SBR12UU Open Linear Bearing Block for 12mm Supported Rail

Weight	0.085 kg
Size	8 mm
Material	Aluminium

The SBR12UU is an open linear bearing block designed to travel along a supported 12 mm round shaft.
• Model and fit: SBR12UU, nominal 12 mm shaft diameter.
• Rail type: for compatible supported round-shaft rail assemblies.
• Mounting: block housing with threaded mounting points.
• Reference size: 39 × 40 × 27.6 mm (L × W × H).
• Quantity: one bearing block.

SKU: 26-11586 Category: Linear Bearings

$3.57

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Description

The SBR12UU is an open-style linear bearing block for a nominal 12 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 12 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

Model	SBR12UU
Nominal shaft diameter	12 mm
Bearing style	Open bearing block for supported round shaft
Reference overall length	39 mm
Reference overall width	40 mm
Reference overall height	27.6 mm
Reference mounting-hole spacing	28 × 26 mm
Typical mounting thread	M5
Quantity	1 bearing block

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 12 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.