Cylindrical roller bearing and planetary gear assembly utilizing the same

摘要

There is provided a cylindrical roller bearing ( 1 ) which includes an inner race ( 2 ), an outer race ( 3 ) and first, second and third rows of rollers ( 4 A, 4 B and 4 C) accommodated within an annular bearing space delimited between the inner and outer races ( 2 and 3 ) with the second or intermediate row of the rollers ( 4 B) positioned between the first and third rows of the rollers ( 4 A and 4 C). The rollers ( 4 A and 4 C) of the first and third rows have respective lengths (L_A and L_C) greater than the length (L_B) of the rollers ( 4 B) of the second row.