SBR Supported Linear Rails and Ball Bearings


Overview
GMT SBR20 and SBR30 supported linear rails and ball bearing blocks are perfect for building professional quality CNC routers, CNC plasma cutters, positioning systems, gantry robots, and other automated applications.

Compared to unsupported round rails, SBR rails provide drastically enhanced rigidity and resistance to deflection. They are also easier to install and are less prone to binding than rectangular-profile linear motion guides when they are mounted to surfaces that have not been precision machined, such as aluminum extrusions, steel tubes, and unsurfaced steel/aluminum plates.

Rails and bearings conform to standard "SBR" metric dimensions and specifications, allowing them to be used in both new applications as well as existing installations.

[ View Specs & Dimensions ]

Constuction
  • 1045 steel rails case-hardened to 60HRC
  • Extruded aluminum T-supports and blocks
  • Extruded aluminum blocks with tapped holes
  • SBR20: 4-row circulating ball bearings
  • SBR30: 5-row circulating ball bearings
  • Rubber seals

LOW COST SHIPPING - $9.99 flat rate, unlimited qty in the lower 48 states.
SBR20-BLOCK 20mm Linear Ball Bearing Block $34.99  $12.99 [ Add to Cart ]
SBR30-BLOCK 30mm Linear Ball Bearing Block $69.99  $19.99 [ Add to Cart ]
SBR20-340 20mm x 340mm Supported Linear Rail $44.99  $19.99 [ Add to Cart ]
SBR20-640 20mm x 640mm Supported Linear Rail $69.99  $29.99 [ Add to Cart ]
SBR20-940 20mm x 940mm Supported Linear Rail $99.99  $44.99 [ Add to Cart ]
SBR30-1250 30mm x 1250mm Supported Linear Rail $189.99  $89.99 [ Add to Cart ]
SBR30-1800 30mm x 1800mm Supported Linear Rail $249.99  $129.99 [ Add to Cart ]

SBR20 Specs & Dimensions SBR30 Specs & Dimensions
Rail Diameter: 20mm Rail Diameter: 30mm
Static Load Rating: 375 lbs force per block Static Load Rating: 680 lbs force per block
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