young&keen
Member
Help needed, wanting to convert are pto driven cement mixer to go onto loadall.can anyone point me in the right direction for the right motor? Been told that loadall will put out 30lpm at tick over? Help anyone
Cement mixer pto to hydraulic drive
- Thread starter young&keen
- Start date
Pan mixer or Teagle?
young&keen
Member
Like a Teagle but not a Teagle!
Pheasant Surprise
Member
- Location
- Woodbridge, Suffolk
You want a gerotor type hydraulic drive (high torque / low rpm) together with a reduction box to get the desired torque output and RPM.
Doubtless @Mr Happy could sort you a motor
So what box is on there at the moment from the PTO drive?
young&keen
Member
At the moment it’s pto onto a cog then spinning drum on a chain I was hoping to swap pto shaft for a motor?
The teagle one is just a motor instead of the pto,just need the cc of the motor,the higher the number the slower the motor.
young&keen
Member
Is there different torque of motors though?
Yes,but as far as I’m aware they use a standard danfoss type similar to ones on a feeder conveyor but slower.
My pan mixer and tanker vac pump both use gereotor type motors with pto spline outputs.
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https://www.hydrokit.com/en/produit...autocomplete=Omr&pnvrandom=0.2878023404666339
Pheasant Surprise
Member
- Location
- Woodbridge, Suffolk
Sure. So you need to work it back to the rpm (and power) needed at the hydraulic motor.
Typically a cement mixer is going to be spinning about 30 rpm or so - the tractor PTO won’t be running at its standard revs of 540 rpm, more or less half that, so say around 270 rpm.
So without checking what ratio you’ve got there on the cog and chain setup, I’d reckon it to be about a 9:1 reduction setup.
So straight swap let’s say for a Danfoss OMP class gerotor type motor with approx. 270 rpm needed. Probably want about 15-20 HP of power to drive the drum. Maybe bit more or less. Dunno. Let’s say ballpark around 15 kW of power from the motor.
A very rough calculation that needs around 52 litres / min flow. If you’ve got less flow, then you’ll have proportionally less power available at the motor. So you may need to change the cog on the motor if the flow isn’t there and it struggles.
Alternatively you put a slightly bigger displacement motor in there to get more torque but on the same cog/gearing ratio it may spin the drum a bit more slowly.
Hope that all makes sense.
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fermerboy
Member
- Location
- Banffshire
We converted our old and I mean really old Teagle cement mixer to hydraulic drive so it would go on the front of the loadall.
Our one has a sort of sproket on the barrel and the input shaft has a ring of small rollers that act as another sprocket to drive it. I'd guess at about 8 to 1 reduction maybe.
We had a motor from a feed mixer conveyor so used that. Its got plenty of power and far too much speed, you just need a little bit of the 3rd service to make it run at the right speed. Dont know the size of it , but will look for a plate tomorrow if you want.
My whole conversion was done with junk lying about, the only new bit was a rubber doughnut to connect the motor to the shaft, allows a bit of misalignment.
Our one has a sort of sproket on the barrel and the input shaft has a ring of small rollers that act as another sprocket to drive it. I'd guess at about 8 to 1 reduction maybe.
We had a motor from a feed mixer conveyor so used that. Its got plenty of power and far too much speed, you just need a little bit of the 3rd service to make it run at the right speed. Dont know the size of it , but will look for a plate tomorrow if you want.
My whole conversion was done with junk lying about, the only new bit was a rubber doughnut to connect the motor to the shaft, allows a bit of misalignment.
Shovelhands
Member
- Location
- Sunny Essex
Unfortunately @Mr Happy is having some technical issues with his account currently
, not his fault, so he’s not ignoring anyone 
Pheasant Surprise
Member
- Location
- Woodbridge, Suffolk
Can you blokes confirm the gerotor motor size on your conversions and/or take a clear photo of the nameplate on the motor.
If the OP needs to source one similar it would be helpful.
Sorry can’t help,the plate is unreadable.
It is of a proper rapid filling auger.
It is of a proper rapid filling auger.
Lazy Sod
Member
- Location
- Warminster Wiltshire
Back in the day, the Taskers Fertispread was considered to be the bees knees of spreaders. It had a land driven fertilizer feed and an hydraulic motor driven spinner. There was a valve fitted between the flow and return pipes which you could adjust to vary the speed of the motor. I never took one apart but imagine that it was a needle valve type of tap.
fermerboy
Member
- Location
- Banffshire
Just been and looked at mine but the plate is unreadable, and the sister motor still on the shelf is missing the plate. Silage and riveted on alloy plates dont mix well.
My motor came off a RMH mixer for operating the cross conveyor at rhe front, the spare one was for the elevator off the same machine.
Checked the mixer and its a 6 to 1 reduction from rhe input shaft to the barrel, and we used to have the Ford tractor at tickover on rhe 540 shaft and it could have done with a fracrion slower than that. I would hazard a guess at about 200rpm for our one would be about right.
We have it on a 526-56 loadall and it only needs a little bit of 3rd service flow to work it. Ours is manual levers and dad has a little adjustable prop to hold the lever patrially open the right amount.
Its got more than enough power to drive the mixer.
Sorry not to be more help, dont know much about hyd motors, and we took a punt with what we had lying about.
Fordson1
Member
- Location
- Wexford, Ireland
We've a Teagle hydraulic version and it works well. It's the bigger size. It's a bit prone to build up inside at the back, and behind the flights, and not the easiest to clean, but that's nothing to do with the motor. So your idea of converting your mixer is sound. I can look at the motor and do some teeth counting if it helps.
This discussion is really interesting though. I've often thought it would be nice to have a hydraulic driven post hole borer. They are too dear new for the use we'd have but some of the recommendations here for where to get hydraulic motors could be useful.
This discussion is really interesting though. I've often thought it would be nice to have a hydraulic driven post hole borer. They are too dear new for the use we'd have but some of the recommendations here for where to get hydraulic motors could be useful.
Pheasant Surprise
Member
- Location
- Woodbridge, Suffolk
Just been and looked at mine but the plate is unreadable, and the sister motor still on the shelf is missing the plate. Silage and riveted on alloy plates dont mix well.
For info. You can get a pretty good, if not exact, displacement size of the motor from the gerotor width - “L1” as found in the spec sheets for the Danfoss OMP series (pretty much the industry standard all other gerotor type motors are build to mimick or mirror)...
Firstly thanks to @Chrisf and @Shovelhands for sorting my technical issues.
Right back to hydraulic cement mixers motors. I would use the Danfoss OMR100 motor as you will achieve the 270rpm with the 30lpm being supplied by the tele handler. If you do decide to direct drive the mixer barrel you would be well advised to use the Danfoss OMS series of motors as it is able to deliver more torque but you will require more flow.
Right back to hydraulic cement mixers motors. I would use the Danfoss OMR100 motor as you will achieve the 270rpm with the 30lpm being supplied by the tele handler. If you do decide to direct drive the mixer barrel you would be well advised to use the Danfoss OMS series of motors as it is able to deliver more torque but you will require more flow.
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