2021-08-29, 12:38 PM
theoretically you are richt and would a ball screw be preferable, in practical use I have not seen yet a ball screw type that could beat our lead screw drive in performance and efficiency.
One off the big disadvantages is that you can move the push rod from the bal screw types, if there is any better efficiency with the ball screw types it gets lost by far because of that.
The type and size of the used motor has much more influence on the efficiency in combination with the exact calculated lead screw angle, size and pitch so you have the best performance and efficiency at the right power and speed.
Yes the Hurd has a ball screw and our drive a lead screw, the hurd ELA35-300-030-12-L specified as 300N can not even handle 15.5kg I had to test with a lower weight I had and that was 12.8 kg ,he can barely handle that with around 3A @ 12V, our drive specified as 200N@45mms can easy handle that at 2.7A@12V, the max power off our drive is around 35kg.
The best performance our drive has is with a 200N load (=+/- 20kg)@ 45mms = 4A @ 12V
One off the big disadvantages is that you can move the push rod from the bal screw types, if there is any better efficiency with the ball screw types it gets lost by far because of that.
The type and size of the used motor has much more influence on the efficiency in combination with the exact calculated lead screw angle, size and pitch so you have the best performance and efficiency at the right power and speed.
Yes the Hurd has a ball screw and our drive a lead screw, the hurd ELA35-300-030-12-L specified as 300N can not even handle 15.5kg I had to test with a lower weight I had and that was 12.8 kg ,he can barely handle that with around 3A @ 12V, our drive specified as 200N@45mms can easy handle that at 2.7A@12V, the max power off our drive is around 35kg.
The best performance our drive has is with a 200N load (=+/- 20kg)@ 45mms = 4A @ 12V