How Kuroda Ball Screw Actuators Support Precision Automation

Ball screw actuators are a foundational technology in high-precision automation. These devices convert rotary motion into linear motion using a ball screw, slide block, and recirculating balls. Linear actuators enable smooth, accurate movement that supports critical operations in robotics, semiconductor manufacturing, and industrial automation.

Kuroda engineers and manufactures ball screw actuators with a focus on durability, accuracy, and long-term performance. In this article, we explore why ball screw actuators are key to power precision automation in high-demand industries.

A ball screw actuator is a mechanical system that translates rotational input into linear output. It typically includes four major components:

The screw shaft rotates and moves the slide block linearly along the actuator while being guided by the matching threads of the screw shaft and slide block. The inclusion of balls in between the screw shaft and slide block significantly lowers friction and improves load capacity as well as positioning accuracy when compared to conventional lead screws.
Ball screw actuators are valued for being an integration of several components into a single unit, their consistent speed control, and high repeatability. These qualities make them ideal for industries that rely on exact movement under a wide range of conditions.

Kuroda doesn’t compromise on process control. We design our own grinding machines and conduct all thread finishing in-house. This holistic approach gives us tighter control over tolerances and quality standards than manufacturers that rely on third-party equipment.
Our production facilities in Japan and Germany are certified to ISO 9001 and ISO 14001 standards. At our manufacturing center, environmental conditions are tightly managed. All machining and areas are temperature-regulated to 23°C ±1°, and anti-vibration foundations are built into our factory floors. These conditions help prevent micro-distortion and maintain thread integrity during production.
We thoroughly inspect each actuator to verify torque consistency, dimensional accuracy, smooth motion, and repeatability according to spec. These checks help ensure that every actuator we ship meets the exact requirements of your application.

Whether you're designing a precision assembly system or upgrading motion components in an existing machine, our actuators are designed to meet your goals without overengineering or unnecessary complexity.

Choosing a ball screw actuator involves several key factors:

Kuroda has available ball screw actuator selection software to help engineers quickly narrow down the right product based on lead, shaft diameter, and desired accuracy. We also support custom solutions when off-the-shelf actuators don’t meet the application’s constraints.

If you’re unsure which model is correct, our engineering team can review your application specs and recommend the best fit.

Actuators from Kuroda are engineered not only for precision but also for longevity. By reducing friction and maintaining consistent motion over time, our ball screw actuators support extended equipment life and minimize maintenance cycles. They deliver stable results with fewer adjustments and lower operating costs, whether installed in a 24/7 industrial process or a compact robotic arm.