Black Plastic Sheaves 40mm

Black Plastic Sheaves for Pulley or Wheel Applications

These molded-plastic components have a grooved perimeter for guiding cord, string, or small round belts and may also function as small model wheels. The center bore supports either a tight press-fit axle connection or a looser free-rotating axle arrangement depending on the selected axle diameter and intended motion.

Product Specifications

Applications and Benefits:

• Build simple pulley systems.
• Construct fixed or movable pulleys.
• Demonstrate mechanical advantage.
• Guide cord, string, or small round belts in pulley applications.
• Create wheels for model cars.
• Build small robotic vehicles.
• Make belt-driven mechanisms.
• Replace sheaves in educational pulley models.
• Develop custom science and engineering projects.
• Prototype small mechanical assemblies.
• Use the 1/8 inch axle option when the wheel must remain attached to and rotate with the axle.
• Use the 3 mm axle option when the wheel or sheave must rotate freely around a stationary axle.

Caution:

The center bore is approximately 3 mm, and actual fit may vary because of normal manufacturing tolerances in molded sheaves and axle rods. The 1/8 inch axle is intended to create a tight fit and may require moderate pressure during installation. The 3 mm axle is intended to provide clearance for freer rotation. Select cord, string, or belt diameter according to the approximately 2.5 mm groove opening and the intended application.