THOMSON SPB8 SUPER BALL BUSHING LINEAR BEARING

Description:

The Thomson SPB8 Super Ball Bushing Linear Bearing is used in precision linear motion systems to provide smooth, self-aligning travel on 1/2-inch precision shafts. Commonly installed in CNC machines, industrial automation equipment, packaging machinery, robotics, laboratory equipment, and material handling systems, this closed-type Super Ball Bushing® pillow block features an aluminum housing with a self-aligning recirculating ball bearing for accurate, low-friction linear motion. Maintenance teams and system integrators use this bearing for repair, retrofit, expansion, or replacement of end-supported linear guide systems.

Applications:

The Thomson SPB8 Super Ball Bushing Linear Bearing is widely used in factory automation, CNC equipment, automated assembly systems, packaging machinery, inspection equipment, medical devices, conveyor systems, and custom OEM machinery requiring precise linear guidance. Its self-aligning design compensates for minor shaft misalignment while delivering smooth travel, high-speed operation, and extended service life.

Technical Specifications:

• Manufacturer: Thomson Industries
• Manufacturer Part Number (MPN): SPB8
• Product Type: Super Ball Bushing Linear Bearing Pillow Block
• Series: Super Ball Bushing®
• Bearing Style: Closed
• Pillow Block Type: Single, Non-Adjustable
• Bearing Configuration: Single
• Self-Aligning: Yes
• Adjustable: No
• Nominal Shaft Diameter: 0.500 in (12.70 mm)
• Compatible Shaft Class: Thomson Class L Shafting
• Housing Material: Aluminum
• Bearing Type: Recirculating Ball Bushing
• Overall Width (A): 2.000 in (50.80 mm)
• Overall Length (B): 1.690 in (42.93 mm)
• Body Width (A2): 1.380 in (35.05 mm)
• Shaft Center Height (H): 0.687 in (17.45 mm)
• Overall Height (H1): 1.250 in (31.75 mm)
• Mounting Hole Diameter (N): 0.160 in (#6)
• Mounting Hole Center Distance (E2): 1.000 in (25.40 mm)
• Dynamic Load Capacity: 255 lbf (1,134 N)
• Maximum Operating Temperature: 185°F (85°C)
• Weight: 0.20 lb (0.091 kg)
• Seals: Integral Double-Acting Seals
• Corrosion Resistance: Standard (Non-Corrosion Resistant)
• Lubrication: Grease fitting (Alemite 1877)
• Features: Self-aligning construction, lightweight aluminum housing, low-friction operation, engineered polymer retainers, reduced noise, high-speed capability, and precision recirculating ball bearing technology.

Common Replacements:

• Thomson SPB8-CR
• Thomson SPB8-NBA
• Thomson SPB8-CRDP