MEASURING INSTRUMENT FOR THRUST LOAD ON BEARING

PURPOSE:To measure a thrust load on a bearing speedily and accurately by arranging unit cells which have strain gauges at almost equal intervals in the circumferential direction of a unit cell holder and have peak parts in contact with the other flank of a flange, and interposing a rotation stop member between the side plate of a bearing support member and the bearing flange. CONSTITUTION:Unit cells 9 for thrust load measurement are arranged in recessed parts provided at almost equal intervals in the circumferential direction of the annular side plate 8a at one end part of the bearing support member 8, and the peak parts of the unit cells 9 are brought into contact with one flank of the flange 6; and one end of a rotation stopper pin 10 arranged between the unit cell 9 and 9 on the side plate 8 a is fitted in a hole bored in the flange 6 to prevent the flange from rotating together with a shaft 1. Recessed parts 16 are provided in the top and reverse surfaces of a main unit cell body 14 and a strain gauge 17 which detects shearing strain is stuck on the bottom surface and ceiling surface of each recessed part 16, and while heat-resisting and oil-resisting resin is charged in the recessed part 16, the main unit cell body 14 is covered with stainless steel foil, so that the strain gauge 17 is protected from head and oil.