3 Attachment(s)
Wrong bearing choice or need for lubrication?
Hi everyone !
I ordered [B]two bearing units to guide an axis that will be driven by two torsion springs[/B] (see 'mecanisme' picture below). The aim of this assembly is basically to create a 'catapult' that can shoot downwards (see 'global_rendu' picture). As you could expect from such a basic system the torque is pretty small as well as the rotation speed (from 0 to 15 rad/s at the end) of the whole system.
Now the two NTN M-[B]UCP 204 D1 bearing[/B] units (technical sheet enclosed) I ordered seem to s[B]low down very much the rotation [/B]of the axis having a huge impact on the final speed of my projectile.
I know about the design requirements to make the bearings resist to different kind of loadings but I had no idea about the slow-down of the units. Do you think I ordered a units that isn't suited for my application (small rotational speed) or that I should just add lubricant or maybe there is just a screw that need to be loosen?
Cheers from Belgium.