... 5 is the normal most simple one. Roller guide: GZB(heavy load with roller cage) Size: 35mm, 45mm, 55mm, 65mm, 85mm ... s request, block and rail assembled for the shipping. Characteristic: Heavy load, low noise, high speed, high accuracy; Normally used for ... machining center, grinding machinery, heavy machinery etc.SHANDONG TONGYA TRAFFIC SAFETY FACILITIES CO.,LTD Sarah ...