Right-Angle Mounting Adapters for Breadboards

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VB01 Holding an MB1224 Breadboard

• Mount Large Breadboards at a 90° Angle
• One-Piece Construction for Excellent Rigidity
• Parallel and Perpendicular Within 0.003" (0.07 mm)
• 6", 11.75", or 18" Brackets Available
• Each Bracket Sold Individually

These Vertical Brackets are designed to mount any of our aluminum breadboards vertically on an optical table. The edges contain 1/4" (M6) clearance holes and 1/4"-20 (M6) tapped holes at regular spacings, providing a high degree of mounting flexibility. The VB01A(/M) has three 1/4"-20 (M6) tapped holes along the 45° edge for additional mounting options. 6", 11.75", and 18" tall brackets are available.

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Two AP90RL Brackets Connected by an Arched Slot

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AP90RL Holding MB12 Breadboard Vertically

• Large Mounting Surface with Tapped Holes on Front, Sides, and Top
• Two Arched Slots for Rotating Base by up to ±50°
• One-Piece Aluminum Construction for Excellent Rigidity
• Parallel and Perpendicular to Within 0.002" (0.05 mm)
• Physical Dimensions: 5.00" x 3.40" x 7.00" (127.0 mm x 86.4 mm x 177.8 mm)

The AP90RL(/M) Large Angle Bracket is a heavy-duty component ideal for mounting breadboards and other bulky optomechanics at right angles to an optical table. The front, sides, and top contain a generous array of 1/4"-20 (M6) tapped holes and clearance holes, and the front additionally provides two parallel 2.40" (61 mm) long clearance slots. The base contains two 1/4"-20 (M6) clearance slots and five clearance holes, as well as two arched 1/4"-20 (M6) slots that provide continuous rotation of ±50° prior to fastening the bracket down.

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AP90L with MB636 Breadboard

• One-Piece Aluminum Construction for Excellent Rigidity
• Angled Rear Support Structure Reinforces Mounted Optomechanics
• Parallel and Perpendicular to Within 0.002" (0.05 mm)
• Physical Dimensions:
  • AP90(/M): 2.88" x 2.50" x 3.00" (73.2 mm x 63.5 mm x 76.2 mm)
  • AP90L(/M): 8.80" x 2.50" x 3.00" (223.5 mm x 63.5 mm x 76.2 mm)

The AP90(/M) Right-Angle Plate is an ideal solution for building sturdy three-dimensional optomechanical assemblies that require vertical positioning. This plate provides four 1/4"-20 (M6) clearance slots, seven 1/4"-20 (M6) tapped holes, and two 1/4"-20 (M6) counterbores oriented at 90° from the optical table surface. Its base contains two 1.30" (34 mm) long, 1/4"-20 (M6) clearance slots and two 1/4"-20 (M6) counterbores for mounting to an optical table.

Our AP90L(/M) Large Right-Angle Plate is a heavy-duty mount, capable of holding breadboards at 90° relative to an optical table's surface. This plate provides a generous array of 31 1/4"-20 (M6) tapped holes and six 1/4"-20 (M6) counterbores oriented at 90° from the optical table surface. Its base contains three 1/4"-20 (M6) clearance slots and six 1/4"-20 (M6) counterbored holes for mounting to an optical table.

For an alternative 90° mounting option, the top plate on our AP180 Adjustable Angle Plate can be positioned to provide mounting configurations similar to the AP90. Thorlabs also offers 45° and 30°/60° mounting plates.

Product Image (Click to Enlarge)
Item #	AB90	AB90A(/M)	AB90B(/M)a	AB90C(/M)
Counterbored Mounting Slots	Two 1/4" (M6) Slots	Two 1/4" (M6) Slots	N/A	One 1/4" (M6) Slot
Counterbored Mounting Holes	N/A	N/A	Two 1/4" (M6) Holes	N/A
Tapped Holes	None	Six 1/4"-20 (M6) Holes per Side	Two 1/4"-20 (M6) Holes per Side	Three 1/4"-20 (M6) Holes on One Side
Dimensions (L x W x H) [Click for Mechanical Drawing]	2.00" x 1.50" x 2.00" (50.8 mm x 38.1 mm x 50.8 mm)	2.00" x 1.50" x 2.00" (50.8 mm x 38.1 mm x 50.8 mm)	2.00" x 0.75" x 2.00" (50.8 mm x 19.1 mm x 50.8 mm)	2.00" x 0.75" x 2.00" (50.8 mm x 19.1 mm x 50.8 mm)

• Please note that both counterbores are located 1.18" from the base of the bracket. On our breadboards, the first row of tapped through holes is located 0.50" from the edge. Thus, when mounting a breadboard with this bracket, the breadboard will rise approximately 0.68" above the base of the bracket.

• One-Piece Aluminum Construction for Excellent Rigidity
• Angled Rear Support Structure Reinforces Mounted Optomechanics
• Parallel and Perpendicular to Within 0.02" (0.05 mm)

Our MSAP90(/M) Mini-Series Right-Angle Plate, based upon our popular AP90 Right-Angle Plate design, is an ideal solution for constructing rigid three-dimensional assemblies with our Mini-Series components. This bracket provides four 4-40 (M3) clearance slots, seven 4-40 (M3) tapped holes, and two 4-40 (M3) counterbores oriented at 90° from an optical table surface. Its base contains two 1.0" (25.4 mm) long, 4-40 (M3) clearance slots and two 4-40 (M3) counterbores for mounting to a Mini-Series Breadboard.