Rotor subassembly suitable for dynamic balance test

The utility model discloses a rotor subassembly suitable for dynamic balance test. Disclosed rotor subassembly includes rotor (100), and rotor (100) have the keyway, the rotor subassembly still includes: a plurality of pearls bodies (200) of packing in the keyway, the detachably closing cap is at the notch of keyway, just with closing cap spare (300) of a plurality of pearls body (200) sealing in the keyway. The packing mud or half parallel key of filling in the keyway can be solved to above -mentioned scheme when dynamic balance test is implemented to present antitrochanter can't utilize the extravagant problem that leads to again. 本实用新型公开种适用于动平衡试验的转子组件。所公开的转子组件包括转子(100)，转子(100)具有键槽；转子组件还包括：填充在键槽内的多个珠体(200)；可拆卸地封盖在键槽的槽口，且将多个珠体(200)封固在键槽内的封盖件(300)。上述方案能解决目前对转子实施动平衡试验时填充在键槽内的填充泥或半平键无法重新利用所导致的浪费问题。