用带传感器的试验用单牙轮钻头，在改变轴倾角、钻压和转速的条件下进行钻头轴承载荷的台架试验，得到动载荷系数、轴向力、径向力、周向力、扭矩和牙轮传动比等数据。对实测和计算数据的分析表明，单牙轮钻头的动载荷系数基本不随钻压、转速和轴倾角变化，并且比三牙轮钻头低；轴向力和径向力随钻压的增加而增加，且受轴倾角的影响；周向力随扭矩的增加而增加；牙轮传动比小于１，基本不受钻压和转速的影响，但与轴倾角有关。有限元分析表明，轴承内部存在三个应力集中区域。 With a single-cone test roller with a sensor, a bench test of bit bearing load was carried out under conditions of changing shaft inclination, weight-on-bit and rotational speed to obtain dynamic load coefficient, axial force, radial force, circumferential force, torque and teeth Wheel drive ratio and other data. The analysis of measured and calculated data shows that the dynamic load coefficient of single-cone bit is basically not change with the weight-on-bit, rotational speed and axial inclination, and is lower than the tricone bit; axial force and radial force increase with the increase of the bit-pressure , And is affected by the axial inclination; the circumferential force increases with the increase of torque; the gear ratio is less than 1, which is basically unaffected by the weight-on-bit and the rotation speed, but is related to the axial inclination. Finite element analysis shows that there are three stress concentration areas inside the bearing.