Thomson SSUPBO8 Linear Guide Round Shaft Pillow Block

Description:

The Thomson SSUPBO8 Linear Guide Round Shaft Pillow Block is used in precision linear motion systems to provide smooth, self-aligning linear motion on 0.500-inch (1/2-inch) continuously supported round shafts. Commonly installed in CNC machines, industrial automation equipment, robotics, packaging machinery, semiconductor equipment, and material handling systems, this open-style pillow block features a Super Smart Ball Bushing®, adjustable preload, aluminum housing, and integral double-acting seals for high-performance linear guidance. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of supported round shaft linear guide systems.

Applications:

The Thomson SSUPBO8 is designed for continuously supported Class L round shaft applications where precise positioning, high load capacity, low-friction travel, and automatic self-alignment are essential. It is widely used in CNC routers, automated assembly equipment, robotics, semiconductor manufacturing, packaging machinery, inspection systems, medical equipment, and custom OEM automation requiring rigid shaft support and accurate linear motion.

Technical Specifications:

• Manufacturer: Thomson Industries
• Manufacturer Part Number (MPN): SSUPBO8
• Product Type: Linear Guide Round Shaft Pillow Block
• Series: Super Smart Ball Bushing® (SSUPBO)
• Bearing Style: Open
• Bearing Configuration: Single Pillow Block
• Housing Material: Aluminum Alloy
• Bearing Type: Super Smart Ball Bushing® Linear Bearing
• Adjustable: Yes
• Self-Aligning: Yes
• Nominal Bore (ID): 0.500 in (12.70 mm)
• Compatible Shaft Class: Class L Continuously Supported Shafting
• Overall Width (A): 2.000 in (50.80 mm)
• Overall Length (B): 1.500 in (38.10 mm)
• Center Shaft Height (H): 0.687 in (17.45 mm)
• Overall Height (H1): 1.130 in (28.70 mm)
• Mounting Hole Spacing (E1): 1.688 in (42.88 mm)
• Secondary Hole Spacing (E2): 1.000 in (25.40 mm)
• Edge Distance (E): 0.310 in (7.87 mm)
• Base Thickness (F1): 0.250 in (6.35 mm)
• Housing Width (G): 0.500 in (12.70 mm)
• Housing Height (G1): 0.890 in (22.61 mm)
• Mounting Hole Diameter (N): 0.160 in (4.06 mm)
• Lubrication Fitting: 1/8 in Alemite 1877
• Dynamic Load Capacity: 360 lbf (1,601 N)
• Maximum Operating Temperature: 85°C (185°F)
• Weight: 0.23 lb (0.104 kg)
• Roll Pack: No
• Food Grade Rated: No
• Corrosion Resistance: Standard (Not Corrosion Resistant)
• Features: Open bearing design for supported shafts, patented Super Smart Ball Bushing® technology, adjustable preload, universal self-alignment, integral double-acting seals, smooth low-friction operation, high rigidity, quiet performance, and extended service life. 

Common Replacements:

• Thomson SSUPBO8-CR
• Thomson SSUPBO8-DP
• Thomson SSUPBO8-NBA