Thomson Industries SSEM20 Closed Linear Bearing 20mm

Product Description

The THOMSON INDUSTRIES SSEM20 is a closed linear bearing designed for precision linear motion applications in industrial and mechanical systems. Built around a 20mm bore diameter (0.787 inch), this Super Smart Ball Bushing bearing delivers a dynamic load capacity of 4,000 pounds, making it suitable for moderate-to-heavy-duty linear guide systems. The self-aligning design compensates for minor shaft misalignment, reducing wear and extending service life. With 10 ball circuits and a 32mm outside diameter, the SSEM20 provides smooth, low-friction travel along hardened steel shafting. Licensed machinists, mechanical technicians, and OEM assembly professionals typically source this bearing for integration into automated equipment and precision machinery.

The SSEM20 is suited for closed-configuration linear bearing applications where full shaft enclosure is required to retain lubrication and exclude contaminants. Its round bore and self-alignment style make it appropriate for use in linear slides, pick-and-place equipment, CNC axis assemblies, and other motion control setups where consistent load distribution along the shaft is critical. The closed style makes it a common choice in environments where dust or debris may be present around the shaft.

Key Features

• Super Smart Ball Bushing design with 10 ball circuits for smooth, consistent linear motion
• Self-aligning bore style compensates for minor shaft misalignment
• Closed bearing style retains lubrication and provides contamination resistance
• 4,000 lb dynamic load capacity suitable for moderate-to-heavy-duty applications
• 20mm inside diameter with 32mm outside diameter for standardized shaft and housing fitment
• Overall length of 45mm with retaining ring grooves for secure axial positioning

Compatibility

Designed as an OEM-style closed linear bearing for use with 20mm diameter hardened steel shafting in standard linear motion systems and assemblies.

Installation Notes

Installation should be performed by a qualified mechanical technician familiar with linear motion components and bearing press-fit procedures. Ensure the mating shaft and housing bore are clean, within tolerance, and free of burrs before installation. Power down and de-energize any associated drive systems before servicing the bearing assembly. Retaining rings should be seated fully in the groove before returning the assembly to service.