Abstract: A tapered roller bearing (1) includes an outer race (5). The outer race (5) is formed by pressing a steel plate, instead of conventional turning, to reduce the manufacturing cost of the outer race (5). The outer race (5) includes a flange portion (11) provided at the large-diameter end of the outer race (5), and a cylindrical portion (12) provided at the small-diameter end of the outer race (5). The flange portion (11) and the cylindrical portion (12) of the outer race (5) are brought into engagement with a housing having an inner peripheral surface corresponding in shape to the outer peripheral surface of the outer race (5) so that the tapered roller bearing (1) can be easily mounted to the housing (2).

Abstract: It is desired to form a flange and roller guide surfaces on each retainer of a self-aligning roller bearing easily and with high precision. Each punched retainer include a large-diameter annular portion (1), a small-diameter annular portion (2), a plurality of bridges (3) extending between the annular portions (1) and (2) and defining a plurality of circumferentially separated pockets (4) therebetween, roller guide surfaces (1a) that can be brought into sliding contact with end surfaces of respective convex rollers (5), which revolve around the axis of the bearing, and a flange (6) formed by radially bending the large-diameter annular portion (1). The roller guide surfaces (1a) comprise punched sections formed on the portions of the inner peripheries of the pockets (4) located at the large-diameter annular portion (1), and the flange (6) has a Bent Portion® that extends the entire circumference of the large-diameter annular portion (1).