dvd,
AUMA are furnishing the actuators.
as they are installed and miscomunication took placed between them and the manufactory of the stem, I have determined that we may have wrong actuator.
The miscommunication was generated by the fact that nominal torque is listen at 145o, then up to...
more information:
I have calculated the torque in frictionless scenario got 265ft_lbs
Considering:
Acme thread: 2a is 29degrees
pitch is 1/3: 3threads per inch
coefficient of friction: for bronze nut and stainless steel stem, lubricated I have found value from 0.05 to 0.12. that result in value...
I have a 60000lb loaa on the end of a 3" stem with a 3 threads per inch ,acme. this needs to be raised by rotating thre not on the other end being i nsde a gearbox. What's the torque required ? any help thanks.
