Thomson Industries Qs 1 L Pd 72 Round Linear Shaft

Product Description

The THOMSON INDUSTRIES QS 1 L PD 72 is a predrilled round linear shaft designed for precision linear motion applications. Machined from 1566-grade steel, this shaft measures 1 inch in diameter and 72 inches in overall length, weighing approximately 15.984 pounds. The diameter is held to a tight tolerance range of 0.9990 to 0.9995 inches, and the shaft is through-hardened to a Rockwell hardness of 60 to 65C. These characteristics make it well suited for demanding guide and support shaft applications where dimensional consistency and surface hardness are critical to bearing performance and service life.

This shaft is used in industrial linear motion assemblies including automated machinery, actuator systems, conveyor frameworks, and precision positioning equipment. The predrilled end configuration simplifies mounting and reduces on-site machining time. It is appropriate for both light and medium-duty linear guide systems where a 1-inch diameter hardened steel shaft is the specified component. Mechanical engineers, millwrights, and industrial maintenance technicians are the primary installers of this type of linear shaft.

Key Features

• 1-inch nominal diameter held to a 0.9990 to 0.9995 inch tolerance for close-fit linear bearing compatibility
• 72-inch overall length provides full-length shaft stock for extended travel or multiple bearing spans
• Through-hardened 60 to 65C Rockwell for wear resistance and long service life
• 1566-grade steel construction offers high strength and machinability
• Predrilled ends reduce installation time and eliminate the need for field drilling
• Diameter tolerance of 0.031 inches supports consistent fit across standard linear bearing bores

Compatibility

Designed as an OEM-style replacement or direct-install component for industrial linear motion systems requiring a 1-inch diameter hardened steel round shaft.

Installation Notes

Installation is typically performed by millwrights or mechanical technicians familiar with linear motion system assembly. De-energize and lock out all machinery before removing or installing shafting. Shaft surfaces should be kept free of nicks, burrs, and contamination prior to seating linear bearings to prevent premature bearing wear. Follow equipment manufacturer torque and alignment specifications when securing end supports and bearing mounts.