The invention discloses a front overhang swing arm stabilizer rod device for the cab of heavy duty vehicles. The front overhang swing arm stabilizer rod and a bearing structure are designed once againto further improve the stability of the front overhang swing arm stabilizer rod device for the cab, and the front overhang swing arm stabilizer rod device is provided. In the device, a T-shaped bearing is in interference fit to an overhang support hole in front of the swing arm of a stabilizer rod, and the structure is convenient to detach; the T-shaped bearing is made from MC nylon having a thickness of 5mm, which can ensure high strength load and the characteristics of high abrasion resistance, self lubrication and no abnormal sound; conical structure interference fit is adopted at the joint of the swing arm and the bearing, behind the swing arm of the stabilizer, and the structure is convenient to assemble and disassemble; and the bearing is made from polyurethane, and has abrasion resistance and heat resistance superior to those of rubber. According to the technical scheme, the device has the beneficial effects of simple structure and reasonable design, the service life of an overhang system is prolonged, and the stability, reliability and safety of vehicles are improved.