Thomson Industries Qs 1/2 L 12 Linear Shafting 0.5in Steel

Product Description

The THOMSON INDUSTRIES QS 1/2 L 12 is a round linear shafting rod used in precision linear motion systems. Machined from 1566-grade steel and hardened to 60-65 Rockwell C, it delivers the surface hardness and dimensional consistency required for guided shaft applications. The shaft measures 0.5 inches in diameter and 12 inches in overall length. Diameter tolerance is held between 0.4990 inches and 0.4995 inches, making it suitable for close-tolerance linear bearings and bushings. Mechanical contractors, machine builders, and automation technicians install this type of shafting in linear bearing assemblies, actuator guides, and precision slide systems.

This shaft is suited for residential and commercial mechanical systems that require precise linear motion guidance. Typical applications include linear bearing rails, rod-and-bushing assemblies, and machine slideways where consistent shaft geometry is critical. The 12-inch length fits a range of compact actuator and guide configurations. The 1566 steel construction with through-hardening to 60-65C provides the wear resistance needed in continuous-motion applications.

Key Features

• 1566-grade steel construction for strength and wear resistance
• Surface hardness of 60 to 65 Rockwell C for extended service life in bearing contact
• Tight diameter tolerance of 0.4990 to 0.4995 inches for precise linear bearing fit
• 0.5 inch nominal diameter, 12 inch overall length
• Standard shaft type compatible with common linear bearing inner bore sizes

Compatibility

Designed as an OEM-style replacement or new-install component for standard linear bearing and bushing assemblies requiring a 0.5 inch diameter round shaft.

Installation Notes

Installation is performed by mechanical technicians or machine builders working on linear motion assemblies. De-energize and lock out any powered actuator or drive system before handling or replacing shafting. Shafting surfaces should be kept clean and free of burrs before inserting into linear bearings to avoid scoring the bore. Follow applicable machine safety standards and manufacturer guidelines for bearing preload and shaft support spacing.