crane movable pulley

Crane Movable Pulley

Crane Movable Pulley


A crane movable pulley is an important part of the crane machinery system. It consists of a wheel on an axle or shaft that moves a rope or cable that can lift or move heavy loads. In this article, we will explore the features, working, and purpose of crane pulleys.

How does a crane pulley work?

A crane pulley works on the principle of mechanical advantage. It reduces the amount of force needed to lift a heavy load. The pulley is attached to a fixed structure and a load-bearing rope or cable runs through the pulley. When the rope is pulled, the pulley rotates, and the load is lifted. The number of pulleys used in the system determines the mechanical advantage gained.

sheave pulley

Pulley Arrangements

A simple pulley arrangement involves a single pulley, while a compound pulley arrangement involves multiple pulleys. The more pulleys used in the system, the less force is required to lift the load. If the pulleys are arranged in a block and tackle system, the mechanical advantage increases exponentially.

Tandem Pulleys

Tandem pulleys are used in crane systems to increase the mechanical advantage. They are two pulleys arranged one after the other on the same shaft. Tandem pulleys are more efficient than simple pulleys because they distribute the load across two ropes or cables, which reduces the friction and wear on each individual rope/cable.

Wire Rope Pulleys

Wire rope pulleys are used in crane systems to prevent the rope from twisting as it moves through the pulley. They have grooves that run the length of the pulley to guide the wire rope and prevent it from coming off the pulley.

Sheave Pulleys

Sheave pulleys are used in crane systems to change the direction of the force applied to the rope or cable. They have grooves around the circumference of the pulley to guide the rope/cable and prevent it from slipping off.

Features of Crane Pulley

Crane pulleys come in various designs and sizes to suit different applications. Some common features of crane pulleys are:

sheave pulley

Load Capacity

The load capacity of a crane pulley is an important feature to consider when selecting a pulley. It is the maximum weight that a pulley can safely lift without failure or damage.


The material used to make the crane pulley affects its strength, durability, and resistance to wear and tear. Common materials used for crane pulleys include cast iron, steel, and aluminum.


The design of a crane pulley can affect its efficiency and safety. Pulleys with a larger diameter provide more mechanical advantage, while those with a smaller diameter are lighter and easier to handle.


Crane pulleys come in different types, such as fixed pulleys, movable pulleys, and compound pulleys. Each type has its unique features and applications.


The price of a crane pulley depends on its load capacity, material, design, and type. Different pulleys come at different prices, and it is essential to choose one that fits your budget and meets your requirements.

What is the purpose of a crane pulley?

The primary purpose of a crane pulley is to provide a mechanical advantage that reduces the amount of force required to lift a heavy load. Crane pulleys are used in various industries, such as construction, manufacturing, and transportation, to move heavy objects from one location to another. They are also used to lift and lower loads to different heights and change the direction of the force applied to the rope or cable.

sheave pulley

How to choose or customize a suitable crane pulley?

Choosing or customizing a suitable crane pulley depends on various parameters and practical conditions. Here are some points to consider:

sheave pulley

Load Capacity

Determine the weight of the load that needs to be lifted or moved. Calculate the maximum load capacity required for the crane pulley.

Wire Rope Diameter

Determine the diameter of the wire rope or cable that will be used with the crane pulley.


Determine the speed at which the crane pulley needs to operate. Select a pulley that can operate at the required speed without causing damage or failure.


Determine the environment in which the crane pulley will operate. Select a pulley that can withstand the temperature, humidity, and corrosive conditions of the environment.


Select a material for the crane pulley that is strong, durable, and resistant to wear and tear. Choose a material that can withstand the load capacity and environmental conditions.


Select a type of crane pulley that suits the application. Choose between fixed pulleys, movable pulleys, and compound pulleys, depending on the need.

HZPT specializes in designing, developing, and manufacturing high-performance crane pulleys. We also procure and export aftermarket automotive parts to meet all our customers' needs. Our products are popular in the European, South American, and Australian markets and have won the trust of many customers. We prioritize product quality and demonstrate a "customer-first service" policy. With a young, vibrant, and capable team, we believe we can provide professional services to meet any of your requirements. Quick delivery is one of our advantages. In China, we have a professional factory to develop new products and provide OEM services. In addition, we have a well-stocked warehouse and timely distribute goods to meet the needs of many customers. We will continue to improve our services and provide the best quality products at competitive prices. Any inquiries or suggestions are greatly appreciated, please feel free to contact us.

Company and Product Advantages

Here are some reasons why you should choose HZPT as your crane pulley supplier:

Quality Assurance

Our products undergo rigorous quality control and testing to ensure they meet the highest industry standards. We use advanced technology and modern equipment to manufacture our products.

Customer Service

We provide a customer-first service policy and prioritize customer satisfaction. Our team is always ready to assist you with any inquiries or concerns.

Competitive Prices

We offer the best quality products at competitive prices. Our pricing strategy is designed to meet your budget and requirements.


We provide customized solutions to meet your specific requirements. Our team of experts can help you design, develop, and manufacture crane pulleys that suit your needs.

Quick Delivery

We value your time and offer quick delivery services to meet your deadlines. Our well-stocked warehouse and efficient distribution system ensure timely delivery of goods.


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