 OXFORD, Conn.--BUSINESS WIRE--RBC Bearings Incorporated Nasdaq: ROLL, a leading international manufacturer and marketer of highly engineered precision bearings and products for the industrial, defense and aerospace industries, today announced that it has commenced concurrent public offerings of 3 million shares of its common stock and 400 million in aggregate liquidation preference of Series A Mandatory Convertible Preferred Stock the mandatory convertible preferred stock. RBC Bearings 