Product Description:

Beckhoff's C9900-M761 belongs to the C9 PC Accessories series and functions as an articulated mounting interface for industrial PCs or display panels used on machine enclosures and production cells. By pairing with tubular support arms, it lets operators swivel and tilt an HMI to a convenient working position while keeping wiring inside the arm. The unit therefore facilitates ergonomic access to control software in automated lines without occupying cabinet space.

The bracket is rated for a maximum payload of 25.0 kg, so heavy panel PCs can be secured without supplemental bracing. Its swivel joint allows up to ±170° of rotation, which is useful for positioning the screen alongside wide conveyors, while the tilt joint offers ±12° to set viewing angles above or below eye level. Two mounting hole grids, one of which is 100 × 100 mm, match common VESA patterns and machine-side adapter plates. The housing is rated IP40, which helps keep out tools or wire scraps larger than 1 mm that are common in assembly zones. Final assembly stability depends on tightening the cap nut to 20 Nm; this torque clamps the joint faces together so that the chosen orientation is preserved during repetitive operator interaction.

A circular tube with a 48 mm outer diameter slips 50.2 mm into the housing and is held by a clamping lever that locks the tilt axis once adjusted. The carrier uses aluminum and ABS components to combine corrosion resistance with impact-absorbing plastic covers, yet the overall mass stays at only 3.0 kg, keeping inertia low on long arm segments. Additional fasteners include M6 screws torqued to 6 Nm and threaded pins set at 3 Nm, giving a defined preload across all interfaces so that motion remains smooth even after extended production shifts.