Sheave Block SBW/SBM type

A sheave block, also known simply as a sheave, is a type of pulley with a grooved wheel designed to hold and guide a rope or cable. Sheaves are commonly used in various applications, including industrial, construction, maritime, and transportation. They serve several important functions:

• Change Direction: Sheaves are used to change the direction of the rope or cable. When a rope or cable passes over a sheave, it changes its path, allowing it to be redirected as needed.
• Increase Mechanical Advantage: By using multiple sheaves in a block and tackle system, you can increase the mechanical advantage, making it easier to lift heavy loads. This is a fundamental principle in mechanical advantage systems.
• Reduce Friction: The grooved design of the sheave wheel reduces friction between the rope or cable and the wheel, which is particularly important when lifting heavy loads. Reduced friction minimizes wear and tear on the rope or cable.
• Maintain Tension: Sheaves can also help maintain tension in a rope or cable, preventing it from becoming slack, which is crucial in applications like lifting and rigging.

Sheaves come in various sizes and configurations, depending on their intended use. They can be made from different materials, such as steel, aluminum, or plastic, depending on the application's requirements.

In summary, sheave blocks are essential components in many mechanical systems, helping to change the direction of ropes or cables, increase mechanical advantage, reduce friction, and maintain tension.