... -1987 D)Australia:AS1657-1985 E)Japan:JJS. Bearing Bar (Load Bar)Specifications (mm):The specification of plain type and serrated ... ,75 x 7 x 4,etc.Bearing Bar Pitch (center to center):12.5,15,25,30,30.16,32.5, 34 ... requirement and 30,40, 60mm are recommendedCross Bar Pitch (center to center):38,50,76,100, 101.6mm etc,also be according ...