684 JWE Open Miniature Ball Bearing 4mm x 9mm x 2.5mm
Miniature ball bearings are one of the most commonly used bearing within many different industries. Open type miniature bearings are manufactured without seals and shields to allow oil and grease to flow freely through the bearing for lubrication purposes, They can be used in gearboxes and other environments where no foreign matter would be present. They are versatile, robust and fairly easy to maintain.
