ABB FSU2505 FSU series ball screws robots convert rotational into linear motion

Here is the parameter introduction of the ABB FSU2505 FSU series ball screws for robots:

Basic Dimensions

Nominal Diameter: The nominal diameter of the FSU2505 ball screw is 25mm, which is an important dimension determining the overall size and load-bearing capacity of the ball screw.

Lead: The lead is 5mm. That is, when the screw rotates one full turn, the nut will move 5mm axially along the screw. This parameter affects the linear motion speed and positioning accuracy of the robot.

Nut Dimensions and Hole Spacing: The outer diameter of the nut is usually around 40mm, and the distance between the symmetrical mounting holes of the nut is 55mm. These dimensions are crucial for the installation of the nut on the robot and ensure a proper connection and force transmission with other components.

Ball Diameter and Circulation Mode: The ball diameter is 3.175mm. The FSU2505 ball screw usually adopts an external ball circulation mode. In this mode, the balls return to the space between the screw and the nut through a spiral groove or a tube on the outer surface of the nut after completing the circulation process.

Load-Bearing Capacity

Dynamic Rated Load: The dynamic rated load of the FSU2505-4 model is about 1380kgf. The dynamic rated load indicates the maximum load that the ball screw can withstand under dynamic conditions, ensuring reliable operation without excessive wear or deformation during the actual operation of the robot.

Static Rated Load: The static rated load of the FSU2505-4 model is about 2450kgf. The static rated load represents the maximum load that the ball screw can bear when it is stationary or in a static state, which is an important parameter to consider when the robot is in a standby state or subjected to static external forces.

Other Parameters

Material: The FSU2505 ball screw is made of high - quality materials such as SCM450, S55C, and CF53, which have good mechanical properties and wear resistance, ensuring the service life and reliability of the ball screw.

Thread Type: The thread type is usually right - handed, but some models can also be produced as left - handed threads according to customer requirements to meet the specific installation and operation needs of different robots.

Precision Grade: The precision grade can reach C7 or C5, which means that the ball screw can provide high-precision linear motion, meeting the requirements of high-precision positioning in robotic applications.