This is a pneumatic round bar feeder, an automated feeding equipment designed for bar processing, suitable for automatic loading and continuous feeding of round bars in lathes, machining centers and other machine tools. The equipment adopts a cylinder reciprocating feeding structure, realizing continuous step feeding of round bars through the reciprocating action of cylinder extension and retraction. It replaces manual operation, greatly improves processing efficiency and feeding stability, and is widely used in bar processing production lines in hardware processing, mechanical manufacturing and other industries.The equipment is equipped with arc-shaped profiling clamping grooves to stably clamp round bars, ensuring coaxiality during feeding. The core power comes from multiple pneumatic cylinders, which drive the clamping mechanism to perform extension and retraction reciprocating motion to complete step feeding. It is matched with high-precision linear guide rails to ensure smooth movement and feeding accuracy. The integrated frame, safety limit structure and simple pneumatic control system ensure stable operation, low failure rate and easy maintenance of the equipment.