Permissable Weight

[EhM8]

This question covers both compacts and utility tractors. If you look at the brochures for any of the brands, they are big on quoting their max. lift capacity; for example the New Holland T5040 has a max lift capacity 4550kg - yay! Sounds great. Scroll further down the page and it gives you the weight of the tractor at 4040kg (UK) and... Max. Permissable Weight of 6500.

What does the max permissable weight relate to? You've got a three point linkage lift capacity of nearly 5 tonnes but if you go over 2 tonne, you are being a bad boy How does this work?

Does max permissable weight relate to static load, tyre load at certain speed, or what?

 

[civesnedfield]

I'm struggling with this very same thing right now. I believe the permissable weight relates directly with the Rated Capacity of the tires on the machine.

I have a Mahindra 4530, if you add up what the lifting capacities of the loader and the 3PH plus the weight of the machine, you will find out that you are about 3,500 to 4,000 pounds over the Rated Capacity of the tires.

 

[MtnViewRanch]

I wonder if the manufactures figure that most people won't be using both ends of the tractor at the same time? Although that would not apply to Mahindra since their commercial shows bails of hay at both ends. Maybe they should at least start offering 10 ply tires. I suppose that it could be a problem if everything was just right. I haven't worried about it and mine is over loaded all the time.

 

[EhM8]

I'm struggling with this very same thing right now. I believe the permissable weight relates directly with the Rated Capacity of the tires on the machine.

I have a Mahindra 4530, if you add up what the lifting capacities of the loader and the 3PH plus the weight of the machine, you will find out that you are about 3,500 to 4,000 pounds over the Rated Capacity of the tires.

With smaller tractors, using a counterbalance seems to solve the stability problems, but then you find that its the tyres that are limiting factor, so I suspect you are right. You can abuse tyres, it's the axles I worry about, but they seem to be pretty sturdy on FWA tractors. I hope that rated lift capacities relate to that as well as hydraulic capacity.

By the way, what are the best profile tyres for loader work - narrow, high profile tyres or the wider profile types?

 

[EhM8]

I wonder if the manufactures figure that most people won't be using both ends of the tractor at the same time? Although that would not apply to Mahindra since their commercial shows bails of hay at both ends. Maybe they should at least start offering 10 ply tires. I suppose that it could be a problem if everything was just right. I haven't worried about it and mine is over loaded all the time.

Rear lift capacity seems enough to put most of them over their permissable weight it seems. Yeah, I am lifting tonne bulk bags with my poor little JX60.