Ball Screw Nut Types

A screw shaft which serves as the screw assembly and a ball nut containing ball bearings which acts as the nut.

Ball screw nut types. The ball nut determines the load and life of the ball screw assembly. These three nut types are described as follows. Types of ball screw nuts nuts of ball screws are categorized by ball circulation method into return pipe type deflector type and end cap type. In a traditional ball screw the screw shaft is threaded while the closely related thread less ball screw uses a smooth shaft with a carefully configured ball nut to determine the.

Precision ground screws are generally ex factory deliveries supplied with nut assembled to the screw and journal ends machined. In addition to circulation methods ball screws are categorized also by preloading method. A 682 features and types ball screw features of the ball screw driving torque one third of the sliding screw with the ball screw balls roll between the screw shaft and the nut to achieve high efficiency. When comparing the two screw types at the same capacity level.

There are a wide variety of factors which influence the type of screw system selected. Ball screw systems require less motor horsepower to move the same load than do the equivalent acme screw. Our product pages detail the type of wiper mounting arrangement for each ball nut model. As well as being able to apply or withstand high thrust loads they can do so with minimum internal friction.

Ball screws are generally put into 2 categories being rolled screw or precision ground screw. Contact rockford ball screw for further information on enclosures. The ratio of the number of threads in the ball nut circuit to the number of threads on the ball screw determines how much sooner the ball nut will reach fatigue failure wear out than the ball screw will. Ball nuts are manufactured with two types of ball return systems.

Brush wipers may require customer supplied retention primarily on the v thread end of the ball nut on models that do not have internal wipers and snap rings. A ball screw is composed of two components. Ball screw systems are more efficient than acme screw systems. A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction a threaded shaft provides a helical raceway for ball bearings which act as a precision screw.

Ball screws work in a similar fashion to ball bearings where hardened steel balls move. Nuts with plastic ball returns only to 176 f 80 c. As a general rule rolled ball screw is more commonly stocked offering tolerance grade c7 c10.