... (Load Bar ) Specifications(mm):The specification of plain type and serrated type bearing bar is 20x3 to 100x10 , the specification of I ... –section type is 25x5x3, 32x5x3,38x5x3,40x5x3,50x5x3,50x7x4,55x7x4 ... , 60x7x4, 65x7x4, 70x7x4,75x7x4,etc. Bearing Bar Pitch ( ...