Hook Cylinder ZPMC Port Machinery spare parts

The ZPMC hook cylinder, custom-designed for ZPMC (Zhenhua Heavy Industries) port crane hook systems, is the core power actuator for hook lifting and extension. Precision-manufactured from high-quality 45# alloy steel, the cylinder barrel undergoes honing, achieving a surface roughness Ra value controlled between 0.1 and 0.4 μm. The piston rod is made of 35# steel and heat-treated, achieving a hardness of 45-55 HRC. Forging and heat treatment processes eliminate internal material defects and optimize the microstructure, resulting in excellent compressive strength, impact resistance, and deformation resistance. It provides stable and powerful thrust, suitable for heavy-duty port lifting conditions, preventing cylinder deformation, piston rod bending, and leakage during use. The product surface is chrome-plated with a thickness ≥0.04 mm, and equipped with high-quality fluororubber seals, offering excellent rust and corrosion resistance and sealing performance. It effectively resists corrosion from the complex environments of ports, such as humidity, salt spray, and dust, extending service life. Suitable for the harsh conditions of high-frequency lifting and heavy-duty operation in ports, it meets the safety requirements of hydraulic systems.
As an original equipment manufacturer (OEM) power component for ZPMC, this product’s core function is to convert hydraulic energy into linear mechanical energy, driving the hook to achieve smooth lifting, lowering, and extension movements. It features a rigid connection with a balance valve, allowing for stepless speed regulation over a wide range, up to 2000:1. It also incorporates a buffer device to prevent the piston from impacting the end cap at the end of its stroke, reducing impact and sway during lifting, ensuring precise hook lifting, smooth operation, and preventing cargo slippage. Widely used in the hook systems of port container cranes, gantry cranes, and quay cranes, it is a key component for ensuring port lifting operations safety and improving efficiency. The product utilizes an integrated precision molding process, ensuring accurate dimensions. The coaxiality tolerance between the cylinder and end cap, and between the piston and piston rod, is controlled within 0.03mm. It fits snugly into the hook installation position, facilitating easy installation without additional modifications. Compatible with various ZPMC port crane hook systems, it meets the needs of high-frequency, heavy-duty lifting operations.

Basic parameters:

Place of Origin: Shanghai China
Brand Name: Yingyu
Model Number:
Material: Hydraulic
Size: 50*100*250mm
Color: Grey
Face Material Composition: Paint
Weight: 7.6kg
Product Name: Hook Cylinder

ZPMC hook cylinders, with their superior materials, precision manufacturing, and reliable power performance, are the core power actuators of port crane hook systems. They directly affect the safety, accuracy, and efficiency of lifting operations, and are crucial to the safety of personnel, equipment, and cargo. Leveraging ZPMC’s leading technology in the global port machinery industry (holding the world’s number one market share in port machinery for 27 consecutive years and participating in the construction of 60% of the world’s automated terminals), this product is compatible with the entire range of ZPMC port crane hook systems. Its quality is completely identical to original equipment manufacturer (OEM) parts, allowing for direct replacement. Its compact structure, light weight, and low inertia effectively improve hook response speed, providing stable and safe power for heavy-duty lifting operations in ports, helping to improve operational efficiency and avoid lifting safety accidents caused by cylinder malfunctions.

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