SBR20UU Open Linear Bearing Block for 20mm Supported Rail

The SBR20UU is an open-style linear bearing block for a nominal 20 mm round shaft with continuous support beneath it. The underside opening gives clearance for the rail’s support structure as the block moves along the shaft. It can be used in supported round-rail motion assemblies for CNC equipment, automation mechanisms and sliding platforms.

Key features

• Open linear bearing design for compatible 20 mm supported round-shaft rails
• Block-style housing with mounting points for attachment to a moving plate or carriage
• Suitable for straight-line travel when the rail and bearing are correctly aligned

Technical specifications

Dimensions and mounting details are typical published SBR-series references, not measurements of this exact inventory batch. Verify fit-sensitive dimensions before installation or machining.

Compatibility and installation

Choose the 20 mm version only for a compatible supported round-shaft rail. Unlike a closed linear bushing for an unsupported rod, this block has an opening underneath to pass over the continuous rail support. Check rail support clearance, mounting-hole spacing, shaft centre height and carriage clearance against your existing assembly. A matching nominal shaft diameter does not by itself guarantee a drop-in replacement.

Keep the shaft clean and aligned, mount the bearing block without forcing or twisting it, and test the full travel before applying working loads.

Package contents

1 × SBR20UU open linear bearing block.