to ensure the pins are fully seated.
The one picture shows how the hole in the bucket being cut square with the material of the bucket's bottom flange mates with the angle flat of the pin. The pins have fairly heavy springs that get compressed when the levers are down. The mating angles and spring tension keep the bucket firmly attached. I wiggle the joystick between curl and dump a few times to ensure the pins are fully seated.
Attachments
1 step back, then a couple of steps forwards.
The bush I had welded into the bottom end of the right side loader arm was out of line with the one on the other side by about an inch over the 800 mm width - too much. I spent about an hour cutting out the crooked bush with a holesaw, made a new bush and welded it in straight. With the benefit of 20-20 hindsight I would have welded the frame first, then aligned the bushes either side with a long piece of suitable round bar, then welded the bushes in properly aligned.
Next I tack welded some brackets and bushes that I made yesterday to start on the SSQA set up that I'm making. This moves nicely - wouldn't have worked with the mis-aligned bush. Perfect ? Don't know yet.
The bush I had welded into the bottom end of the right side loader arm was out of line with the one on the other side by about an inch over the 800 mm width - too much. I spent about an hour cutting out the crooked bush with a holesaw, made a new bush and welded it in straight. With the benefit of 20-20 hindsight I would have welded the frame first, then aligned the bushes either side with a long piece of suitable round bar, then welded the bushes in properly aligned.
Next I tack welded some brackets and bushes that I made yesterday to start on the SSQA set up that I'm making. This moves nicely - wouldn't have worked with the mis-aligned bush. Perfect ? Don't know yet.
Attachments
I tried to convert a video to a GIF of the beginnings of the SSQA bits moving between curl and dump. The response to the first effort was "can't use this format, needs to be a GIF". The response to this effort with the GIF was "for is too large".
Where can I find guidelines covering posting videos ?
Where can I find guidelines covering posting videos ?
Can't say that I've seen any directly-posted videos. A common method of sharing videos is to post them on YouTube and link them. I don't do much of that but here's one of mine from a few years ago:
Shows it is a "private" video. You'll need to make it "public".
I think I'm going to need to slightly adjust the location of the centre bracket holes for the end of the dump cylinder to slightly increase the range of motion of the bucket. It doesn't need to move much (probably somewhere between 5-10 mm) to get a useful increase.
When working out hole locations I mocked up some of the bits out of plywood. This was a bit flexible and allowed pivot points to move beyond the point where the cylinder could pull everything back, so I was maybe a bit too conservative with hole placements, therefore overly restricting bucket range of motion. Much more rigid in steel with proper pins and bushes, so I think I can safely get a little more out of it.
Out of interest, does anyone know the range of motion of your bucket from full curl to full dump ?
When working out hole locations I mocked up some of the bits out of plywood. This was a bit flexible and allowed pivot points to move beyond the point where the cylinder could pull everything back, so I was maybe a bit too conservative with hole placements, therefore overly restricting bucket range of motion. Much more rigid in steel with proper pins and bushes, so I think I can safely get a little more out of it.
Out of interest, does anyone know the range of motion of your bucket from full curl to full dump ?
The videos works for me now
I'll check the range of motion on mine and get back to you. It appears yours currently moves slightly in excess of 90°, which would be somewhat less than mine. Fully curled I can toss tools and things in it when it is lowered and they don't fall out. It dumps so the bottom of the bucket goes beyond perpendicular to the ground.
I'll check the range of motion on mine and get back to you. It appears yours currently moves slightly in excess of 90°, which would be somewhat less than mine. Fully curled I can toss tools and things in it when it is lowered and they don't fall out. It dumps so the bottom of the bucket goes beyond perpendicular to the ground.