Industrial encoder accessories, encoder wheels, and encoder meter wheels are components used with encoders to measure position, speed, or direction of rotating shafts or linear motion. Encoder wheels are typically made of aluminum and polyurethane and feature evenly spaced slots or holes around the circumference. As the wheel rotates, an optical or magnetic sensor detects changes in the pattern to calculate rotation angle or linear travel distance. Encoder meter wheels are similar to encoder wheels but include a tire or tread that contacts the surface being measured. This type is commonly used for measuring conveyor belt speed or other linear movements. Material: Aluminum + Polyurethane, durable and wear-resistant. Suitable as a replacement for compatible devices. Size parameters: Thickness: 10mm / 0.39 inch Diameter: 50mm / 1.97 inch Bore Diameter: 6mm / 0.24 inch Color: As shown in photo Material: Aluminum + Polyurethane Package Contents: 1 x Encoder Wheel 1 x Wrench Note: The package includes only the items listed above. Other products are not included. Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.