The FAG NCF2904V is a small size cylindrical roller bearings with ISO dimensions 20×37×21 mm. Bearings in the 20mm bore range are commonly used in lathe spindles, gearboxes, printing rollers, cold rolling mills. This is an open type, requires periodic lubrication, suitable for clean environments variant. FAG/Schaeffler Germany — German precision engineering, especially strong in large and heavy-load bearings — 6 equivalent brands available under ISO designation NCF2904V.