Lubrication enhancing type deep groove ball bearing

The utility model mainly relates to a lubrication enhancing type deep groove ball bearing which comprises an outer ring, an inner ring, a ball and a retainer, wherein an oil injection hole is formed in the outer ring of the bearing and is internally provided with a one-way valve; an annular oil storage tank is arranged on an annular raceway of the outer ring; redundant lubrication oil can be stored in the oil storage tank when oil is injected; a contact type sealing ring is installed between a bearing outer ring groove and a bearing inner ring groove, and can achieve an effective sealing effect to reduce leakage of lubrication oil. The oil injection hole and the annular oil storage tank are formed in the outer ring of the bearing, so that full lubrication of the deep groove ball bearing is ensured; the one-way valve is installed in the oil injection hole, so that the lubrication oil is effectively prevented from leaking from the oil injection hole, the lubrication effect is improved, abrasion of the bearing is reduced, and the service life of the bearing is prolonged.