Rolled Pulley Block

Rolled pulley blocks are key components of lifting machinery manufactured by hot rolling or cold rolling forming processes. Compared with traditional cast pulleys, they have better mechanical properties and dimensional accuracy. Its core structure includes rolled rims, hubs, bearing seats and reinforcing ribs. The materials are mostly made of high-quality carbon steel or low-alloy steel, and the consistency of the pulley groove is ensured by precision rolling. This process can greatly reduce material defects, improve product strength and fatigue life, and is suitable for medium and high-intensity lifting operations.

Rolled pulley blocks have the advantages of light weight, high strength, and good wear resistance. Their surface finish and dimensional accuracy are better than cast pulleys, which can effectively reduce wire rope wear. They are mainly used in equipment such as bridge cranes, gantry cranes, tower cranes, etc., especially suitable for frequent lifting or high-speed operation. Some heavy-duty rolled pulleys also adopt a segmented structure design, which is easy to maintain and replace, and the hardness and toughness can be further improved through heat treatment.

Daily maintenance requires regular inspection of rope groove wear, bearing lubrication and structural deformation to ensure that the pulley runs smoothly without abnormal noise. When selecting the model, the corresponding specifications should be matched according to the lifting weight, wire rope diameter and working level, and reference should be made to industry standards such as JB/T 9005. For high temperature or corrosive environments, rolled pulleys with surface coating or stainless steel can be selected to extend the service life.