Thomson PB16A Ball Bushing Pillow Block Linear Bearing

Description:

The Thomson PB16A Ball Bushing Pillow Block Linear Bearing is used in precision linear motion systems to provide rigid, low-friction linear support for 1.000-inch precision shafting. Commonly installed in CNC machines, automated manufacturing equipment, packaging machinery, material handling systems, and industrial automation where accurate linear guidance and high-temperature capability are required. Maintenance teams and system integrators use this pillow block for machine repairs, linear bearing replacements, equipment retrofits, and OEM installations to restore smooth and reliable linear motion.

Applications:

The Thomson PB16A is designed for closed-shaft linear motion applications requiring high rigidity, precision, and durability. Its all-steel construction makes it ideal for replacing plain bearings in high-temperature environments while providing significantly lower friction. It is widely used in CNC machining centers, assembly automation, inspection systems, packaging equipment, conveyor systems, and custom OEM machinery utilizing 1-inch Thomson Class S shafting.

Technical Specifications:

• Manufacturer: Thomson Industries, Inc.
• Manufacturer Part Number (MPN): PB16A
• Product Type: Precision Steel Ball Bushing Pillow Block Linear Bearing
• Bearing Type: Closed Pillow Block, Single Bearing
• Bearing Construction: Precision Steel Ball Bushing
• Self-Alignment: Not Self-Aligning
• Adjustable: No
• Nominal Shaft Diameter: 1.000 in (25.40 mm)
• Compatible Shafting: Thomson Class S Shafting
• Overall Width (A): 3.250 in (82.55 mm)
• Overall Length (B): 2.880 in (73.15 mm)
• Base Length (B1): 2.250 in (57.15 mm)
• Center Shaft Height (H): 1.375 in (34.93 mm)
• Overall Height (H1): 2.560 in (65.02 mm)
• Mounting Hole Centers (E1): 2.500 in (63.50 mm)
• Mounting Hole Centers (E2): 1.500 in (38.10 mm)
• Mounting Hole Diameter: 0.280 in (7.11 mm)
• Mounting Bolt Size: 1/4 in
• Housing Material: Steel
• Dynamic Load Capacity: 350 lbf (1,556.9 N)
• Maximum Operating Temperature: 185°F (85°C)
• Weight: 2.1 lb (0.953 kg)
• Features: All-steel construction, low-friction recirculating ball design, closed pillow block housing, high rigidity, suitable for high-temperature applications, coefficient of friction as low as 0.001.

Common Replacements:

• Thomson PB16ADJ
• Thomson PB16A-NBDP
• Thomson PB16A-SP