Thomson Industries A203242 Closed Linear Bearing

Product Description

The THOMSON INDUSTRIES A203242 is a closed-style linear ball bushing bearing designed for precision linear motion applications. With a 1.25-inch bore diameter and 2-inch outside diameter, it fits standard linear shaft configurations and provides a closed bearing style that encloses all ball circuits for maximum load support and contamination resistance. The closed configuration delivers a dynamic load capacity of 520 pounds across 6 ball circuits, making it a solid choice for industrial machinery, automation equipment, and mechanical assemblies that require reliable, repeatable linear movement. This bearing is typically installed by mechanical technicians and maintenance professionals in manufacturing and industrial environments.

This bearing is suited for fixed-alignment linear motion systems using round-bore shafts. The closed design with 6 ball circuits offers higher load capacity than the open-style equivalent, which carries a dynamic load rating of 400 pounds across 5 circuits. The A203242 is appropriate for applications where the shaft must be fully supported around its circumference, such as actuators, slides, and guided linear stages in both light and medium-duty industrial settings.

Key Features

• Closed bearing style with 6 ball circuits for full circumferential shaft support
• 520-pound closed dynamic load capacity for medium-duty linear motion demands
• 1.25-inch bore diameter with round bore type and fixed alignment style
• 2-inch outside diameter for compatibility with standard housing bores
• Steel construction for durability in industrial operating conditions
• Overall length of 2.605 inches with retaining ring groove features for secure axial positioning

Compatibility

Designed as an OEM-style closed linear ball bushing replacement for fixed-alignment linear motion assemblies using a 1.25-inch round-bore shaft and a 2-inch outside diameter housing bore.

Installation Notes

Installation should be performed by qualified mechanical technicians familiar with linear motion component assembly. De-energize and lock out all machinery before handling internal bearing components. Press-fit installation into housings should be performed using proper bearing press tooling to avoid damage to the ball circuits or outer race. Retaining rings should be seated fully in the groove before returning the assembly to service.