Ball Screws and Lead Screws end up being mentioned together because they are both examples of mechanical linear actuators.
As well as this, they can perform similar elements. However there are certain fundamental differences between these two mechanisms, which mean that some applications are more suited to 1 of these screws in contrast to the other.
The most blatant differing feature between a ball screw and a lead screw is that ball screws contain a cyclical system of ball screws. This results in a very complicated design, but you will find of pros as quite. For example lead screws possess a significantly lower efficiency level than ball screw devices. The actual efficiency is just a few lead angle, but ball screw assemblies can regularly be more than 90% efficient. As a result of this exceptional efficiency level, in combination with other factors i.e. low friction, the driving torque of ball screws is approximately 33 percent that in the standard lead screw.
A large part of ball screws may also be back driven, which can be due for the very low frictional issues. Because the components of the ball screw assembly can move freely, it typically straightforward adjust the direction of operation of the ball screw, and use it to translate linear motion into rotational motion. Ball screws perform optimally in the event that require high variety of accuracy and efficiency, together with smooth frictionless movement.
Lead screws are frequently applied to mechanisms where they aren't required to function at high speeds. These mechanisms are not capable of functioning at identical speeds as ball screws, with the frictional effects. They are also less accurate, but function with heavier loads. Easy to lead screws applicable in situations where low speeds need of kit only, and is also not critical for the brings about be extremely accurate.