Hydraulic PTO Speed Step Up Gearbox for Tractors, Heavy Duty Cast Iron construction 37kw / 50 Hp of Pump Transfer Power!

This is the big Cast Iron 50Hp (37 kW) unit! Able with the correct sized pump to produce an Oil flow up to 100 Lt/Min @ 2850 psi.
Brand new cast iron P.T.O gearbox is ideal for adding hydraulic power to tractors and landscape equipment not already equipped with hydraulic circuits, or iif additional hydraulic flow for auxiliary is needed or required.

Used to power hydraulic Augers, front-end loaders, mowers, rotary sweepers, Fertilizer spreaders etc.
These gearboxes are used mainly for connecting hydraulic pumps to the power take-offs of agricultural tractors.
It is powerful enough to transfer the hydraulic oil flow load of 100 Lt/min @ 2,850 psi.

Please note the last photo is of the gearbox fitted with a Vivoil Group 3 pump.
This pump is not included in this sale, it is purely to show how this looks once you mount a pump.

These PTO speed increases can be used with either a Group 2 DIN mount pump, or a Group 3 DIN mount pump.

Please See our other listings for a PTO Speed increaser complete with a pump.

This listing is just the speed increase box with a pump shaft spline adapter.
If you supply your own pump, it needs to be CW, clockwise rotation.

Options are the gearboxes connector to your tractor's 6 splines, 1.3/8" PTO, & also the 'Spline' adapter to suit your pump.

To estimate the correct LPM pump use this simple equation.
If running your PTO at ; 540 RPM x 3:1 step up ration = 1,620 RPM .
Then multiply the pump CCs. eg. 39cc x 1,620 = 63,180 cc / 1000 = 63 Lt/Min
Please allow for approx. 20% pump inefficiency, so if after 60 Lt/min step up to 43cc pump,
1620 x 43 = 69 Lt/Min less 20% = 56 Lt/min

The standardized PTO output of 540 Rpm is, in this way, increased x 3:1 to optimum operating speeds for the hydraulic pumps.

This gearbox and pump offer either direct or remote mounting options to the tractor P.T.O to provide independent hydraulic service.

The gearbox itself is rated to provide up to 37 KW or 50 HP to the hydraulic gear pump.

This figure is nothing to do with your engine horsepower, only the power the gearbox is able to transfer to the hydraulic pump

(see chart below) Female or Male shafts are the same prices.

This comes with standard Female 1-3/8" 6 splined shafts generic to most PTO output shafts.

This step-up gearbox has a ratio of 3:1 which means, if your PTO is spinning at 540 RPM, it will step up the speed to 1620 RPM.

The main considerations in choosing the correct size pump: for your application; are the amount of Flow required & the pressure required.

As the need for higher pressure (PSI) is increased, the power required to produce this also pressure rises.

It is easy to pump fluid at a high flow rate if low psi is required, but it takes a lot of HP to pump high flow rates at a high PSI.

OIL; 90W Gearbox OIL; Please use Universal Tractor Transmission Oil. ie. Mobil Fluid 422 (non-foaming agent

Please send us a message for any other inquiries.
Messages will be answered within normal business hours (ie: 8.30 am - 5.00 pm M-F)

Please call (07) 5563 1982 or 1300 1 HOSES or email us at sales@mhfgc.com.au

MM 9/10/2024 abc SEO