Safety Chucks

AYS Makina safety chucks connect the shaft securely to the machine in winding and unwinding applications. Their mechanical locking design holds the shaft firmly in place during operation and makes loading and unloading rolls easier, supporting safe and efficient work.

A safety chuck is the connecting element that holds the end of an air shaft, secures the shaft to the machine frame and transmits rotation to it. The shaft end is dropped into the chuck’s seat and the chuck is closed to hold it safely in place. At roll change, the shaft can be released and lifted out quickly and easily.

Where are they used?

Safety chucks are used together with air shafts on winders and unwinders. On packaging, printing, paper and plastic film lines, they are the preferred way to carry and drive the roll safely, especially on machines where heavy rolls are changed often. See our packaging page for application examples.

Our approach

Our safety chucks are designed with safe operation in mind: even if the operator forgets to lock the chuck, it locks itself on the first turn. The outer surfaces are induction-hardened against impact, and the parts are protected with chrome and special coatings. Spare parts are available for our chucks, and our technicians carry out fitting quickly and easily. We offer two products according to where the chuck sits on the machine, inside-frame and frame-mounted, each considered in slide-mounted and flange-mounted versions.

What to consider when choosing

• Load capacity: the combined weight of roll and shaft must suit the chuck’s capacity.
• Shaft end size: the chuck seat must match the end of the air shaft.
• Mounting position and style: the space available on the frame decides between inside-frame or frame-mounted, and slide or flange mounting.
• Drive and braking: how the chuck connects to a motor or brake should be clarified at the outset.
• Speed and torque: line speed and transmitted torque affect the choice of materials and surface treatment.