ZJS Top-Adjust Two-Axis Optical Mounts

ZJS mounts place an optic holder on a layered square adjustment frame for two-axis angular alignment. Six options comprise five plain-bore sizes—12.7, 20, 25.4, 30 and 50.8 mm—and a separate SM1 threaded interface. The threaded version should not be confused with the 25.4 mm plain-bore holder. Family drawings identify M4×0.25 side adjustment screws and a bottom M4 mounting hole. Retaining-ring and set-screw details vary across model images; accepted optic thickness, alignment precision and included hardware are not specified. English artwork is a family illustration.

Plain bores versus SM1

Dedicated images label ZJS-0.5, -20, -1.0, -30 and -2.0 at 12.7, 20, 25.4, 30 and 50.8 mm respectively. ZJS-S1.0 is explicitly shown with an SM1 internal thread. Choose by the actual optic outer diameter or lens-tube interface.

Optic retention

Small and medium plain-bore models picture circular retaining plates; the 2-inch model has a larger open frame, while the SM1 model uses a threaded interface. Family art also shows set-screw retention examples. Optic thickness and permissible contact force are not specified.

Adjustment and mounting

A side M4×0.25 fine-adjust screw and a bottom M4 threaded post hole are labeled. Motion per turn, angular travel, backlash and drift are absent from the source.

Supply and performance

A mounted optic and post appear in use illustrations. Confirm whether optics, posts and specific retaining rings are supplied with the selected SKU, along with any rated load.

Selection checklist

Choose plain-bore diameter or SM1 thread

Check optic thickness and retaining contact

Verify bottom M4 mounting clearance

Request alignment data and packing list

To be confirmed

Optic thickness, clamping force and included retainers

Angular travel, resolution, backlash and stability

Rated load, material and finish

Optic/post inclusion and quantity