主轴托架 meaning in Chinese

spindle carrier
spindle holder

Machine tools . front faces of spindle holders for machining centres . functional dimensions
机床.加工中心主轴托架正面.功能尺寸
Tool shanks with 7 24 taper for automatic tool changers - specification for functional dimensions of front faces of spindle holders for machine centres
带7 24锥形自动刀具变换器的刀具柄.加工中心主轴托架的正面功能尺寸的规范