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Ø1/2" Post Construction Accessories![]()
RA90RS Mounts Ø1" to RA180 Right-Angle End Clamp RA90 Mounts Two Ø1/2" Posts at a Fixed 90° Angle Application Idea Use the PJ301 Mounting Joist to mount two mirrors in KM100 Mirror Mounts on a Ø1" post. Related Items ![]() Please Wait
Features
Thorlabs' Angle Clamps and Mounting Joists are construction accessories that offer space-saving mounting solutions. Our angle clamps give the user the ability to orient our Ø1/2" posts in multiple directions and provide rigid, stable, and compact structures that can meet many laboratory needs. The double-bored mounting holes ensure two lines of stable contact, while the aluminum thumbscrews securely fasten the posts in place. For added convenience, many of the angle clamps are also sold in packs of 5. For compatibility with mini-series constructions and cage systems, Thorlabs' offers angle clamps that allow a Ø6 mm post to be mounted to a Ø1/2" post. These angle clamps are available with a fixed right-angle or continuous 360° rotation. Additionally, a fixed right-angle post clamp is also available for mounting a Ø1/2" post to a Ø1" post. Thorlabs' Mounting Joists can be used to mount multiple optical elements close together, which alleviates the need for multiple posts and post holders. These versatile joists, compatible with Ø1/2" and Ø1" posts, can also offset a post from the mounted optic in order to squeeze the optic into tight areas. The two joist designs provide adaptable laboratory solutions to crowded table problems. Our PMTR(/M) Component Clamp can be used to secure prisms, cylindrical components, and other devices. The clamp mounts to our Ø1/2" posts using a stable double bore and offers five 1/4"-20 (M6) tapped holes. It can also be used as a mounting joist for optical mounts. For mounting prisms and cylindrical objects with a small footprint, Thorlabs also offers Ø1/2" post-compatible fixed compact mounts.
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Thorlabs' Angle Clamps securely fasten our Ø1/2" posts at a variety of angles to one another. In addition to the fixed angle options, we also offer a variant for 360° continuous adjustment (Item # SWC). The holes of these clamps are double bored to provide two lines of stable contact. The RA180(/M) has one double-bored hole and a 1/4"-20 (M6) threaded stud on the bottom, which allows this clamp to be directly threaded onto a post. The RA360(/M) has two double-bored holes allowing two posts to be mounted parallel to each other. The RA360(/M) also features a #8 (M4) counterbore allowing the parallel posts to be mounted horizontally to the top of another post. The 3/16" (5 mm) hex thumbscrews located at either side of each clamp secure the Ø1/2" posts in place once the desired position is achieved. For added convenience, many of these clamps are also sold in packs of 5. ![]() ![]() Click to Enlarge A Ø6 mm Post Mounted Perpendicularly to a Ø1/2" Post Using the RA90TR Clamp ![]() Click to Enlarge A Ø6 mm Post Mounted to a Ø1/2" Post With Continuous 360° Rotation Using the MSWCA Clamp
Thorlabs’ Ø1/2" to Ø6 mm angle post clamps are used to integrate Ø1/2" posts into mini-series constructions or cage system assemblies. These clamps are available as a fixed right-angle, for perpendicular mounting, or with continuous 360° angle adjustment. Individual locking mechanisms for each post, as well as the rotation angle, allow for independent adjustment of each component. The MSWCA(/M) clamp allows a Ø6 mm cage rod or mini-series post to be mounted to a Ø1/2" post with 360° continuous adjustment. The clamp features witness lines marked every 45°, as well as a 3/16" (5 mm) hex thumbscrew to secure the swivel angle. Two additional 3/16" (5 mm) hex thumbscrews are used to secure the posts into place. The center-to-center distance between the two posts is 0.62" (15.7 mm). The RA90TR(/M) clamp allows a Ø6 mm cage rod or mini-series post to be mounted perpendicularly to a Ø1/2" post. The design combines a highly stable clamp flexure lock for holding the Ø6 mm post that is secured using a 5/64" (2 mm) balldriver. A 3/16" (5mm) thumbscrew locking mechanism is used for attaching the clamp to the Ø1/2" post. The center-to-center distance between the two posts is 1/2" (12.7 mm). ![]()
The RA90RS(/M) clamp allows a Ø1/2" post to be mounted perpendicularly to a Ø1" (25.0 mm) post. The design combines a highly stable clamp flexure lock that is secured using a 3/16" or 5 mm balldriver with a thumbscrew locking mechanism to provide a solution that enables a Ø1/2" post to be mounted perpendicular to a Ø1" (Ø25.0 mm) post. The thumbscrew can be tightened with a torque of up to 50 in-lbs (5.65 N·m). The center-to-center distance between the two posts is 1" for the imperial version and 25.0 mm for the metric version. ![]() ![]() Click to Enlarge PJ302 Post Joint Mounting a Mirror in a Position Offset from the Center of a Ø1" Post ![]() Click to Enlarge PJ301 Post Joist Mounting Two Lenses About the Center of a Ø1/2" Post
Thorlabs’ Mounting Joists provide valuable space-saving mounting options that are ideal for crowded optical tables or breadboards. These mounts are compatible with our Ø1/2” and Ø1” posts and allow multiple optics to be mounted close together on a single joist, eliminating the need for multiple posts and post holders. The PJ301(/M) enables centered mounting in which optics can be placed on both sides of the post center. It features a centered #8 (M4) counterbore for post mounting and two #8 (M4) counterbored slots for mounting optomechanical components. This joist allows an optic to be offset by 0.40" - 1.40" (10.16 mm - 35.56 mm) from the post center. The PJ302(/M) enables offset mounting in which optics can be mounted to one side of the post center. It features two #8 (M4) counterbored slots with opposite orientations, one for post mounting and one for mounting optomechanical components. This joist allows an optic to be offset by 0.40" - 2.70" (10.16 mm - 68.58 mm) from the post center. Please note that imperial nuts only fit the imperial joists and metric nuts only fit the metric joists. Nuts are included with the these joists. ![]()
The PMTR(/M) Component Clamp can be used to secure prisms, cylindrical components, and other devices. The clamp mounts to our Ø1/2" Posts using a stable double bore and offers five 1/4"-20 (M6) tapped holes. Components are secured using the included 1/4"-20 (M6) nylon-tipped setscrew with 1/8" (3.0 mm) hex. The closest tap is 1" (25.0 mm) from the center of the Ø1/2" post and the farthest tap is 2" (50.0 mm) away. Two of the the taps are orthogonal to the post for side-mounting components. Cylindrical components up to 3" (76.2 mm) in diameter may be held in place in a V-mount using the PMTR(/M) Clamp, as shown in the second photo to the right. | |||||||||||||||||
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