High Torque, Large Gear reduction gearbox
High Torque, Large Gear reduction gearbox
(OP)
Hello Everyone
I'm a long time reader, first time poster to Eng-Tips.
I'm looking for a gearbox for an application we have which involves lifting/rotating a heavy piece of machinery on transportation device. I'm not entirely sure something like this is possible or, at the very least, feasible for this application.
The gearbox shall be hand operated via handwheel or similar device.
The torque values will be around 50,000 N-m (37,000 ft-lbs)
Based on this value and the calculated input torque, the gear reduction will need to be ~10,000:1.
The output shaft only has to rotate a total of 90 degrees (horizontal to vertical) and must be bi-directional.
Can anyone recommend a starting point for me?
Much appreciated.
I'm a long time reader, first time poster to Eng-Tips.
I'm looking for a gearbox for an application we have which involves lifting/rotating a heavy piece of machinery on transportation device. I'm not entirely sure something like this is possible or, at the very least, feasible for this application.
The gearbox shall be hand operated via handwheel or similar device.
The torque values will be around 50,000 N-m (37,000 ft-lbs)
Based on this value and the calculated input torque, the gear reduction will need to be ~10,000:1.
The output shaft only has to rotate a total of 90 degrees (horizontal to vertical) and must be bi-directional.
Can anyone recommend a starting point for me?
Much appreciated.





RE: High Torque, Large Gear reduction gearbox
That should be you into a range where ordinary gear reducers become affordable.
Mike Halloran
Pembroke Pines, FL, USA
RE: High Torque, Large Gear reduction gearbox
10,000:1 for 90 degrees equals 2,500 rotations on the input shaft. If you could maintain one revolution per second at the input shaft that would be 2,500 seconds, or about 42 minutes. If you are paying someone very much of a wage, you can avoid the labor costs by installing a small motor.
You are probably not going to throw any lubricant with a hand-cranked reducer, so it will require special lubrication.
RE: High Torque, Large Gear reduction gearbox
I'd look at using a hydraulic motor and bike mounted pump. As required, it would be easy to drive the pump some other way, like a small gas motor or mechanical pickoff. Reverse the direction with a hydraulic valve and no change in input direction is required.
RE: High Torque, Large Gear reduction gearbox
je suis charlie
RE: High Torque, Large Gear reduction gearbox
RE: High Torque, Large Gear reduction gearbox
https://www.youtube.com/watch?v=5q-BH-tvxEg
RE: High Torque, Large Gear reduction gearbox
Regards,
Lyle
RE: High Torque, Large Gear reduction gearbox