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Premium Custom Square Shaft Forging for Ultimate Durability. Custom Square Shaft Design: Square cross-section prevents rotation, ensuring stable operation under heavy loads. High Precision Tolerance: Journal dimensional accuracy IT01-IT5 with 0.01-0.03mm relative position accuracy. Customizable Dimensions: Length min 1000mm, diameter min 200mm, with custom color and certificate options. High Load Capacity: Made from high-strength alloy steel, offering excellent wear resistance and stability. Strict Quality Control: 100% inspection including UT, hardness, and mechanical property testing for each order. Proven Export Experience: 14+ years exporting to 50+ countries with ISO 9001:2015 certification since 2015.