Recently, Shenyang Sanland Mining Engineering Co., Ltd. completed machining and inspection of the main shaft assembly of the PXF5475 gyratory crusher. All fitted surfaces of the main shaft and cone body have passed checks for dimensions, concentricity and surface quality, and the assembly is now prepared for the next stage.

The main shaft assembly is the core component of a gyratory crusher. The shaft drives the cone body in a gyrating motion inside the crushing chamber, where material is crushed between the mantle and the concaves. The accuracy and rigidity of the main shaft assembly directly affect crushing capacity, running stability and liner life.

The main shaft is forged from alloy steel, rough turned, quenched and tempered, finish turned and ground at the fitted surfaces to ensure accurate fits with the cone body, sleeves and spider. The cone body is machined at its taper and fitted surfaces and assembled onto the shaft, after which concentricity is rechecked on the complete assembly. All fitted surfaces are finish machined and measured part by part, with records kept.

For quality control, forgings are checked for material grade and soundness on arrival, key dimensions are inspected after finish machining, and concentricity and fits are verified after assembly, ensuring the main shaft assembly meets drawing requirements for final erection and long-term heavy duty operation.

The completion of the PXF5475 main shaft assembly reflects Sanland's capability in manufacturing core components of large crushing equipment. Shenyang Sanland remains committed to providing reliable equipment and spare parts to mining customers worldwide.

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