Products Home / Optomechanical Components / Optical Rails / 50 mm Optical Rails / Mounting Brackets & Gusset Plates for 50 mm & 75 mm RailsMounting Brackets & Gusset Plates for 50 mm & 75 mm Rails
- Mount and Support Vertical 50 mm & 75 mm Construction Rails
- Right-Angle Brackets for Breadboard Mounting and Corners
- Gusset Plates for Elbows and T-Junctions
- X- and T-Brackets for 90° Positioning
XE50A90
Right-Angle Bracket
for 50 mm Rails
XE75GP6
Tee Gusset Plate for
50 and 75 mm Rails
XE50GP
Elbow Gusset Plate
for 50 mm Rails
XE75A90
Right-Angle Bracket
for 75 mm Rails
XET1L
Large T-Bracket for
50 mm and 75 mm Rails
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| 50 mm & 75 mm Construction Rail Accessories | ||||||
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| 50 mm Rails | 75 mm Rails | T-Nuts and Screws |
Right-Angle Mounting |
Mounting Feet | Rail Joiners | Channel Insert |
Features
- 90° Brackets for Breadboard Mounting and Rail Corners
- Gusset Plates Reinforce Elbows and Three-Way Junctions
- X- and T-Shaped Brackets Align Rails at 90°
- Compatible with 50 mm Square, 50 mm x 75 mm, or 75 mm Square Rails
These accessories enable vertical mounting of optical rails with 50 mm or 75 mm sides. The right-angle brackets can be used as rail corner mounts or for direct mounting to our breadboards and optical tables. Gusset plates are used to reinforce rail construction corners. The X- and T-shaped brackets align two rails at 90° to each other.
Thorlabs' accessories for assemblies made of 50 mm or 75 mm rails include T-nuts, low-profile channel screws, rail joiners, and a plastic channel insert for use as a dust cover, panel holder, or cable router.
| Posted Comments: | |
user
(posted 2024-04-27 14:07:21.69) I would be interested in a flat mounting flange plate, which through-bolts to the tapped threads in the ends of the extrusion, and offers clearance holes for through-bolting the extrusion to an optical table. cdolbashian
(posted 2024-05-06 01:39:47.0) Thank you for reaching out to us with this request. I have contacted you directly in order to understand the geometry you are seeking. |
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Figure G1.2 75 mm Square Rail Bolted to Optical Table Using XE75A90 Bracket
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Figure G1.1 50 mm Square Rail Bolted to Optical Table Using XE50A90 Bracket
- Brace 50 mm or 75 mm Rail Corners or Mount Rails Vertically
- One-Piece Aluminum Construction for Excellent Rigidity
- Universal Slot Spacing for Imperial and Metric Breadboard Compatibility
- 1.34" (34.0 mm) Long Slots For Use with 1/4"-20 (M6 x 1.0) Cap Screws and Washers
The XE50A90 and XE75A90 Right-Angle Brackets can be used to fasten 50 mm and 75 mm rails, respectively, to each other or to an optical table. Each bracket can be secured to an optical rail by screwing it to T-nuts (not included) inserted into the rail channels. The XE50A90 and XE75A90 brackets have two slots on each leg with 0.99" (25.2 mm) or 1.98" (50.4 mm) spacing, respectively, for compatibility with either imperial or metric breadboards. Either the XE50A90 or the XE75A90 bracket may be used with our 50 mm x 75 mm rails, depending on which side of the rail(s) the bracket is attached to.
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Figure G2.2 XE75GP3 Gusset Plate Connecting a 50 mm Rail to a 75 mm Rail
| Table G2.1 Compatibility | |||
|---|---|---|---|
| Item # | Rail 1 | Rail 2 | Recommended # of Nut & Screw Setsa |
| XE50GP2 | 25 mm | 50 mm | 5 |
| XE50GP | 50 mm | 8 | |
| XE75GP2 | 25 mm | 75 mm | 7 |
| XE75GP3 | 50 mm | 10 | |
| XE75GP | 75 mm | 12 | |
- Connect Two Rails at a 90° Elbow
- 1/8" (3.2 mm) Thick Anodized Aluminum
- For Use with Low-Profile 1/4"-20 (M6 x 1.0) Channel Screws and
T-Nuts (Sold Separately; See Table G2.1 for Details)
These gusset plates are used to create strong 90° elbows using our 25 mm, 50 mm, and 75 mm rails. They provide reinforcement similar to the right-angle brackets sold above but do not block the inner channels of the elbow joint, instead leaving them open for hardboard or plexiglass panels. Each gusset plate features mounting holes designed for use with low-profile 1/4"-20 (M6 x 1.0) channel screws (10 mm max length) and matched T-nuts (both sold separately). When attaching rails of different sizes, we recommend mounting the smaller rail using multiple holes along the base of the gusset plate to provide additional rigidity, if possible.
To assemble, insert the screws into the gusset plate and loosely thread them into nuts on the back. Then slide the nuts into the rail channels and align the rail ends. With the rails aligned, tighten the channel screws.
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Figure G3.2 XE75GP6 Gusset Plate Connecting a 50 mm Rail to a 75 mm Rail
| Table G3.1 Compatibility | |||
|---|---|---|---|
| Item # | End Rail(s) |
Center Rail |
Recommended # of Nut & Screw Setsa |
| XE50GP4 | 25 mm | 50 mm | 6 |
| XE50GP3 | 50 mm | 12 | |
| XE75GP5 | 25 mm | 75 mm | 8 |
| XE75GP6 | 50 mm | 14 | |
| XE75GP4 | 75 mm | 18 | |
- Connect Two or Three Rails in a Three-Way Junction
- 1/8" (3.2 mm) Thick Anodized Aluminum
- For Use with Low-Profile 1/4"-20 (M6 x 1.0) Channel Screws and
T-Nuts (Sold Separately; See Table G3.1 for Details)
These gusset plates are used to create strong three-way junctions using our 25 mm, 50 mm, and 75 mm rails. They provide reinforcement similar to the elbow gusset plates sold above but with additional mounting holes to form a tee. Each gusset plate features mounting holes designed for use with low-profile 1/4"-20 (M6 x 1.0) channel screws (10 mm max length) and matched T-nuts (both sold separately).
To assemble, insert the screws into the gusset plate and loosely thread them into nuts on the back. Then slide the nuts into the rail channels and align the rail ends. With the rails aligned, tighten the channel screws.
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Figure G4.1 An X-shaped bracket secures two 50 mm rails at 90°.
- Secure Two 50 mm or 75 mm Rails in a 90° Alignment
- Raised Guides fit in Rail Channels for Quick Alignment
- X and T Shapes for Precise Positioning
Thorlabs' X- and T-Shaped Brackets allow 50 mm or 75 mm Rails to be connected in 90° orientations.
Each bracket comes with four pre-installed M4 screws and T-nuts. To mount a bracket on an XE50 or XE75 series rail, first loosen the attached T-nuts until they can rotate freely. Then, insert the T-nuts on one side of the bracket into one of the rail channels. Ensure the T-nuts are rotated so that they will engage with the rail channels and the raised section of the bracket is sitting in the channel to ensure proper alignment. Tighten the M4 screws with a 1/8" (3 mm) hex key or ball driver to secure the bracket in place. Once the bracket is secured to the first rail, the procedure can be repeated for the second rail, using the raised section on the opposite face to align the second rail at 90° to the first.
The X-bracket can be used to position two rails perpendicularly along their length, while the T-bracket's design allows it to be used to position one rail perpendicularly at the end of a second rail, without the bracket extending beyond the setup.
These brackets may also be used for our 25 mm rails. Smaller X- and T-shaped brackets that are specifically designed to work with our 25 mm rails are also offered.
 Right-Angle Brackets & Plates |