... ,(50-75)×7×4 FB19×4.5,(25-44)×(3-4.5),(50-90)×62.Section type:3.pitch of bearing ... bar:12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, ... Bar Spacing Cross Bar Spacing Bearing Bar Spec (width×thickness))20×325×332×340×320×525×530100G203/30/100G253/30/100G323 ... 60/50G255/60/50I bearing barI bearing bar spec 25×5×332×5×338×5×350×7×455×7×465×7×43050/100GI2553/30GI3253 ...