The Campbell Hausfeld FP070041AV Air Compressor Flywheel provides critical rotational inertia to an air compressor pump, using smooth out power delivery and reduce vibration. It is mounted on the pump shaft and spins along with the motor, storing energy during the drive stroke and releasing it when the compressor head transitions between strokes. This action used the pump maintain con... https://www.wholetoolbox.com/campbell-hausfeld-fp070041av-air-compressor-flywheel