Force to rotate 100 ton cylinder suspended on Rooler Brg
Force to rotate 100 ton cylinder suspended on Rooler Brg
(OP)
I have a 100 ton concrete cylinder 130" in dia x 230" in HT
This obj is suspended on a Torrington Roller Thrust Brg. How would one calculate the force req'd to overcome the bearing friction and cylinder inertia?
This obj is suspended on a Torrington Roller Thrust Brg. How would one calculate the force req'd to overcome the bearing friction and cylinder inertia?





RE: Force to rotate 100 ton cylinder suspended on Rooler Brg
It'll be a torque, not a force, at rough guess.
Cheers
Greg Locock
RE: Force to rotate 100 ton cylinder suspended on Rooler Brg
I believe the moment of inertia is not needed. Just the starting bearing coefficient of friction, the "mean diameter" of the bearing (where the rollers are located) and the cylinder weight are needed to calculate the atarting torque.
The starting torque to rotate the cylindser is
T=100*mu*D/2
Where
D - the "mean diameter" of the bearing
T - Torque
mu - starting bearing coefficient of friction (the running coefficient of friction will be lower)
The moment of inertia is only needed if you want to calculate the acceleration and torque to achieve angular velocity in a specifed time.
RE: Force to rotate 100 ton cylinder suspended on Rooler Brg
Cheers
Greg Locock
RE: Force to rotate 100 ton cylinder suspended on Rooler Brg
RE: Force to rotate 100 ton cylinder suspended on Rooler Brg
Cheers
Greg Locock