The hollow shaft is a key component installed at both ends of the ball mill shell. It serves as the support, power transmission and material passage part of the whole mill.

Different from solid shafts, its hollow structure allows raw materials to smoothly enter and exit the grinding chamber. Operating under long-term combined loads of torsion, bending and impact, this part is forged from high-quality alloy steel and undergoes multiple heat treatments. It features high strength, good toughness, strong fatigue resistance and excellent wear resistance.

Precision machining ensures high concentricity and smooth surface, which effectively reduces running vibration and leakage. It is perfectly matched with bearings and end covers, and widely used in various cement raw mills, clinker mills and wet grinding mills.