SBR12UU Linear Bearing Expand

Linear Bearing Pillow Block Open - SBR12UU - 12mm Diameter



The SBR12UU is used in the design of linear motion products such as CNC mills, lathes or routers. It has excellent performance under high loads and used with 12mm linear shafting or rails.

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If you are making a CNC router, mill or lathe requiring precise linear motion, this SBR12UU 12mm linear bearing housed within a durable aluminium pillow block mount is the perfect solution. The aluminium housing block is 39mm x 36mm in dimension and has four M5 CNC drilled, tapped, and countersunk holes, allowing you to easily and securely mount it to nearly anything. This SBR12UU unit comprises of an aluminium housing and an LM12UU-OP linear bearing held in place with two circlips. There are also two rubber seals on either end to prevent debris or contamination of the ball bearings. The bottom of the block and bearing are open, allowing use with very popular 12mm rails.

Advantages over bushings include less slop or friction, which results in less wear over time and better machining results.

A typical CNC system will comprise of a 12mm linear shaft or rail, mounted on either end by two end supports, with this SBR12UU running along the shaft. Most CNC machines have two of these assemblies mounted side by side, using the SBR12UU bearing blocks as mounts to support a moving platform. If you want precision and as little play as possible, we've got you covered with this bearing block assembly. 


SBR12UU Linear Bearing Pillow Block Open  -  Technical Specifications:

  • Model


  • Linear Bearing


  • Housing Block Material

- Aluminium

  • Dynamic Load Rating

- 420 N

  • Static Load Rating

- 610 N

  • Block Dimensions

- 39 x 41 x 28mm

  • Inside Diameter

- 12mm

  • Mounting Hole Diameter

- M5

  • Mounting Hole Distance

- 26 x 28mm

  • Compatibility

- 12mm Linear Shaft or Rail

  • Mass

- 87.4 g

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Linear Bearing Pillow Block Open - SBR12UU - 12mm Diameter

Linear Bearing Pillow Block Open - SBR12UU - 12mm Diameter