Rolling bearing starting torque measuring method

The invention provides a rolling bearing starting torque measuring method. The method comprises the steps that a rotating shaft, a hanging rope, a tray, a base and a plurality of weights are provided,the base is fixedly connected with at least two supporting tables, and the rotating shaft is sleeved with a bearing to be measured; the two ends of the rotating shaft are rotatably bridged between the two supporting tables respectively, the central axis of the rotating shaft is horizontally placed, one end of the hanging rope is fixedly connected with the tray, and the other end of the hanging rope is wound on the peripheral surface of the bearing to be measured; the weights are added to the tray one by one, when the outer ring of the to-be-measured bearing rotates, the total mass m of the weights placed on the tray is recorded and obtained, the outer diameter L of the to-be-measured bearing is obtained through measurement, and the starting torque M of the to-be-measured bearing is obtained through calculation ac