Features

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• 360° Rotation Platform
• Micrometer Provides 2.4 arcmin Rotation per Division
• SM1-Threaded Center Hole Accepts Ø1" (Ø25.4 mm) Optics up to 0.67" (17 mm) Thick
• Load Capacity: 25 lb (11.4 kg) for Coarse Adjustment, 3.75 lb (1.7 kg) for Fine Adjustment
• One SM1RR Retaining Ring Included

The PR01(/M) Rotation Mount is a heavy-duty mount designed to precisely rotate optics, standard optomechanical assemblies, and segments of 30 mm cage systems. The mount is engraved with 1° graduations and includes a vernier scale that directly provides 5 arcmin resolution. It contains 1/4" (M6) counterbored mounting slots, as well as two 1/4"-20 (M6) taps for mounting in the vertical plane. For additional stability in vertical configurations, it can be attached to our CAM1 Right-Angle Bracket.

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PR01A Mounting Hole Pattern

• Provides Solid Mounting Surface for Prisms, Beamsplitters, Polarizers, and Other Optics
• Tapped Hole Array is Directly Compatible with Mini Translation Stages and Goniometers
• Contains Six Mounting Locations for Clamping Arms
• Four 4-40 Cap Screws Included

The PR01A(/M) Adapter Plate fastens to the top of the PR01(/M) Rotation Mount via four #4 counterbored holes. The imperial version contains twelve 2-56 taps, positioned to provide direct mechanical compatibility with our miniature translation stages and goniometers, while the metric version contains four 2-56 taps and eight M2 x 0.4 taps that serve the same function.

Alternatively, optics can be fixed on top of the adapter plate with our PM3(/M) or PM4(/M) Clamping Arms and rotated about the PR01's axis of rotation, as shown in the image at the top of the page. Six 6-32 (M4) taps are provided along the outer perimeter for the clamping arms. Four 8-32 (M4) taps are also included.

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• Provides Clamping Force for Our Mounts
• Stackable 6-32 (M4) Threads on Top and Bottom of Post
• PM3(/M): Holds Optics up to 0.97" (24.6 mm) Tall
• PM4(/M): Holds Optics up to 1.61" (40.9 mm) Tall

Thorlabs' PM3(/M) and PM4(/M) Clamping Arms use a nylon-tipped setscrew to secure objects in our mounts and V-clamps. The PM3(/M) provides vertical travel of up to 0.97" (24.6 mm) and features a 0.69" (17.5 mm) long clamping arm. In contrast, the PM4(/M) provides vertical travel of up to 1.61" (40.9 mm) and features a 1.16" (29.3 mm) long clamping arm.

The clamping arm is held to the post using a flexure mechanism that locks with a 5/64" (2 mm) balldriver or hex key. The post includes a Ø0.09" (Ø2.3 mm) through hole that provides added torque when tightening down the post.

The PM3(/M) clamping arm can be used to hold 1" (25.4 mm) tall optics with the addition of a second post. Without the second post, the top surface of the clamping arm will be positioned above the top of the post, causing less-than-full engagement of the flexure mechanism.

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• Continuously Rotate a 30 mm Cage Segment through 360°
• Accepts Preassembled Cage Segments; No Disassembly is Required
• Single-Screw Clamping Mechanism
• Four 4-40 Cap Screws Included

The CRA30 Cage Rotation Adapter connects a 30 mm cage segment to a PR01(/M) Rotation Stage, allowing the cage segment to be precisely aligned via the stage's micrometer. The adapter uses a single-screw clamping mechanism that simultaneously tightens around two cage rods in a 30 mm cage system. Preassembled cage segments can simply be dropped into the open clamp; it is not necessary to feed the cage rods through the adapter.