Thomson Super20 Super Ball Bushing Linear Bearing

Description:

The Thomson SUPER20 Super Ball Bushing Linear Bearing is used in precision linear motion systems to provide smooth, self-aligning linear travel on 1.250-inch Class L round shafts. Commonly installed in CNC machines, industrial automation equipment, robotics, packaging machinery, semiconductor equipment, and material handling systems, this closed-style linear bearing features six ball circuits, engineered polymer retainers, and a lightweight, low-friction design for accurate and repeatable motion. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of precision round shaft linear guide systems.

Applications:

The Thomson SUPER20 is designed for end-supported Class L shaft applications requiring precise positioning, high load capacity, and long service life. Its self-aligning design compensates for minor shaft misalignment, while the adjustable bearing plates provide accurate diametrical fit, making it ideal for CNC machining centers, robotics, automated assembly equipment, semiconductor manufacturing, packaging machinery, inspection systems, and other high-precision OEM linear motion applications.

Technical Specifications:

• Manufacturer: Thomson Industries
• Manufacturer Part Number (MPN): SUPER20
• Product Type: Super Ball Bushing Linear Bearing
• Series: Super Ball Bushing®
• Bearing Style: Closed
• Bearing Configuration: Single Linear Bearing
• Material: Hardened Steel with Engineered Polymer Retainers
• Bearing Type: Ball Bushing Linear Bearing
• Adjustable: Yes
• Self-Aligning: Yes
• Nominal Bore (ID): 1.250 in (31.75 mm)
• Outer Diameter (OD): 2.000 in (50.80 mm)
• Overall Length: 2.625 in (66.68 mm)
• Distance Between Retaining Rings (C1): 2.004 in (50.90 mm)
• Retaining Ring Groove Width (C2): 0.068 in (1.73 mm)
• Number of Ball Circuits: 6
• Compatible Shaft Class: Class L
• Dynamic Load Capacity: 1,500 lbf (6,672 N)
• Maximum Operating Temperature: 85°C (185°F)
• Weight: 0.45 lb (0.204 kg)
• Roll Pack: No
• Food Grade Rated: No
• Corrosion Resistance: Standard (Not Corrosion Resistant)
• Seals: None
• Features: Closed design for end-supported shafts, patented Super Ball Bushing® technology, adjustable preload capability, self-aligning bearing plates, engineered polymer retainers, lightweight construction, low coefficient of friction, reduced operating noise, and long service life. 

Common Replacements:

• Thomson SUPER20-DP
• Thomson SUPER20-CR
• Thomson SUPER20-NBALL