Racks, also called pin rails and racks, are suitable for the middle part of scraper conveyors and transferers used in coal mines.

　　The rack and pin rail are placed on the rack base, which is the walking track of the coal mining machine. The rack base is welded to the middle slot groove, and the rack base and the rack are connected by the rack pin.

　　The rack and pin rail can be divided into 126 pitch racks and 147 pitch racks according to the pitch specifications.

　　The rack and pin rail can be divided into 3 pitch racks, 4 pitch racks, 5 pitch racks, 6 pitch racks, 7 pitch racks, 8 pitch racks, 9 Pitch rack.

　　The rack and pin rail can be divided into forged racks and forged racks according to the manufacturing method.

　　The racks and pin rails can be divided into Zhangjiakou racks, Northwest Benniu racks, Shanxi coal machine racks, Shandong mining machine racks, Zheng coal machine racks, etc.

　　Common rack and pinion models are: 115S-01, 01TXG126-5, etc.