GUIDE ROLLER COMPONENTS BUSHINGS GUIDE ROLLERS Knurled surface on eccentric bushing for superior hold at adjustment position. superior smoothness and low noise. Drop in replacement for existing Drop in replacement for existing adapter bushings. guide rollers. Nickel plated for corrosion resistance. 52100 or 440 stainless steel. Sealed or shielded. TRACK Single and double edge options. V Edge is case hardened to 49-52 RC. TRACK ASSEMBLY square edge. Custom integration of all components into linear slide. Track can be bolted or welded to steel beam.