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Linear bearings are widely used in many linear movement systems such as cylinder rods, automatic precision printers, automatic cutting machines and industrial robots. Linear bearings are a kind of product that has the guide function of a plain bearing and can perform linear movement. These linear movement systems require a simple design, best exection, low maintenance costs, a strict selection of durable materials, high frequency heat treatment, accurate outer diameter, roundness, straightness and surface treatment. › See more product details; Product description Items included 2 pieces HGR15 / HGR20 linear guide (choose length). 4 pieces HGH15CA/HGW15CC/HGH20CA/HGW20CC block.; Product description Items included 2 pieces HGR15 / HGR20 linear guide (choose length). 4 pieces HGH15CA/HGW15CC/HGH20CA/HGW20CC block.; Items included 2 pieces HGR15 / HGR20 linear guide (choose length). 4 pieces HGH15CA/HGW15CC/HGH20CA/HGW20CC block.