2BG-6A型条播机有两套链轮副:一副为旋切刀轴传动链轮副,由一根19.05毫米(3/4英寸)节距、56节的双排滚子链与28齿、12齿链轮组成,安装在链轮传动箱内;另一副为播种轴传动链轮副,由一根12.7毫米(1/2英寸)节距,134节的单列套筒滚子链与22齿、19齿链轮组成,安装在手扶拖拉机驱动轮轴及排种轴上。使用与保养好这两套链轮副是避免播种机损坏的关键。 2BG-6A seed drill has two sets of sprocket vice: a pair of rotary cutter shaft drive sprocket, consists of a 19.05 mm (3/4 inch) pitch, 56 knot double row roller chain and 28 teeth , 12 tooth sprocket assembly, installed in the sprocket gearbox; the other for the seeding shaft drive sprocket, a 12.7 mm (1/2 inch) pitch, 134 single-row sleeve roller chain and 22 teeth, 19 tooth sprocket components, mounted on the walking tractor drive shaft and seed shaft. Use and maintenance of these two sets of sprocket Vice is to prevent damage to the planter key.