Linear Motion Ball Screws

Linear Motion Ball Screws consist of a screw and a nut that has recirculating ball bearings. These bearings allow the nut to glide smoothly the screw, enabling it to convert rotational motion into linear motion.Linear Motion Ball Screws are a type of mechanical power transmission component used in a wide range of applications that require linear motion.

The screw includes a helical groove cut around its circumference, while the nut contains a set of recirculating ball bearings. These balls are held between the screw and the nut in contact with both the threads and the raceways of the nut. When the screw rotates, the balls roll back and forth along the raceway, enabling the nut to move linearly along the screw in response.

The main advantage of ball screws is their high efficiency. In contrast to other mechanical components, such as hydraulic or pneumatic systems, ball screws can convert a high percentage of the input torque into axial force, with minimal energy loss. 

Here In this page, we introduce series of Linear Motion Ball Screws, you will see data sheet, production pictures,videos of test as follows:

Categories 

SFA Series: High Speed,Super low noise	SFY Series: High Speed,High Lead	SFNU/SFU Series: High Thrust	SFK Series: Min type

 Selection Guide, Drawing, Data sheet of Linear Motion Ball Screws

SFA Series: High Speed,Super low noise

SFY Series: High Speed,High Lead

SFNU/SFU Series:High Thrust

SFK Series: Min type

 Pictures of Packing and Delivery from TallMan Robotics:

FAQs about Linear Motion Ball Screws

What are the different nut styles for linear motion ball screws?

Three main nut styles: (1) Flanged nut—most common, with bolt holes on a square or round flange for easy mounting. (2) Cylindrical nut—no flange, used in compact spaces; requires external anti-rotation (key or pin). (3) Tapped body nut—external threads for screwing into a housing. Within each style, options include single nut (standard), double nut (preloaded), and long nut (higher load capacity). Nut length typically 2–4× screw diameter. Choose flanged for most automation, cylindrical for tight envelopes, tapped for integrated actuator housings.

How does screw end machining affect ball screw performance?

Ball screw ends must be machined to support bearings and accept motor couplings. Standard end configurations: (1) Turned diameter for bearing seats (typically h6 tolerance). (2) Keyway or flat for coupling. (3) Thread for locknut. Poor end machining causes runout (>0.01 mm), which reduces positioning accuracy and causes premature bearing failure. Always specify end machining per ISO or DIN standards.

What are the common causes of ball screw noise and how to fix them?

Noise sources: (1) Contamination—dirt in ball tracks; clean and regrease. (2) Ball recirculation tube damage—replace tube. (3) Worn or flat-spotted balls—replace all balls with same size grade (G10 or better). (4) Misaligned end supports—realign within 0.01 mm. (5) Insufficient lubrication—add grease until old grease exits seals. (6) Excessive preload—reduce by changing to larger clearance class. Normal operating noise is a smooth whirring sound. Clicking indicates damaged recirculation. Grinding means raceway spalling—replace screw and nut immediately to avoid catastrophic failure.

Also You are welcome to watch more projects or visit our video gallery by Youtube: https://www.youtube.com/@tallmanrobotics