not shown all have engaging helical teeth the transmission of torque through the helical teeth results in a thrust load tending to displace the loaded gears relative to one another the thrust load can press together parts axially linked to the gears such as the ring gear hub and the planet gear carrier the first member 5 and the second member 6 are intermittently pressed toward each other 6 5 by the thrust loads the disengaging thrust bearing 10 has three principal components a caged needle roller assembly 12 a first race 14 and a second race 16 all three 12 14 16 are centered about the common axis of rotation 8 the first race 14 is annular in shape the first race 14 is a one piece forming with an integral first thrust surface 22 a first flange portion 24 and a first spring portion 26 the first thrust surface 22 is a planar surface approximately perpendicular to the axis of rotation 8 the first thrust surface 22 has a first inside diameter circumference 29 and a first outside diameter circumference 31 the first thrust surface 22 faces the second race 16 the first flange portion 24 extends axially toward the second race 16 from the first outside diameter circumference 31 the first spring portion 26 extends both axially toward the second race 16 and radially inward from the first inside diameter circumference 29 the first spring portion 26 has a first edge 34 distal to the first thrust surface 22 the second race 16 is also annular in shape the second race 16 has a second thrust surface 36 a second flange portion 38 and a second spring portion 40 the second race 16 is a one piece forming that integrates a second thrust surface 36 a second.