Thomson Industries 3/8 L Smae L 12 Round Linear Shaft

Product Description

The THOMSON INDUSTRIES 3/8 L SMAE L 12 is a round linear shafting component used in linear motion assemblies across industrial and mechanical applications. This shaft measures 0.38 inches in diameter and 12 inches in overall length, manufactured from steel with a Rockwell hardness of 60C. The diameter tolerance is held between 0.3740 inches and 0.3745 inches, providing the precision fit required for linear bearing systems. The annealed ends allow for easier machining or staking during assembly. It is sized and finished for use in guided linear motion setups where dimensional accuracy and surface integrity are critical.

This round linear shaft is suited for use in light-duty to medium-duty linear motion systems found in automation equipment, machine tools, printing machinery, and material handling systems. The 12-inch length and 3/8-inch diameter make it a common fit for compact actuator assemblies, slide mechanisms, and guide rail configurations. Mechanical technicians and machine builders typically source this component for OEM builds or field replacement of worn or damaged shafting in existing linear systems.

Key Features

• 0.38-inch nominal diameter with tight tolerance range of 0.3740 to 0.3745 inches for precision linear bearing fit
• 12-inch overall length suits compact linear motion assemblies
• Steel construction with 60C Rockwell hardness for wear resistance in sliding contact applications
• Annealed ends allow for secondary machining, drilling, or staking without cracking
• Single-piece shaft with consistent straightness for reliable guided motion

Compatibility

Designed as an OEM-style replacement or new-build component for linear motion systems that accept 3/8-inch diameter round linear shafting with standard tolerance fits.

Installation Notes

Installation is typically performed by mechanical technicians or machine builders working on linear motion assemblies. Ensure all power to the machine or actuator is locked out before removing or installing shafting. Use appropriate alignment tools to verify shaft straightness and concentricity within the bearing housing before final assembly. Secure shaft ends per the original equipment design specifications using applicable fasteners or retaining hardware.