Post Mountable V-Clamps

This V-clamp is ideal for applications that require the positioning of short, small diameter cylindrical components ranging from Ø1/32" (0.8 mm) to Ø3/8" (9.5 mm). The VH1 measures just 0.42" (10.7 mm) from front to back, a compact design that allows close access to both ends of a cylindrically shaped optic fastened within the mount. Cylindrical objects are clamped in place via a nylon tipped set screw housed in an adjustable height arm.

The VC1(/M) Small V-Clamp is ideally suited for small cylindrical objects such as our Fiber Collimation Packages. Cylindrical objects are clamped in place via a PM3(/M) Clamping Arm (One included with each mount) complete with a flexure locking mechanism and nylon-tipped set screw.

The VC3(/M) Large V-Clamp is designed for large cylindrical objects such as our Tube Lasers. Cylindrical objects are clamped in place via a PM4(/M) Clamping Arm (one included with each mount) complete with a flexure locking mechanism and nylon-tipped set screw. For extra clamping support two additional (three total) 6-32 (M4) tapped holes have been added for extra PM4 clamping arms (available below).

• 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.