Novel coupling of bearing vibration measuring instrument

The invention discloses a novel coupling of a bearing vibration measuring instrument. The novel coupling comprises a male coupling joint, a female coupling joint, a pin shaft, a nylon spacer bush and a sealing ring. The sealing ring is mounted on the nylon spacer bush; the nylon spacer bush is mounted on the pin shaft; the pin shaft is mounted on the male coupling joint; and the male coupling joint is in clearance fit with the female coupling joint. The male coupling joint is used for connecting a servo motor driving end, and the female coupling joint is used for connecting an input end of a bearing vibration measuring instrument main shaft. The device is stable in operation under a test condition, can effectively eliminate axial vibration and radial vibration of a motor driving end, cuts off a transmission path of basic vibration of the bearing vibration measuring instrument, and guarantees the accuracy and reliability of the bearing vibration measuring instrument. 本发明公开了一种轴承振动测量仪的新型联轴器，它包括：公联轴器接头、母联轴器接头、销轴、