Sony
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Kupo
Kupo Super Knuckle Ball KG074311 3/8in Screw Locating Pin 17 LB
CNC aluminium ball with 3/8in-16 screw and Arri locating pins prevents equipment rotation on camera cages, tightened by thumb screw or Allen key
- TypeDigital Camera Accessory Kits
- Prevents gear rotation with 3/8in-16 screw and Arri locating pins
- CNC-machined aluminium ball delivers rigid mounting for cinema rigs
- Thumb screw enables fast hand-tight locking on set
- Accepts #3 Allen key for extra torque when needed
- Compatible across the Super Knuckle accessory system
Kupo Super Knuckle Ball KG074311
This CNC-machined aluminium ball joins camera cages and handles using a 3/8in-16 screw and Arri locating pins. It is designed for video and cinema professionals who need a secure, anti-rotation mounting point within the Super Knuckle system. The thumb screw allows rapid hand tightening for quick rig changes on set. A #3 Allen key can also be used for additional torque when required.
Thermals noise and power
As a passive mechanical accessory, the ball generates no heat, produces no audible noise and draws zero electrical power during operation. Its solid aluminium construction requires no cooling or external energy source. Performance is entirely mechanical and unaffected by temperature or ambient sound levels.
17 LB load capacity
The assembly is rated to support 17 LB of equipment weight when properly secured. Builds exceeding this limit should use a different mounting solution. The locating pins prevent rotational drift but do not increase the stated load rating.
Highlights
- Prevents gear rotation with 3/8in-16 screw and Arri locating pins
- CNC-machined aluminium ball delivers rigid mounting for cinema rigs
- Thumb screw enables fast hand-tight locking on set
- Accepts #3 Allen key for extra torque when needed
- Compatible across the Super Knuckle accessory system
Specifications
| Brand | Kupo |
|---|---|
| Model | KG074311 |
| Type | Digital Camera Accessory Kits |
Questions about this item
How do I install the Kupo Super Knuckle Ball KG074311 on a cage, and which step is often missed?
Thread the 3/8in-16 screw into the cage, engage the Arri locating pins to stop rotation, then tighten the knurled thumb screw by hand; the step often missed is fully seating both locating pins before locking the ball.
What maintenance or replacement will the Kupo Super Knuckle Ball KG074311 need over time?
Periodically check the thumb screw and #3 Allen key socket for wear; if the knurled knob or internal threads strip, replace the entire ball unit as no internal parts are user-serviceable.
What is the first limit reached when the Kupo Super Knuckle Ball KG074311 is under sustained 17 LB load?
The 17 LB load rating is the primary limit; exceeding it risks deformation of the CNC aluminum ball or slippage at the 3/8in-16 screw and locating pin interface.
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