THK’s BLW SERIES Caged Ball Screw represents a significant advancement in precision linear motion technology, engineered to deliver exceptional performance in demanding industrial applications. This innovative design incorporates a unique caged ball mechanism that fundamentally enhances operational efficiency and reliability. Unlike conventional ball screws where balls can contact each other during operation, the BLW SERIES utilizes a specially designed cage to maintain consistent spacing between balls. This configuration drastically reduces friction, heat generation, and torque variation while eliminating ball-to-ball contact noise.

The technical sophistication of the BLW SERIES extends beyond its caged ball system. These precision ball screws feature optimized recirculation paths that ensure smooth ball movement throughout the entire circuit, minimizing vibration and providing exceptionally stable motion characteristics. The precision-ground screw shafts achieve remarkable accuracy levels with lead errors maintained within strict tolerances, making them ideal for applications requiring precise positioning control. Enhanced sealing systems protect against contaminants while specialized wipers prevent foreign particle ingress, significantly extending service life even in harsh operating environments.

Performance advantages of the BLW SERIES are substantial across multiple metrics. The reduced friction characteristics translate directly to higher mechanical efficiency, typically achieving 90% or greater, which consequently lowers drive motor requirements and reduces energy consumption. The elimination of ball-to-ball contact results in up to 10dB noise reduction compared to standard ball screws, creating quieter operating conditions. Enhanced lubrication retention within the cage structure ensures consistent performance over extended periods while reducing maintenance frequency. The design also demonstrates superior high-speed capabilities, with DN values reaching 160,000, and exhibits minimal torque fluctuation across the entire speed range.

These performance characteristics make the BLW SERIES particularly well-suited for precision applications across multiple industries. In industrial automation, they excel in semiconductor manufacturing equipment, precision assembly robots, and CNC machine tools where accurate positioning and smooth motion are critical. The automotive industry utilizes these components in electric power steering systems, transmission manufacturing equipment, and automated welding systems where reliability and quiet operation are paramount. Precision equipment applications include medical devices such as CT scanners and surgical robots, optical positioning systems, and coordinate measuring machines that demand the highest levels of accuracy and repeatability. The combination of precision engineering, reduced maintenance requirements, and long-term reliability establishes the BLW SERIES as a superior solution for applications where performance consistency cannot be compromised.