Thomson SSU20WW-CR Super Smart Ball Bushing Linear Bearing

Description:

The Thomson SSU20WW-CR Super Smart Ball Bushing Linear Bearing is used in precision linear motion systems to provide smooth, self-aligning motion on 1.250-inch precision shafts. Commonly installed in CNC machines, industrial automation equipment, robotics, packaging machinery, semiconductor equipment, and material handling systems, this closed, corrosion-resistant linear bearing features dual integral wipers and patented Super Smart Ball Bushing® technology for superior contamination protection and extended service life. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of end-supported inch linear shaft systems.

Applications:

The Thomson SSU20WW-CR is designed for end-supported inch shaft applications requiring high load capacity, low-friction operation, and automatic compensation for shaft and housing misalignment. It is widely used in CNC machining centers, automated assembly equipment, robotics, packaging systems, medical devices, semiconductor manufacturing, inspection equipment, and custom OEM machinery utilizing 1.250-inch Thomson L-class shafting. Dual integral wipers retain lubrication while helping protect the bearing from dust, debris, and moisture, and the corrosion-resistant construction makes it suitable for harsh industrial environments.

Technical Specifications:

• Manufacturer: Thomson Industries
• Manufacturer Part Number (MPN): SSU20WW-CR
• Product Type: Super Smart Ball Bushing Linear Bearing
• Series: Super Smart Ball Bushing® Inch (SSU)
• Bearing Style: Closed
• Bearing Configuration: Single
• Adjustable: No
• Self-Aligning: Yes
• Nominal Bore (ID): 1.250 in (31.75 mm)
• Outside Diameter (OD): 2.000 in (50.80 mm)
• Overall Length (C): 2.625 in (66.68 mm)
• Inner Ring Width (C1): 2.031 in (51.59 mm)
• Minimum End Clearance (C2): 0.068 in (1.73 mm)
• Number of Ball Circuits: 10
• Compatible Shaft Class: L Inch Shafting
• Wipers/Seals: WW (Dual Integral Wipers)
• Bearing Type: Closed for End-Supported Shaft Applications
• Corrosion Resistant: Yes (CR Option)
• Dynamic Load Capacity: 7,317 N (1,645 lbf)
• Maximum Operating Temperature: 85°C (185°F)
• Weight: 0.236 kg (0.52 lb)
• Roll Pack: No
• Food Grade Rated: No
• Features:Patented Super Smart Ball Bushing® technology, corrosion-resistant construction, universal self-alignment, dual integral wipers, precision recirculating ball technology, high dynamic load capacity, low-friction operation, quiet performance, and extended bearing service life. 

Common Replacements:

• Thomson SSU20W-CR
• Thomson SSU20-CR
• Thomson SSU20WW-CRDP