To provide a self-propelled work machine which can stably turn without installing special equipment on a towed work machine.SOLUTION: A self-propelled work machine comprises a travel part D having travel motors 15a, 15b which are provided on left and right sides in a travel direction of a body part L which is an airframe and performing drive travelling, and further comprises, in the front and rear of the travel part, a traction part P for traction of other work machine, an operation part B for operating the travel part by wireless communication, a conversion part control device E which converts a signal sent by the operation part and processes the signal in order to control rotation of the travel motors 15a, 15b, and a normal spin turn/super spin turn changeover switch which is provided on the traction part and performs changeover of a turning travel system of the airframe when other work machine is connected to the traction part. When the turning travel system selects a normal spin turn mode or a super spin turn mode by the changeover switch, the conversion part control device performs control for switching to each turn mode. Further, provided is a control system of said self-propelled work machine.SELECTED DRAWING: Figure 1【課題】被牽引作業機に特別な装置を搭載することなく、安全に旋回できる自走式作業機を提供する。【解決手段】機体である本体部Ｌの進行方向左右側に設けられ駆動走行をさせる走行モータ１５ａ、１５ｂを有した走行部Ｄと、前記走行部の前方又は後方には、他の作業機を牽引させるための牽引部Ｐと、前記走行部を無線通信によって操作するための操作部Ｂと、該操作部から送られた信号を変換し、前記走行モータ１５ａ、１５ｂの回転を制御するため信号を処理する変換部制御装置Ｅと、前記牽引部に設けられ、前記牽引部に他の作業機が接続されると、前記機体の旋回走行方式を切換える通常信地旋回／超信地旋回切替スイッチを備える。該変換部制御装置は、前記切替スイッチによって旋回走行方式を信地旋回モード又は超信地旋回モードを選択すると、それぞれの旋回モードに切り替えるように制御する、自走式作業機及び自走式作業機の制御の制御システム。【選択図】図１
