Making a pin/bush pivot. What am I looking for?

[MOG]

Currently designing and buying in bits to make a lifting platform to carry something on the front of an old dumper. Apart from the existing 2 pivot points and the ram end, I need to add several addition pivot points on a parallelogram to keep the platform level. I will be using something like the 25mm OD pin on the current ram through a reinforced clevis. What I need to buy are some weld-on collars with ca. 25-26mm ID and about 10mm thick for the pins to rotate in. Kind of like you get on digger buckets or the pivots on a front end loader. Can you just buy those collars anywhere (cheaply ) Or am I better sourcing some thick wall pipe/tube and just cut segments to suit? Any links to online suppliers out there appreciated. I could probably find them myself if I knew what they were called!

PS they do not have to be 25mm if there is something else more common as a standard out there, though I measured the one on the end of the ram @ 25mm.

Thanks

 

[spanners and hammers]

we get collars of all sizes from our local bearing stockist ,, of the shelf

 

[MOG]

Thanks for the reply. Are they weld on ones? I think I have found what I am after on Ebay. Seems they are called bosses.

https://www.ebay.co.uk/i/1922824071...EdJQktzoDKCR6niLwleS-oWI4FDyRpgRoCW2UQAvD_BwE

 

[spanners and hammers]

yes and you look like you sorted

 

[spanners and hammers]

sounds a interesting project don't forget post pics unless it top secret ?

 

[davieh3350]

Interesting project indeed!

Saw an article in practical farm ideas years ago where someone fitted a tractors loader on to a larger dumper. Always thought it was a cool idea.

 

[organicguy]

Not wishing to hijack but looking for the same to replace the pivot point on a bale squeezer, id 38mm length 100mm but cannot find on net. Any more suppliers?
TIA
OG

 

[Andrew]

Try here

Weld on pin boss (Type1 with grease hole) | Steerforth online

Standard boss mounting to be welded to hydraulic cylinders.

www.steerforth.co.uk

Not wishing to hijack but looking for the same to replace the pivot point on a bale squeezer, id 38mm length 100mm but cannot find on net. Any more suppliers?
TIA
OG

If there is room try and fit a larger OD and ID bush, then fit some of these. The pivots will last a lot longer then. Kramp do a 38mm ID 50mm OD version. Put that in a 50mm bush. It will be a loose fit in the Steerforth bosses (they will be a 50.5mm hole IIRC), the bushes need a H7 tolerance. But a dob of weld will be perfectly OK if needs must......

Steel bush D - KRAMP

Discover Steel bush D at KRAMP. You can find the largest range of Steel bush D products online. It's that easy!

www.kramp.com

 

[jamesy]

Interesting project indeed!

Saw an article in practical farm ideas years ago where someone fitted a tractors loader on to a larger dumper. Always thought it was a cool idea.

That’s a lot of years ago! If it’s the one where most of the feed fences were crash barriers

 

[MOG]

Mine is only a little 2 tonne Benford, but I also had the thought to fit an old Slewtec rear loader onto the front to make a sort of mini-yard loader like the Schaeffer ones. Something like this guy has been working on...

http://jhwengineering.co.uk/loader-update

However, the project I am working on is something completely different. I will take some pics once I have a proof of concept tacked together, to see if it does what I hope it will. I will then start a p[roper thread and be asking for more advice on hydraulic systems no doubt

 

[mar]

Mine is only a little 2 tonne Benford, but I also had the thought to fit an old Slewtec rear loader onto the front to make a sort of mini-yard loader like the Schaeffer ones. Something like this guy has been working on...

http://jhwengineering.co.uk/loader-update

However, the project I am working on is something completely different. I will take some pics once I have a proof of concept tacked together, to see if it does what I hope it will. I will then start a p[roper thread and be asking for more advice on hydraulic systems no doubt

When you say lifting platform do you mean something like the 3 point linkage on the back of a tractor or are you on about something else

 

[MOG]

Something else

 

[MOG]

So I have knocked up a proof of concept out of wood, just to check whether the idea I have is worth pursuing. All looks good so I now need to buy the steel and the pivots and bushings. Then I will start a thread.

 

[Forever Fendt]

So I have knocked up a proof of concept out of wood, just to check whether the idea I have is worth pursuing. All looks good so I now need to buy the steel and the pivots and bushings. Then I will start a thread.

whatever you are putting the bale on with could surely be used to feed the bale out with

 

[Forever Fendt]

Not wishing to hijack but looking for the same to replace the pivot point on a bale squeezer, id 38mm length 100mm but cannot find on net. Any more suppliers?
TIA
OG

I have some machined tube that is I think 60.3 od with a 41.24 internal bore a std bright bar is good fit in it I used it for pivots on 2x bale gripers I can cut some if anyone needs some this size

 

[pettsy]

One built on a 1t dumper in this thread...

Dumper Loader MkII

Some of you that frequented the old CEF forum might remember when I refurbished this old Terex HD1000 high tip and converted it to a loader. [August 2013] This was the first iteration with bolt on arm extensions which made no alteration to the original arm and hydraulics and allowed me to...

www.planttalk.co.uk

 

[Bloders]

remember, 25mm pis is Cat 2 top link,
Lower links are a bit bigger.
Maybe just use some linkage pins, bossess if they are suitable.

 

[MOG]

whatever you are putting the bale on with could surely be used to feed the bale out with

Indeed. It is what I was doing last year. But a 500 kg machine with a bale of silage on it stuck out front on the loader is a lot of strain on my little 75 hp tractor, and the whole rig is about 20 feet long, making it a bit unwieldy in the sheds.

You really need to always be on your guard to avoid hitting a post or a wall. So this is a solution to be a bit more handy, maneuverable and less of a strain on the main tractor. Besides, I enjoy making stuff

 

[Forever Fendt]

Indeed. It is what I was doing last year. But a 500 kg machine with a bale of silage on it stuck out front on the loader is a lot of strain on my little 75 hp tractor, and the whole rig is about 20 feet long, making it a bit unwieldy in the sheds.so the bale spreader is going on the dumper then ?

View attachment 847640

You really need to always be on your guard to avoid hitting a post or a wall. So this is a solution to be a bit more handy, maneuverable and less of a strain on the main tractor. Besides, I enjoy making stuff

 

[Andrew]

remember, 25mm pis is Cat 2 top link,
Lower links are a bit bigger.
Maybe just use some linkage pins, bossess if they are suitable.

Be careful, Cat 2 pins are 25.4