| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration damper of a grinder capable of easily damping vibration of a rotary part of the grinder without impairing workability and applicable even to an existing grinder. SOLUTION: An annular member 11 having a ring-shaped groove 11a concentric with a driving shaft 4 is fitted and inserted into the outer periphery of a grinding wheel receiver 7. Plural balance balls 12 for freely moving in the groove 11a are arranged in the ring-shaped groove 11a. |
