The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10; The specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc. 2) Bearing Bar Pitch (center to center):

38.1, 40, 50, 60, 76, 80, 90, 100, 101.6, 102, 135mm and so on4) Material:

A) China: YB/T4001-1998

D) Australia: AS1657-1985