head holder meaning in English

头部固定器
头固定架

Accessoties of single spindle turret automatic lathes . single head holder . dimensions
单轴转塔自动车床辅具.单头刀杆.尺寸
Accessoties of single spindle turret automatic lathes . double head holder . dimensions
单轴转塔自动车床辅具.双头刀杆.尺寸
Gliding of grinding head holder adopts double straight line rolling glide . double ball screw rod transmission stabilizes moving speed and eliminates moving gap , reduces resistance and wear out , and ensures repeated positioning
磨头座滑动采用双直线滚动导轨，双滚珠丝杆传动，以达到稳定移动速度，消除移动间隙。