STAR21型高速动车正式投入试运行24个月后，按日本“省令”规定进行了转向架检查。在试运期间，运行里程达107535km，并创下了425km／h的最高纪录。本文较详细地介绍了其高速转向架各部件的检查情况，主要包括：驱动装置、轴箱、轴承、转向架构架、轮对、减振器、牵引电动机轴承等，指出了存在问题和采取的措施。同时提出车轴密封滚子轴承等应在新干线电动车上大力推广应用。 STAR21 high-speed car was put into trial operation 24 months later, according to the Japanese “provincial order” bogie inspection. During the trial operation, the mileage reached 107535km, setting the highest record of 425km / h. This paper introduces the inspection of the components of high-speed bogie in more detail, mainly including: driving device, axlebox, bearing, bogie frame, wheelset, shock absorber, traction motor bearing, etc., pointing out the existing problems and adopting Measures. At the same time, it is suggested that the axle seal roller bearings should be vigorously popularized and applied on the Shinkansen electric vehicles.