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 | ggman
Join Date: Posts: 1 
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2000-12-08 22246
I've got spec's for Kubota, NH, JD, and Cub Cadet. On comparable tractors in the 25-30 hp, why is it that Kubota indicates a lower lift capacity on the 3 pt hitch, whether at hitch point or 24 inches back? Does it really matter.....since 3pt implements are likely way below the capacity range of 1600-2200 lbs anyway? Should I give much consideration to this?
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| Bird Senter
Join Date: Jun 1999 Posts: 962 
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2000-12-08 22247
ggman, I wouldn't give it much consideration. I can't claim to know why the ratings are different, but my experience with a couple of Kubotas has been that the 3-point will pick up a heavy enough load that you may need a counterweight on the front end of some kind. In other words, they'll pick up any implement you could reasonably expect to use on a tractor of that size. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2000-12-09 22258
Hitch capacity is an issue with my 3ph pallet forks, but like Bird, I can't think of many other applications where the lift capacity of most compacts would be challenged. However, I do seem to recall hearing a 600# or 800# rating for some tractor. Some CAT1 mowers and box scrapers are that heavy, so maybe it is something to think about. I think these ratings are as much for safety (and possibly liability) as for structural reasons. A tractor's wheel-base and loader may have as much to do with the rating as the hitch cylinders and casings. It wouldn't be to a manufacture's, or anybody else's, interest to have somebody pile weight on the 3ph, drive up a steep hill, and find themselves doing a backwards wheelie back down. Or, maybe discover that there’s no steering after they drive into the ditch. ....
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 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2000-12-09 22275
I believe that part of it is tractors stability and part of it the tractor design. I've never seen a three point piece that handled well on one make tractor that didn't handle well on another make. I haven't found anything that you can't pickup with the Kubota hitch that the other makes can handle safely. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2000-12-10 22299
Yes, that rings true with me. I suspect 3ph ratings are pretty conservative, so most compacts can deal with any load that is manageable by another. I'd take a guess that hitches are engineered so the system relief valve would limit the size load before structural damage is likely. So, I don't worry too much about the structure as long as the 3ph will raise a load. I don't usually have to use the 3ph with my 3ph pallet forks. However, the forks will lift loads the 3ph won't. If I have any doubt about a load, I check to see if the 3ph will lift it. I may not worry much about 3ph structure, but I do worry about stability. The first thing I do is lift the load off the ground and then turn the steering wheel to see if there's going to be enough steering. I can always put more weight in the FEL if necessary. However, I've had more than 1000# over 5' off the ground. I don't know how much more the forks will lift. With a potential for that much weight in the air anchored by a 3,000# tractor, there's a bunch of stability issues involved. I am careful, but with implements like 3ph forks around, I imagine that manufacturers who low-ball their 3ph capacity specs rest easier. ....
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