STEEL PLATE CAGE, CONICAL ROLLER BEARING USING THE SAME AND MANUFACTURING METHOD OF THE CONICAL ROLLER BEARING

Japanese Patent JP2016166652

A

PROBLEM TO BE SOLVED: To avoid the manufacturing of a caulking metal mold at each cage product while dispensing with a bottom expansion process of the steel plate cage, in the manufacturing of a conical roller bearing.SOLUTION: A steel plate cage 2 has a plurality of column parts 11 which partition a clearance between a large-diameter annular part 8 and a small-diameter annular part 9 into pockets 10 in one row. Each pocket 10 is formed into a dimension which permits the movement of a conical roller 3 progressing toward the large-diameter annular part 8 until a state of an outside diameter φD of an inscription circular diameter φd'≥a small flange 6 of the conical roller 3 is brought about from a state of the outside diameter φD of the inscription circular diameter