Industrial 4in-3/8in-aluminum-tachometer-wheel-o-ring Tachometer Wheel

The Aluminum Tachometer Wheel with Rubber O-Ring is a 4" diameter, 3/8" bore, shaft-mounted wheel used in linear speed measurement and surface distance feedback for encoder systems. Constructed from lightweight machined aluminum with a replaceable rubber O-ring, it provides a non-slip rubber contact surface that minimizes slippage on smooth materials. Commonly installed in printing presses, conveyors, packaging equipment, wire and cable machinery, textile equipment, and material handling systems, it supports accurate surface speed measurement on paper, film, foil, plastic, and other smooth substrates. The replaceable O-ring design extends service life and supports encoder repairs, retrofits, and process measurement upgrades in industrial motion control environments.