Unanodized, Circular, Solid Aluminum Optical Breadboards, Double Density Holes
![](https://www.thorlabs.us/Images/GuideImages/7962_UnAnodizedCircularMB_3.jpg)
- Unanodized Finish for Use in Vacuum Applications
- Acid Etched and Vacuum Sealed for Immediate Use
- Through-Tapped Mounting Holes
- Custom Sizes Available
MBR12U
Ø12.00" Aluminum Breadboard
Counterbored Ø1/4"
(M6) Mounting Holes
MBR6U
Ø5.87" Aluminum Breadboard
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Diagram of the MBR6U Breadboard. For similar diagrams of the other circular breadboards, please see the Weights & Dims tab.
Specification | Imperial Boards | Metric Boards |
---|---|---|
Material | C250 Aluminum | |
Finish | Precision Ground, Matte Finish | |
Cleaning and Packing | Acid Etched and Vacuum Sealed | |
Size | Ø5.87" and Ø12" | Ø149 mm and Ø300 mm |
Breadboard Thickness | 0.5" | 12.7 mm |
Flatness | ±0.006" over 1 ft2 | ±0.15 mm over 0.09 m2 |
Holes | 1/4"-20 Taps | M6 Taps |
Hole Spacing | 1" Centers Double Density Pattern |
25 mm Centers Double Density Pattern |
Counterbores | Four 1/4" Holes | Four M6 Holes |
Vacuum Compatibility as Packaged |
10-6 Torr | |
Preparation and Packaging | Chemically Cleaned and Vacuum Bagged |
Features
- Precision Manufactured Unanodized Surface for Vacuum Applications
- Acid Etched and Vacuum Sealed for Immediate Use
- Electrically Conductive for Applications Requiring a Common Ground
- Counterbored Mounting Holes for Attaching to an Optical Table or Breadboard Feet
- Circular Geometry Saves Space
- Same Hole Pattern as Our Double-Hole-Density Breadboards
Thorlabs' circular, unanodized, double-density breadboards are constructed from a 1/2" (12.7 mm) thick aluminum plate; this thickness is sufficient to maintain flatness over the full area (see the table to the right for flatness specifications). These nonmagnetic breadboards feature 1/4"-20 (M6) tapped holes at twice the density of our standard 1" (25 mm) hole pattern to provide a convenient platform for assembling prototype optical assemblies, conducting experiments, and mounting small subsystems. Please see the Weights & Dims tab for breadboard diagrams that call out the hole spacings.
Each breadboard offers four 1/4" (M6) counterbored mounting holes for attaching the breadboard to an optical table, another breadboard, mounting posts, brackets, breadboard feet, or other surfaces and mounts.
Vacuum Compatibility Information
These vacuum-compatible breadboards are chemically cleaned and prepared for vacuum applications before packaging. They are compatible directly out of the packaging with vacuum environments down to 10
Thorlabs also offers rectangular double-hole-density optical breadboards, as well as rectangular standard-hole-density breadboards and unanodized, vacuum-compatible breadboards. Custom sizes of all breadboards are also available. Please contact Tech Support for more information.
Item # | Dimensions | Unpackaged | Packaged Shipping | ||
---|---|---|---|---|---|
Mass (kg) | Weight (lb) | Mass (kg)a | Weight (lb)a | ||
MBR6U | Ø6.00" x 0.50" | 0.56 | 1.23 | 0.57 | 1.26 |
MBR12U | Ø12.00" x 0.50" | 2.34 | 5.16 | 2.59 | 5.71 |
MBR150U/M | Ø150.0 mm x 12.7 mm | 0.56 | 1.23 | 0.57 | 1.26 |
MBR300U/M | Ø300.0 mm x 12.7 mm | 2.27 | 5.00 | 2.66 | 5.86 |
Below are diagrams calling out the dimensions on each breadboard. Please note that the breadboards are not shown proportionally to one other.
Posted Comments: | |
j.travers
 (posted 2016-08-02 14:32:04.22) Do you do custom sizes? I'm looking for a diameter of around 200 mm to 250 mm, with metric mounting holes. bwood
 (posted 2016-08-03 04:17:32.0) Response from Ben at Thorlabs: Thank you for your question. I am pleased to say we have a wide array of custom capabilities within our breadboard ranges, including these circular, anodised breadboards. Once you have finalised the specifications of your required breadboard, please contact your local Thorlabs technical support office to being the quoting process. |