- #1
runningman19
- 19
- 3
Hi Everyone,
I am working on a project which involves building an extremely low friction turntable. To give you an idea of how low, we're placing a tank full of water on top of the turntable, placing a stirrer into the tank, turning the stirrer on and trying to get the tank to rotate on the bearing. A good estimate for the torque in the stirrer rod is about 10-1 N-m, so the torque is extremely small.
I had initially purchased a 3mm thrust bearing for this purpose, but the tank is about 1 ft in diameter. When I attached the thrust bearing to the plywood disk which the tank was to be placed on top of, there was too much wobble for the turntable to be usable. We also tried a "lazy susan" bearing from Walmart, which was a good size but way too high friction to be useful.
Any suggestions for axial load bearings which are large enough to accommodate a 1 ft diameter tank, but are under $150? I considered something called a flange bearing, but have no idea how appropriate they would be for axial loads.
I have attached a diagram below to give you an idea of what we're doing.
Thanks for the help,
Nick
I am working on a project which involves building an extremely low friction turntable. To give you an idea of how low, we're placing a tank full of water on top of the turntable, placing a stirrer into the tank, turning the stirrer on and trying to get the tank to rotate on the bearing. A good estimate for the torque in the stirrer rod is about 10-1 N-m, so the torque is extremely small.
I had initially purchased a 3mm thrust bearing for this purpose, but the tank is about 1 ft in diameter. When I attached the thrust bearing to the plywood disk which the tank was to be placed on top of, there was too much wobble for the turntable to be usable. We also tried a "lazy susan" bearing from Walmart, which was a good size but way too high friction to be useful.
Any suggestions for axial load bearings which are large enough to accommodate a 1 ft diameter tank, but are under $150? I considered something called a flange bearing, but have no idea how appropriate they would be for axial loads.
I have attached a diagram below to give you an idea of what we're doing.
Thanks for the help,
Nick