Thomson Industries Qs 1/2 L 30 Round Linear Shaft

Product Description

The THOMSON INDUSTRIES QS 1/2 L 30 is a round linear shafting component machined from 1566-grade steel and hardened to 60 to 65 HRC on the Rockwell C scale. The shaft measures 0.5 inches in diameter and 30 inches in overall length. Diameter tolerance is held between 0.4990 inches and 0.4995 inches, providing the close fit required for precision linear motion assemblies. This shaft is designed for use as a guide or support rail in linear bearing systems and is a direct-fit Thomson standard shaft profile. Mechanical technicians and machine builders are the primary installers.

This shaft is suited for industrial linear motion applications including automation equipment, CNC machine axes, material handling systems, and precision positioning stages. The 0.5-inch diameter and 30-inch length make it a common selection for mid-travel linear actuator assemblies where a hardened steel rail is required. The 1566 steel grade and tight diameter tolerance ensure consistent bearing interface across the shaft length.

Key Features

• 1566 steel construction hardened to 60 to 65 HRC for wear resistance
• Diameter tolerance of 0.4990 to 0.4995 inches for precision linear bearing fit
• 30-inch overall length suits mid-range travel linear motion assemblies
• Standard Thomson shaft profile for compatibility with matching linear bearing housings
• Single-piece shaft - no joints or welds along the travel length

Compatibility

Designed as an OEM-style replacement or build component for standard Thomson linear motion shaft systems using the 0.5-inch nominal diameter shaft series.

Installation Notes

Installation is typically performed by mechanical technicians or machine builders. Secure the shaft in end-support blocks or pillow blocks rated for the shaft diameter before applying any load. Inspect the shaft surface for nicks or burrs before inserting linear bearings, as surface defects will damage bearing elements. Follow equipment manufacturer torque specifications for all mounting hardware.