Thomson R81420 Precision Ball Bushing Bearing

Description:

The Thomson R81420 Precision Ball Bushing Bearing is used in precision linear motion systems requiring smooth, low-friction travel and accurate shaft guidance. Commonly installed in CNC machines, industrial automation equipment, packaging machinery, material handling systems, and automated assembly equipment, this precision steel ball bushing features a closed, non-self-aligning design for use on precision round shafts. Maintenance teams and system integrators use this bearing for repair, retrofit, expansion, or replacement of linear motion systems.

Applications:

The Thomson R81420 Precision Ball Bushing Bearing is commonly used in CNC machining centers, robotics, automated assembly systems, packaging equipment, conveyor systems, inspection machines, laboratory automation, and other industrial applications requiring precise linear guidance, low-friction movement, and dependable bearing performance.

Technical Specifications:

• Manufacturer: Thomson Industries
• Manufacturer Part Number (MPN): R81420
• Product Type: Precision Ball Bushing Linear Bearing
• Bearing Series: Precision Steel Ball Bushing®
• Bearing Style: Closed
• Bearing Configuration: Single
• Self-Aligning: No
• Adjustable: No
• Nominal Shaft Diameter: 0.500 in (12.70 mm)
• Outside Diameter: 0.875 in (22.23 mm)
• Overall Length: 1.250 in (31.75 mm)
• Distance Between Retaining Grooves (C1): 0.967 in (24.56 mm)
• Retaining Ring Groove Width (C2): 0.046 in (1.17 mm)
• Number of Ball Circuits: 4
• Dynamic Load Capacity: 85 lbf (378 N)
• Maximum Operating Temperature: 500°F (260°C)
• Shaft Compatibility: Thomson Class S Precision Shafting
• Construction: Hardened steel, recirculating ball design
• Corrosion Resistant: No
• Weight: 0.08 lb (0.036 kg)
• Coefficient of Friction: As low as 0.001
• Features: Precision-ground steel construction, rigid low-drag linear motion, recirculating ball technology, designed for high efficiency and long service life.

Common Replacements:

• Thomson A81420
• Thomson A81420-NBALL
• Thomson XA81420