The THK FBL35B Series represents a compact, high-precision linear motion solution engineered for light-load applications where space constraints, smooth operation, and accuracy are paramount. This single slide rail system features a robust, integrated design combining a precision-ground rail and a compact, pre-loaded carriage block. The FBL35B model is characterized by its 35mm nominal width, offering a balanced profile for machinery requiring a slim footprint without sacrificing structural integrity or performance. Manufactured from high-grade carbon steel with a selective black oxide coating or optional stainless-steel variants, the series provides excellent corrosion resistance and durability in diverse industrial environments.

Key technical features of the FBL35B Series include the incorporation of THK’s patented LM guide technology, which utilizes a recirculating ball bearing system within the carriage. This design ensures minimal friction, high rigidity, and exceptional travel smoothness. The balls are precision-ground and arranged in a Gothic arch groove profile, enabling four-directional equal load capacity—a critical attribute for applications subject to moment loads or varying force vectors. Pre-loading is applied to eliminate internal clearance, resulting in zero backlash and enhanced positional accuracy. The integrated sealing system, featuring scrapers and end seals, effectively excludes contaminants like dust, chips, and moisture, prolonging service life and maintaining performance in harsh conditions. Additionally, the series is designed for easy installation, with alignment shoulders and tapped holes simplifying integration into machine frames.

Performance advantages of the FBL35B are substantial, delivering high-speed capability with low noise and vibration, thanks to the optimized recirculation path and high-quality finishing of components. Its low friction coefficient translates to reduced drive power requirements, enabling energy-efficient operation and extending the lifespan of associated motors and drives. The series achieves positioning accuracy within microns, making it ideal for precision tasks, while its high stiffness ensures minimal deflection under load, maintaining accuracy during dynamic movements. Maintenance needs are minimal due to the long-term lubrication retention and effective sealing, reducing downtime and total cost of ownership.

Typical applications for the FBL35B Series span across industries where reliability and precision in compact spaces are critical. In industrial machinery, it is commonly deployed in automated assembly systems, pick-and-place robots, and precision measuring instruments, where smooth, accurate linear motion is essential for throughput and quality. Within automotive manufacturing, the series finds use in welding equipment, small component transfer systems, and testing apparatus, benefiting from its durability and contamination resistance. In precision equipment, such as medical device manufacturing, semiconductor handling systems, and optical positioning stages, the FBL35B’s high accuracy and low particulate generation ensure contamination-free and repeatable performance. Its versatility also extends to packaging machinery, printing systems, and laboratory automation, where its compact design and reliable operation support efficient, high-precision processes.