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 slot or hole pattern to calculate rotation angle or linear travel distance. Encoder meter wheels are similar 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; resistant to wear, durable, and provides long-lasting performance. Suitable as a replacement for compatible products. 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 includes: 1 x Encoder Wheel, 1 x Wrench. Only the items listed are included; other products are not part of this package. Note: Lighting reflections and display differences may cause slight variations between the color in the image and the actual item. Measurement error allowance: +/- 1-3cm.