As the key component of aero-engines and industrial gas turbines, a bearing's working temperature at high speed is close to 300 ℃ . The measurement of an engine bearing's temperature is of great significance to ensure flight safety. In this study, we present a wireless LC conformal temperature sensor for bearing temperatures, which integrates silver on the bearing surface in situ through a screen-printing process. This process makes Ag film (9912-K FL) firmly adhere to the bearing surface and realizes wireless measurements for bearing temperatures in situ. A high-temperature holding experiment of the prepared sensor was conducted, and the results showed that the sensor can work stably for 10 h at 300 ℃ . We tested the designed wireless LC conformal temperature sensor at 20 – 270 ℃ . The results showed that the proposed temperature sensor attained as good accuracy and stability in the temperature range 20 – 270 ℃ . The sensitivity of the temperature measurements was 20.81 KHz / ℃ when the bearing rotateds, the maximum repeatability was 0.039 % , the maximum uncertainty was 0.081 % , and the relative error was stable within 0.08 % . [ABSTRACT FROM AUTHOR]