The KR VisionFrame 35 Super Knuckle 8 cm (3 in) puts a camera, light, sensor, or monitor out on a freestanding 35 mm post frame, with fast freehand positioning for inspection scenes too large for a VisionGrid tabletop.

It mounts to a vertical 35 mm VisionFrame post with a Super Convi clamp - the jaw grips the post and the hex receiver locks the arm's 5/8" (16 mm) stud with a spring-safety catch - then gives you a quick-adjust Super Knuckle arm to aim the device, ending in a standard ¼"-20 screw.

The Super Knuckle is a double ball-and-socket arm with a single central knob: loosen it and both joints swing freely to any angle, tighten it and the whole arm locks at once. The friction ball joints glide smoothly, so you find a position fast by hand. At 8 cm (3 in) it is the shortest Knuckle in the family - the strongest and steadiest of the Super Knuckle lengths, the first choice when the device can stay close to the post.

VisionFrame 35 is a larger prototyping and integration frame - the route for testing bigger camera-to-product geometry, taller camera positions, and multi-camera layouts before the final machine is built. The camera, light, sensor, adapter plate, and cable management are chosen separately, so you build the exact setup your scene needs.

When the inspection scene is too big for a tabletop - taller camera positions, more camera-to-product distance, a larger sample, or a conveyor-style mockup - VisionFrame 35 gives you a freestanding 35 mm post frame to build on. Clamps slide up and down the post, so you can move a camera or light to a new height without cutting a custom frame.

This is a prototyping and integration frame, not a production station. An integrator uses it to stand up larger geometry fast, prove the inspection, and show a customer. Once the layout is locked, the production path becomes a VisionCell inspection cell, a SightLink E3040 retrofit onto a real machine frame, or a custom engineered fixture.

This kit is the middle link of the chain - a Super Convi clamp grips your 35 mm VisionFrame post and the arm carries your device's ¼"-20 thread, clamp and arm included:

¼"-20 is the common camera/accessory thread. "Male" means this kit provides the screw; your device or adapter plate needs the matching female thread. If the image must stay level and can't twist on a single screw, add a locating pin or anti-rotation plate.

Choose Super Knuckle when you want fast, freehand positioning - its friction ball joints glide smoothly to any angle and lock with a single central knob, so you set a position by hand in seconds. Choose Omni when you want a repeatable, locked angle - its anti-slip rosettes index to a set tooth position and return to it, so a camera holds the angle you set. They simply hold differently: the Super Knuckle for quick, free movement, the Omni for an exact, repeatable angle.

This Super Knuckle reaches 8 cm (3 in) and carries up to 5 kg / 11 lb close to the clamp - the strongest and steadiest Super Knuckle length - derating toward the tip. It is friction-held with a single knob - fast and freehand, but with no indexed angle return, so re-aim by eye after a bump; it is a positioning tool, not a production mount.

• Reach: 8 cm (3 in) nominal.
• Close-in working load: up to 5 kg / 11 lb - the highest of any Super Knuckle length.
• Best for: cameras, lights, sensors, monitors, and accessory plates positioned quickly by hand, close to the post.

Start with the shortest arm that reaches the target. The shorter Knuckle is cheaper, carries more load, and holds steadier - every extra inch of reach costs you payload capacity and stability. The 5 kg figure is a close-in reference for the arm; usable load still depends on payload position, mounting angle, vibration, and cable pull. Secure the cable to the post before judging stability - cable drag can shift a camera even within the load range.

Use the Super Knuckle 8 cm (3 in) when you want to set a close-in position fast by hand:

• Quick camera or light aiming on a VisionFrame 35 prototype scene.
• Close-in positions where the device can stay near the post.
• Freehand setup and teardown during demos and trials.
• Camera-plus-light layouts where speed of adjustment matters more than indexed return.
• Cable-managed setups within the arm's load range.

The kit ships as three parts - the Super Convi clamp, the 8 cm (3 in) Super Knuckle arm, and the ¼"-20 male device screw - and nothing else; the 35 mm post and the device are separate.

• Super Convi clamp (ratcheted handle) for a vertical 35 mm post - jaw fits 12-51 mm bar, hex receiver with spring-lock safety.
• Super Knuckle 8 cm (3 in) adjustable arm.
• ¼"-20 male device screw.

Not included unless bundled: the VisionFrame 35 post or frame; the camera, lens, light, sensor, monitor, or controller; a camera-specific adapter plate; and cable strain-relief hardware.

Before ordering, confirm a 35 mm VisionFrame post, a ¼"-20 female device thread, payload and cable pull suited to an 8 cm (3 in) reach, and a reviewed path if the setup is vibration-prone or production-bound.

• Confirm you have (or are buying) a 35 mm VisionFrame post for the clamp to grip - this mount is not for 16 mm VisionGrid rail, 22 mm VisionGrid tube, or 3030 / 4040 extrusion.
• Your device needs a ¼"-20 female thread, or an adapter plate that gives it one.
• Check that payload weight, center of gravity, and cable pull suit the 8 cm (3 in) reach.
• Weight or secure the post base, and re-check the clamp's grip on the post after loading - a tall freestanding frame can sway, and a clamp can creep down the post under load or vibration.
• For a released production line - not a prototype - use VisionCell, a SightLink E3040 retrofit, or a custom fixture.