Catalogue Drive Systems 2014
48Pages

Ortlieb Präzisionssysteme GmbH & Co. KG Dettinger Str. 129 73230 Kirchheim unter Teck Germany Tel. +49 7021 9469-0 Fax +49 7021 9469-51 info@ortlieb.net www.ortlieb.net © 2013 Ortlieb Präzisionssysteme GmbH & Co. KG • D-A-E-0314 All rights reserved • Subject to change • No warranty for contents. SERAC® electric cylinder ASCA servo screw Drive systems Electric power instead of oil

Ortlieb Präzisionssysteme GmbH & Co. KG Dettinger Str. 129 73230 Kirchheim unter Teck Maximum performance – Always more than you expect For Ortlieb, the PRECISION COMPANY, innovation, quality and precision have a long tradition. Everyday customer proximity has been and remains the basis for economic and precise solutions in drive and clamping technology. Ortlieb customers benefit from the concentrated, continuous further advancement of its development and manufacturing expertise aimed at the greatest possible customer benefit. But Ortlieb does not just react to the demands of the market, we...

Concentration on the essentials leads to outstanding results Drive systems Clamping systems The two sister companies, Wilhelm Narr GmbH & Co. KG and Ortlieb Präzisions-Spannzeuge GmbH + Co. have merged and from 2011 have traded as Ortlieb Präzisionssysteme GmbH & Co. KG. In the light of this all Narr products and drive systems can be found in this catalogue. Since 1911 we have stood for innovative and extremely reliable solutions in workpiece and tool clamping. Whether you need standard collet chucks or manufacture of special clamping devices to specification – the benefit of our extensive...

Drive systems with maximum power density With the ASCA servo screw, a genuine alternative now exists for applications which until now have been dependent on hydraulic drives. The basis is the technology of the PWG planetary roller screw. The ASCA servo screw is the technological basis of the SERAC® electric cylinders. Ortlieb Präzisionssysteme GmbH & Co. KG • www.ortlieb.net • info@ortlieb.net

ASCA servo screw SERAC® electric cylinders The ASCA servo screw combines the functions of a planetary gear unit with those of a screw. The merging of these two functions leads to a considerable reduction in the space and weight of a drive axis. These fully redesigned servo linear drives utilize the many benefits of the ASCA servo screw. A typical example of the many advantages of the SERAC® electric cylinders is their high dynamics. They are increasingly replacing previous hydraulic solutions in many applications. SERAC® LH100, XH12, KH30 und Servoregler ServoOne SERAC® XHM This screw unit...

ASCA servo screw – unique power density for automation The ASCA servo screw is based on the PWG planetary roller screw design principle. This new screw technology converts the rotary motion of a motor directly into linear motion. The dimensions of the ASCA servo screw can be extremely compact in form considering the force achieved. Because the reduction of a planetary gear unit is part of its functionality, the motor connection can be made directly without additional gears. With its compact size and the potential for reaching very high forces and rapid motion with small motors, the ASCA...

Drive technology from space travel … Development background The German Aerospace Center (DLR) developed the first remote-controlled robot for the D2 mission (1993). Brilliant design is one thing, but turning it into an industrial-scale product that works reliably in all situations is quite another. The problem of meeting the strict weight limit while generating the required force could not be solved with conventional screw drives. Because of these conflicting requirements, the DLR decided to look for a completely new approach. The project for this solution led to the development of the PWG...

PWG Planetary roller screw Power transmission can be through the screw shaft or the screw nut. The connection between nut and screw is formed by several rotating planetary rollers. The transmission of the drive torque is by frictional locking. This causes low slip – which is not to be confused with backlash. The planetary rollers with their circumferential drive grooves emulate the screw thread according to their various positions in the planet carrier. As they orbit the screw as they spin, the screw is driven axially according to the direction of rotation. The large number of contact...

Planetary rollers Guide grooves Drive grooves Planetary bearings Screw shaft Planet carrier Efficiency curve [%] The diagram shows the driving torque required to generate a specific force (without allowing for the screw bearing). The diagram shows the efficiency curve of an ASCA servo screw with 1 mm and 2 mm lead. Example: At 2 mm lead, torque of only 3.4 Nm is needed to generate 10 kN. At 1 mm lead this is reduced to 1.9 Nm. It is clear that very high efficiency levels can be obtained even at small leads. Due to the preloading of the planetary rollers, the efficiency is relatively low in...

ASCA servo screw – lead from 1 mm High travel speeds High translation rates High efficiency High stability and high load capacity with minimal volume! The combination of the “screw” and “planetary gear” principles gives great variability and optimization of the design. Under this principle an electric cylinder with an ASCA servo screw does not generally need an additional gear unit. The specific advantages of this innovative construction include the ability to use a lead of only 1 mm without any problem. The result is very high translation rates and efficiency levels of up to 90 % are...

Specific technological advantages for many different solutions The versatile potential of the ASCA servo screw: • High translation rate • High power density • High load capacity • High efficiency • High dynamics • High travel speed • Long life • Robust construction • High rigidity The ASCA servo screw offers the solution for many different applications: pneumatic cylinders • Short cycle time • Limited space application • High force requirement • High travel speed • Extreme creep movement • High dynamics • Quiet running - without roller resetting • Lightweight construction • Short strokes...