Reversing gearbox

[ED.D]

Any suggestions where I might find a parallel shaft gearbox with 1000rpm in/ 1000rpm out and able to handle 200hp?

Want to reverse the pto shaft on a tractor rather than spin gearboxes on machines.

Thanks.

 

[Smiffy101]

Any suggestions where I might find a parallel shaft gearbox with 1000rpm in/ 1000rpm out and able to handle 200hp?

Want to reverse the pto shaft on a tractor rather than spin gearboxes on machines.

Thanks.

Dont know who makes them but could speak to atkinson vos as unimogs require a reversing box on the front to run normal equipment

 

[Blue.]

Dont know who makes them but could speak to atkinson vos as unimogs require a reversing box on the front to run normal equipment

Don't they drop it to 540 though?

 

[ED.D]

Dont know who makes them but could speak to atkinson vos as unimogs require a reversing box on the front to run normal equipment

Got a call out to them but not had anything back yet.

 

[Dave W]

Got a couple of new heavy duty T gearboxes if they’re any good. Will reverse drive and take 200hp. Splined shaft though.

 

[Pheasant Surprise]

Hmmm parallel shaft...thinking maybe something like a transfer box, but it would have to be a reverse drive type box (no idler gear running between input and output). Most aren’t reverse drive though and the ones that are look hand made, billet housing mega-££££ jobs for customised off-roaders. So out of the question.

There were some PTO reverser units for sale in the states for fitting to grey import utility tractors that have their PTO spinning the wrong way, but they’re too weedy and wouldn’t stand the HP.

I think T-drive gearbox as Dave suggests will probably be easiest/cheapest otherwise but won’t be parallel shaft though obviously.

 

[Pluggyp]

Look at Kramp website gearbox pages there's dozens to look at

 

[Pheasant Surprise]

Look at Kramp website gearbox pages there's dozens to look at

That’s a very good shout. There’s a couple of Comer MR-90 boxes in there that the OP may want to investigate. Not sure of the power rating, but appear to be of the very parallel shaft type and reverse output:

https://www.kramp.com/shop-gb/en/365158/499934/0/Comer+gearboxes+MR-90+1:1

https://www.kramp.com/shop-gb/en/365158/499934/157324/090051+Gearbox+MR-90+1:1

 

[Pheasant Surprise]

Mmmmm looks like those MR-90 boxes are only rated for 85 HP @ 540 rpm...could be worth a go, but box lifetime will be reduced no doubt pumping 200 HP through there. Might get a bit warm too!

http://www.comerindustries.com/mediaObject/prodotti/pdf/gearboxes/mr-90/original/mr-90.pdf

 

[Pheasant Surprise]

The only other parallel input/output box I can think of that could stand that much sustained power would be something like a front PTO gearbox. Maybe find a used one?

Beyond cost, the trouble is they will be reduction geared, probably 1.9:1 and I think OP wants simply 1:1.

 

[Speedstar]

Any suggestions where I might find a parallel shaft gearbox with 1000rpm in/ 1000rpm out and able to handle 200hp?

Want to reverse the pto shaft on a tractor rather than spin gearboxes on machines.

Thanks.

Front P.T.O Gearbox off a JCB 3220 will do this

 

[Pheasant Surprise]

Front P.T.O Gearbox off a JCB 3220 will do this

Wouldn't that have a reduction in it, or are they 1:1 in and out?

 

[Speedstar]

Would work at 540, 1000, left & right rotation

 

[Maico490]

Torque will be nearly halved at 1000rpm
1000/540=1.851
Multiply by the 85hp rating
1.851x85=160hp

Not 200hp but a lot closer.
Will it actually be putting 200hp through all the time or is it to go on a 200hp tractor?