Thomson Industries DS20 Die Set Linear Ball Bushing

Product Description

The THOMSON INDUSTRIES DS20 is a closed-style die set bushing linear ball bearing designed for precision linear motion applications. With a 1.25-inch inside diameter and a 520-pound dynamic load capacity, this fixed-alignment bushing is built to handle demanding reciprocating loads in tooling and industrial equipment. The round bore and closed bearing style keep the ball elements retained and protected, making it suitable for die set guide post assemblies and similar precision machinery. Machinists, toolmakers, and maintenance technicians install this component as part of die set guide systems requiring consistent, repeatable linear travel.

The DS20 is used in die set assemblies where a guided bushing must ride along a hardened guide post with minimal play and consistent load transfer. Its fixed alignment style means it is intended for installations where shaft and housing alignment is controlled at assembly. This bushing is a direct fit in applications calling for a 1.25-inch bore linear ball bushing with a 2.31-inch outside diameter, including punch press tooling, stamping dies, and precision fixture guides commonly found in metalworking and manufacturing environments.

Key Features

• 1.25-inch inside diameter with a precision bore diameter of 1.2498 inches for close-tolerance shaft fit
• 520-pound dynamic load capacity for use in demanding reciprocating and linear load applications
• Closed bearing style retains ball elements and provides protection in die set environments
• Fixed alignment style for installations with controlled shaft and housing alignment
• 2.31-inch outside diameter with a matching center-to-center bore length of 2.31 inches
• Round bore design for standard cylindrical guide post applications

Compatibility

Designed as an OEM-style replacement or direct installation component for die set guide post assemblies requiring a closed, fixed-alignment linear ball bushing with a 1.25-inch bore and 2.31-inch outside diameter.

Installation Notes

Installation is typically performed by toolmakers or maintenance technicians familiar with die set assembly procedures. Press the bushing into the housing bore using an arbor press and appropriate installation tooling to avoid damage to the ball retainer or bore surface. Ensure the guide post and housing bore are clean and within specified tolerances before installation. Always de-energize and lock out the press or machine before servicing die set components.