・因具有优异的强度耐热性耐湿性尺寸稳定性等特点、有助于提高回转破坏强度及降低片间段差， 进而实现了降低噪音及碳刷磨损等课题。
・同时具有良好的加工性，开槽(切削）加工轴压入点焊都非常易做。

・Excellent mechanical strength, heat resistance, humidity resistance and dimensional stability improve revolution at burst and bar-to-bar movement for noise reduction and brush wear.
・Processability such as slitting, press-fitting of shaft and fusing is also excellent.