防铁屑与冷却液，防止污染内部结构。
卡盘本体与部件经淬火处理，采用长效润滑，确保高精度与较长的使用寿命。
离心力补偿，适合高－低压夹紧。
An internal floating cam makes it possible to clamp on the standard center hole even when the outer diameter of a work piece is not centered.
Features a fully sealed structure that extends lubrication intervals and prevents coolant infiltration.
Suitable for higher or lower pressure gripping working.

后拉工件至参考定位上；
卡盘补偿夹持；1补偿夹持-2后拉-3夹紧
尾座底提供支撑零件所必需的力，卡盘把工件拉向中心，这样工件不易弯曲，加工出来的轴同心度非常好。
Pull back the workpiece to the proper position
3 clamping process: 1st compensation gripping,
2nd pulling back, 3rd gripping tight