Kamata was born in Ibaraki Prefecture on December 16, 1937. After graduating from Chuo University, he joined Furukawa Electric in 1960. He won 1960, 1961 and 1964 Emperor's Cup. In 1965, Furukawa Electric joined new league Japan Soccer League. He retired in 1974. He played 106 games and scored 6 goals in the league. He was selected Best Eleven in 1967, 1968 and 1969.