It is a part of the track and is a closed continuous belt of articulated links with the help of specially made bushings and pins, liquid lubrication. Spare part of running systems to bulldozers KOMATSU - D375A-2/-3/-6(Ext), D375A-5 (up to #50000), D375A-5D (17743-UP) (number of links 40 pcs. , link pitch 280, 3 mm, closing half link)
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