greenlee wire pulley

Introduction to Greenlee Wire Pulley

  • High-Quality Material
  • Smooth Operation
  • Durable Design
  • Easy Installation
  • Wide Application

Types of Sheave Pulleys

1. Fixed Pulleys

Fixed pulleys have a stationary axle and are used to redirect the force in a rope or cable.

2. Movable Pulleys

Movable pulleys have a pulley mounted on a movable axle and are often used in combination with fixed pulleys to increase mechanical advantage.

3. Compound Pulleys

Compound pulleys consist of multiple fixed and movable pulleys working together to provide a higher mechanical advantage.

4. Block and Tackle Pulleys

Block and tackle pulleys are a system of pulleys with a rope or cable threaded between them, allowing for heavy loads to be lifted with less effort.

5. Snatch Blocks

Snatch blocks are pulleys that can open on one side, making it easy to insert a rope without threading it through.

6. Idler Pulleys

Idler pulleys are pulleys that are used to guide or tension a belt or rope in a mechanical system.

What is a sheave on a pulley

  • A sheave is a wheel or roller with a groove used to guide a belt, rope, or chain in a pulley system.
  • Sheaves are designed to minimize friction and wear on the rope or cable passing over them.
  • Sheaves help to change the direction of force in a pulley system.
  • Sheaves are commonly made from materials such as steel, aluminum, or plastic.
  • Sheaves come in various sizes and configurations depending on the application.

What are sheaves used for?

1. Transmitting Power

Sheaves are used to transmit power between shafts by means of a belt or rope.

2. Changing Direction

Sheaves are used to redirect the force in a pulley system to change the direction of motion.

3. Increasing Mechanical Advantage

Sheaves can be used in combination to create a mechanical advantage and make lifting heavy loads easier.

4. Tensioning Belts

Sheaves are used to maintain tension in belts or ropes in a mechanical system.

5. Guiding Ropes or Cables

sheave pulley

Sheaves guide ropes or cables in a controlled path to prevent tangling or snagging.

6. Supporting Loads

Sheaves can support loads by distributing weight evenly across the pulley system.

Process of Sheave Pulley

spa pulley


The mold for sheave pulleys is created to form the desired shape and size of the pulley.


The molten raw material is poured into the mold to form the pulley’s structure.

Raw Materials

Sheave pulleys are commonly made from materials such as steel, aluminum, or plastic, depending on the application.


The pulleys are manufactured according to the design specifications and quality standards.


Each sheave pulley undergoes rigorous testing to ensure it meets safety and performance requirements.

Antirust Treatment

Sheave pulleys are treated with anti-rust coatings to protect them from corrosion and extend their lifespan.

Separate Inspection

Every sheave pulley is individually inspected for quality control before being released for sale.


Each sheave pulley is marked with essential information such as size, load capacity, and manufacturer details.

How do you adjust sheave pulleys?

1. Check Alignment

Ensure the sheaves are properly aligned to prevent unnecessary wear and tear.

2. Adjust Tension

Adjust the tension of the belt or rope to ensure proper operation of the sheave pulley.

3. Lubricate Moving Parts

Apply lubricant to the moving parts of the sheave pulley to reduce friction and extend its lifespan.

4. Inspect for Wear

Regularly inspect the sheave pulley for signs of wear or damage and replace if necessary.

5. Balance Load

Distribute the load evenly across multiple sheave pulleys to prevent overloading.

6. Follow Manufacturer Guidelines

Refer to the manufacturer’s instructions for specific guidance on adjusting sheave pulleys.

About HZPT

sheave Pulley

HZPT was established in 2006 and is dedicated to manufacturing precision and high-speed transmission components, headquartered in Hangzhou. We specialize in producing various precision parts and can customize products according to your needs. Before establishing an overseas sales team, we began producing 3D printer parts, anti-theft screws and nuts, camera mounts, and more. We also provide assembly production one-stop service, eliminating intermediaries and saving time and costs. Regardless of the size of your project, we strive to provide you with the highest quality, most competitive parts, and the best service. Get us involved early, and we will help you spend wisely!