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Circular Solid Aluminum Optical Breadboards, Double Density Holes


  • Through-Tapped 1/4"-20 or M6 Holes
  • Matte Black Anodized Finish Reduces Unwanted Reflections
  • Custom Sizes Available

MBR12

Ø12.00" Aluminum Breadboard

MBR6

Ø6.00" Circular Optical Breadboard
Mounted on AV2 Vibration-Absorbing Feet

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Diagram of the MBR6 Breadboard. For similar diagrams of the other circular breadboards, please see the Weights & Dims tab.
SpecificationImperial BoardsMetric Boards
Material Solid Aluminum Alloy
Finish Matte Black Anodized
Breadboard Thickness 0.5" 12.7 mm
Flatness ±0.006" over 1 ft2 ±0.15 mm over 0.3 m2
Anodization Thickness 0.00015" to 0.00020" 15 μm (Min)
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

Features

  • Imperial Sizes: Ø6.00" and Ø12.00"
  • Metric Sizes: Ø150.0 mm and Ø300.0 mm
  • Circular Geometry Saves Space
  • Same Hole Pattern as Our Double-Hole-Density Breadboards
  • Low-Reflection Anodized Surface

Thorlabs' circular, 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 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. To reduce reflections, these breadboards are finished with a black anodized coating.

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. For example, the photograph at the top of the page shows the MBR6 mounted on our AV2 vibration-absorbing feet.

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 these 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
MBR6  Ø6.00" x 0.50" 0.56 1.23 0.57 1.26
MBR12  Ø12.00" x 0.50" 2.34 5.16 2.59 5.71
MBR150/M  Ø150.0 mm x 12.7 mm 0.56 1.23 0.57 1.26
MBR300/M  Ø300.0 mm x 12.7 mm 2.27 5.00 2.66 5.86
  • These weights are approximate and are subject to change. The information is only to be used as a guideline.

Below are diagrams calling out the dimensions on each breadboard. Please note that the breadboards are not shown proportional to one other.


Posted Comments:
bucinelr  (posted 2018-09-14 14:46:01.08)
Why do you put metric holes (M6) in a breadboard with imperial spacing (1/4in). When I purchased the breadboard (that took 6 weeks to get here) I assumed that with metric holes it would have metric spancing.
AManickavasagam  (posted 2018-09-19 04:05:59.0)
Response from Arunthathi @ Thorlabs: Apologies for the issue you have with the item received and the inconvenience this has caused. The holes and spacing in all our breadboards should match (i.e. Metric for Metric and vice-versa) We will contact you directly to send you a replacement asap.

Solid Aluminum Circular Breadboards, Double Density (Imperial)

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
MBR6 Support Documentation
MBR6Aluminum Breadboard, Ø6.00" x 0.50", 1/4"-20 Double-Density Taps
$129.22
Today
MBR12 Support Documentation
MBR12Aluminum Breadboard, Ø12.00" x 0.50", 1/4"-20 Double-Density Taps
$246.89
Today

Solid Aluminum Circular Breadboards, Double Density (Metric)

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available
MBR150/M Support Documentation
MBR150/MAluminum Breadboard, Ø150.0 mm x 12.7 mm, M6 Double-Density Taps
$129.22
Lead Time
MBR300/M Support Documentation
MBR300/MAluminum Breadboard, Ø300.0 mm x 12.7 mm, M6 Double-Density Taps
$246.89
Lead Time
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