說明：適用於以水為潤滑介質的各種類型船舶。
軸向串動≤1mm時，可選用SM型：
軸向串動≤±3mm時，及轉速較高時可選用SMB型。
Remarks:
It is suitable for kinds of vessels whose working medium is water.
When the axial vibration≤1mm,the SM type can be used;
When the axial vibration≤±3mm and then speed is high,the SMB type can be used.