The rolling element between the nut and the 2510 ball screw is a threaded roller, and the numerous contact lines make the planetary roller screw very strong in load-bearing capacity. The load transfer element of the 2510 ball screw is a ball, which is a point contact. The main advantage is that there are many contact points to support the load. The threaded roller replaces the ball, which will allow the load to be released quickly through many contact points, thus having a higher impact resistance.

1. Load-bearing capacity life

The advantage of the planetary roller screw and the 2510 ball screw is that they can provide higher rated dynamic and static loads than the ball screw. The threaded roller replaces the ball, which will allow the load to be released quickly through many contact lines, thus having a higher impact resistance.

2. Speed ​​and acceleration

The planetary roller screw can provide higher rotation speed and higher acceleration. Generally, the rollers in the design mechanism of the planetary roller screw are non-circulating, while the balls in the ball screw mechanism are circulating, which will make the rotation speed of the planetary roller screw twice that of the ball screw, and the acceleration will reach 3g.

3. Lead and Pitch

The lead of a planetary roller screw can be made smaller than that of a 2510 ball screw. Since the lead of a planetary roller screw is a function of the pitch, the lead can be less than 0.5mm or less. The lead of a planetary roller screw can be designed and calculated as an integer or decimal (for example: 3.32mm per revolution), and no reduction gear is required to match it. The change in lead does not bring any geometric changes to the screw shaft and nut. The lead of a 2510 ball screw is limited by the diameter of the ball, so the lead will be standard.

4. Stiffness and Strength

The numerous contact lines of a planetary roller screw will greatly improve stiffness and impact resistance.

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