Thomson®
TWN4

The Super Ball Bushing® bearing has been the industry standard for self-aligning linear bearings for over twenty years. This bearing provides three times the load capacity or 27 times the travel life of conventional linear bearings. Besides the dramatic increase in load capacity, the Super Ball Bushing® bearing is self-aligning, lightweight and adjustable with a low coefficient of friction. It is a quick and easy replacement for high friction plain bearings. The wear-resistant, engineered-polymer retainers and outer sleeves reduce inertia and noise in critical, high speed applications.

Thomson® Super Ball Bushing® Linear Bearing Pillow Block, Non-Adjustable Closed Twin, Series: TWN, 1/4 in Shaft Dia, 0.437 in Center Line to Base, 0.81 in Height, 1.63 in Length, 2-1/2 in Width, 120 lb Dynamic, Steel Bearing, 3 m/s Maximum, Oil Lubrication, 185 deg F

• A self-aligning capability up to 0.5 deg compensates for inaccuracies in base flatness or carriage machining
• RoundRail™ advantage combined with the self-aligning feature, eliminating the need for derating factors commonly required for linear guides
• Travel speeds up to 10 ft/s without a reduction in load capacity
• Lightweight, wear-resistant, engineered polymer retainers and outer sleeves that reduce inertia and noise
• Radially floating bearing plates when installed in an adjustable housing, the Super Ball Bushing® bearing may be adjusted to a specific diametrical fit-up for accurate and repeatable movement
• A constant coefficient of friction as low as 0.001
• The use of smaller, less expensive drive motors, belts, linkages, gears and ball screws, when replacing high friction plain bearings
• Greater ball to bearing plate contact provides the increase in three times load capacity or travel life
• Zero clearance fit
• Smooth, quiet operation
• Closed pillow blocks are for end supported shafting
• For class L shafting

• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Thomson_FNYBU06_Catalog.pdf