Gewinde Ziegler AG Nuts & Screws

Product Details

Gewinde Ziegler AG's decades of experience in thread grinding led to the foundation of Gewinde Satelliten Antriebe AG (GSA AG) in 1982. Since then, GSA AG has been manufacturing high-precision planetary roller screws (RGT). With know-how accumulated over generations, GSA AG has become one of the leading international manufacturers of planetary roller screws and is as an innovative company ISO 9001:2015 and ISO 14001:2015 certified. In 2014, Gewinde Ziegler AG has purchased Härterei Hertig AG, thus securing years of know-how that had been acquired together. In 2019, we moved into a new building in Horriwil. 
Precision Locknuts
Gewinde Ziegler AG is an established name in the precision locknuts market. The standard programme includes our four precision locknut types ZM, ZMA, ZMV and ZMVA. They differ in function and geometry.
Advantage of our ZM precision locknutsResult of a rolling bearing assembly with a standard shaft nut or without specified axial runout. The same assembly with the precision locknut ZM/ZMV with the outcome as desired.

Planetary Roller Screws
Planetary roller screws are a particularly precise and robust form of linear drive. Their construction design produces significantly higher load capacities and rigidity compared to other linear drives, such as ball screws (KGT). This is a direct result of the so-called threaded planets used in the design. The threaded planets serve as rolling elements between the threaded spindle and the threaded nut. Another great advantage of planetary roller screws is the wide range of possible leads they offer. The multi-start thread profile of the planetary roller screws allows total spindle leads of 0.5 mm to 50 mm.
Specifications• High limiting speed and high travel speed• High axial load capacity• High axial rigidity• High positioning accuracy and very precise repeatability
TYPES
GSA AG's product range includes four types of planetary roller screws which differ in their operation modes and properties. The screws are manufactured in standard dimensions, but also according to customer-specific designs. All components are manufactured and assembled in-house at GSA AG / Gewinde Ziegler AG.
• The RGT planetary roller screw consists of the following components: threaded planets, thread rolls, threaded nut, spacer rings and gear rings. The axial load is transmitted by the threaded spindle via the threaded planets into the threaded nut. The system is synchronized through gears on the planets and via two gear rings. The spacer rings, similar to the cage in a needle bearing, ensure the distance between the thread rolls on the circumference of the threaded spindle.• The recirculating RGTR has a mechanical recirculation of the threads planets. This kinematic (recirculation) allows for the realisation of screws with small thread leads, but still with robust and load-bearing thread profiles. This also allows for smaller thread leads on spindles with large nominal diameters. The threaded planets are held in position by a cage on the circumference of the spindle, similar to how needles are held in place in a needle rolling bearing. • The RGTI with inverse design is an inverted version of the RGT. It has basically the same characteristics as the RGT and is also characterised by a high load capacity and positioning accuracy. In contrast to the RGT, in this design the threaded planets on the spindle are held in position and synchronised via the spacers and gears located on them. • The RGTRI is an inverted design of the RGTR. The only difference compared to the RGTR lies in with the thread rolls cage as well as the recess for recirculating the thread rolls being located on the spindle rather than in the threaded nut.