Thomson Industries SSETWNM40DD Linear Bearing 40mm

Product Description

The THOMSON INDUSTRIES SSETWNM40DD is a closed twin pillow block linear bearing designed for demanding linear motion applications. With a 40mm bore and a dynamic load capacity of 27,400 pounds, this bearing delivers high load-handling performance in a compact, self-contained pillow block housing. The closed design protects the bearing elements from contamination, making it suited for environments where dust, debris, or coolant are present. Licensed millwrights, mechanical technicians, and OEM assembly teams install this type of component in automated machinery, material handling systems, and precision linear drive assemblies.

This bearing is appropriate for both industrial and commercial machine installations where a rigid, dual-block mounting configuration is required. The twin pillow block format distributes load across two mounting points, reducing stress on the shaft and surrounding structure. It accepts a 40mm round linear shaft and mounts via standard bolt patterns through the integrated housing flanges. Typical applications include CNC equipment, conveyor actuators, and other linear guide systems operating under sustained or intermittent dynamic loads.

Key Features

• Closed twin pillow block housing provides contamination protection for the bearing elements
• 27,400 lb dynamic load capacity supports heavy-duty industrial duty cycles
• 40mm bore sized for standard metric linear shafting
• Overall length of 176mm and width of 108mm in a rigid, flanged housing
• Dual mounting points with 124mm center-to-center hole spacing for secure structural attachment
• Self-contained unit simplifies installation compared to separate shaft support and bearing assemblies

Compatibility

Designed as an OEM-style replacement or direct-fit component for linear motion systems using 40mm round shafting and a closed twin pillow block mounting configuration.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician familiar with linear motion systems. De-energize and lock out all power sources before disassembling existing bearing assemblies. Ensure the mating linear shaft is within specified straightness and diameter tolerances before seating the bearing. Torque all mounting fasteners evenly and verify shaft alignment before returning the system to service.