Expansion Sleeve for Keyed Air Shaft‌

Keyed Bar Meshing Structure: A keyed bar or keyway is provided on the inner wall or outer edge of the sleeve to match the key on the air shaft, thereby achieving torque transmission and anti-slip function.

High-Strength and Durable Material: Typically made of machined aluminum alloy with a hard anodized surface, ensuring lightweight and wear-resistant performance.

Inner/Outer Diameter Expansion Mechanism: Through an inflation or spring/clamp structure, the original air shaft can be quickly expanded to adapt to a larger drum inner diameter, while a key and keyway locking structure is used.

Ensuring Precise Torque Transmission and Positioning: The keyed bar structure prevents slippage during high-speed winding, suitable for high-torque, high-speed applications.

Typical Applications: Used in printing presses, slitting machines, and rewinding machines for air shafts with keyways to ensure stable and precise positioning of the drum when quickly changing to larger drums or different inner diameters.