linear motion bearings and slides (SBR35) SBR Series Guide is a series of box-type linear guide bearings, shaft and anti-skew high hardness level of aluminum into the slide rail unit. Axis and the base hardness of aluminum rails to install the required holes in the shaft hardened after drilling to ensure the accuracy of the product. SBR series low cost, short production cycle, easy to install and other characteristics, has become an alternative to square linear guide products