The manufacturing process of long shackle brass padlocks involves a series of controlled steps designed to produce a functional and durable security device. Each stage focuses on forming, assembling, and finishing the padlock components to meet standard performance requirements.

The process begins with material preparation. Brass is selected for the padlock body due to its resistance to corrosion and ease of machining. Brass bars or billets are cut into suitable sizes and then shaped through forging or machining to form the main body. This step ensures uniform dimensions and sufficient strength to house the internal locking mechanism.

Next, the shackle production takes place. The long shackle is typically made from steel wire or rod, which is bent into the required U-shape. The shackle is then heat-treated to improve its mechanical properties, such as hardness and resistance to deformation. After heat treatment, the shackle surface may be polished or plated to enhance corrosion resistance.

The locking mechanism assembly follows. Internal components, including pins, springs, and cylinders, are manufactured separately with precise tolerances. These parts are assembled inside the brass body to form the locking system. Accurate alignment is important to ensure smooth key operation and reliable locking performance.

After assembly, the padlock undergoes surface finishing. The brass body may be polished, brushed, or coated to achieve a uniform appearance and provide additional surface protection. Markings such as logos or product information are often added at this stage through stamping or engraving.

The final step involves inspection and testing. Each padlock is checked for dimensional accuracy, key function, and locking operation. Basic functional tests help verify that the shackle opens and closes correctly and that the key operates smoothly.

https://www.keeperlock.com/product/aluminum-padlock/al3100-curved-aluminum-padlock.html
ART. NO.
SIZE
AL3120
20mm
AL3130
30mm
AL3140