Posted by paul on November 23, 2020 at 15:36:25 from (76.77.197.114):
In Reply to: 3 point hitch pins posted by OregonAaron on November 23, 2020 at 15:19:26:
Cat 1 is up around 50+ hp.
Cat 2 is 60-120 or so hp.
Cat 3 is the big tractors, and then when the super big tractors came I think thry went to cat 4 even?
Each one has bigger pins, is wider between pins.
Except, then they came up with the Narrow, or N, sized. So a cat 3N has big pins like a cat 3, but they are spaced as wide as a cat 2. So you can start using the same quick hitch with adaptors on different equipment.
If this sounds confusing, it is. There are about 6 different common possibilities.
Anyhow, if you have a cat 1 blade and you put it behind a cat 2 tractor, they make little sleeves, short pipes, you can put on your pins and work with the cat 2 tractor. Or you can buy bigger pins, but then you have to find the type with the smaller threaded side to fit the holes in your blade...... some folk just let the little pins rattle around in the bigger holes on the tractor arms.....
Your tractor likely has some sway chains or metal blocks or a bar with pins on each side that can be set differently for the narrower cat 1 width of your blade.
Now using a cat 1 blade with a cat 2 tractor is likely to greatly shorten the life of the blade, since it was designed for lower hp use, and now you can pour the wood to it and really scoop a load with it, more power as Tim Allen would say. With similar end results.
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