DC Electric Press-Fit Systems Press Spindle Configuration The Rexroth press spindle is a compact configured component. It consists of the press component, an EC motor flanged on via an adapter, the speed of which is stepped down by a planetary gearbox, and the measurement converter included with the press component. The tool mount of the press component is designed in accordance with DIN standards. Press Components The press components consist of a sturdy cast aluminum housing. The housing incorporates a digital angle encoder as the displacement transducer and a force transducer incorporating tried-and-tested strain-gauge technology. The associated amplification electronics are accommodated in the separate measurement converter. The spindle in the press component is a planetary recirculating roller thread spindle. This is supported on the housing via the force measuring ring. The spindle can move freely, thus ruling out the possibility of load distortion. The operating range is limited upwards and downwards by contactless inductive transducers.