Product Catalogue Rotary Unions Slip Rings Precision Air Bearings Test Rig Technology

Our Company GAT – Gesellschaft für Antriebstechnik mbH headquartered in Geisenheim, Germany, is a leading international technology venture, engineering and producing tailored products for the most diverse industry applications in the fluid and sealing technology sectors as well as electrotechnical transmission technology for more than 30 years. The company is the technology leader in the production of rotary unions, electrical slip rings, precision air bearings, test rig equipment as well as special equipment. Our team of highly qualified engineers and product specialists offers competent expert...

Our Quality Repairs are as annoying as downtimes are costly. We at GAT take every effort to develop and manufacture products that yield a long service life and utmost reliability. GAT products are subject to long operating periods, extreme loads and demanding operating conditions. That is why all parts must be manufactured as accurately as possible. During the initial product design only cutting-edge processes and high-quality materials are used. GAT products are developed with the help of powerful 3D CAD systems, and FEA serves for the simulation and optimization of critical parts. Machining...

Our References Our technically elaborated products are used wherever uncompromised reliability under the most adverse operating conditions is crucial. When it comes to ensuring system availability our products play a key role: ■ In wind turbines, our hydraulic rotary unions and slip rings allow correct adjustment of blade pitch to wind direction, even under rough conditions. ■ Thanks to the reliable supply of coolant to milling spindles, production runs smoothly even at high utilization rates. The production rates of rolling mills can be increased as the rotary union ensures a reliable supply...

Rotary Unions ROTOSTAT® E 02-05 Slip Rings ROTOSTAT® A, ROTOCAL, ROTODOCK 50 ROTOGUIDE, GAT Test Rig Technology 51

Hydrostatically regulated radial gap seal Pressures up to 600 bar Speeds up to 20,000 rpm Wear-free ceramic coating Extremely minimal leakage in primary sealing system For flow rates up to 300 l/min Low mechanical loss Design and Function The ROTOSTAT® E series consists of wear-free hydrostatically regulated radial gap seal systems with self-centring sealing bushings. The patented sealing principle enables reliable operation under very high pressures and at high speeds. The critical load areas in the primary and secondary sealing sections are provided with resistant coatings and finished with...

ROTOSTAT® E 15 - 80 Technical Data ROTOSTAT® E Standard Even larger shaft diameters available on request.

Special Designs ROTOSTAT® M40 EX2-S, Type 5736 – 3,500 rpm / Hydraulic Oil, 350 bar ROTOSTAT® M360 EX2-1-S, Type 6530 – 1,120 rpm / Hydraulic Oil, 140 bar 15 ROTOSTAT® M60 EX5, Type 8161 – 3,000 rpm / Hydraulic Oil, 220 bar 70

ROTOSTAT® E Leakage Rotostat EL (air) Leakage ROTOSTAT® EL (Air) T = 20 °C Leakage in Ndm /min Leakage in Ndm³/min 3 Leakage Rotostat EX (oil) Leakage ROTOSTAT® EX (Oil) at 46 cSt Leakage in cm³/min Leakage in cm /min 3 Pressure Drop ROTOSTAT® E Hydraulic Oil at 46 cSt pressure drop Pressure drop in bar in bar 100 Flow in l/min flow in l/min

Rotary Unions Axial Gap Seal Product Features Hydrostatically regulated gap seal Pressures up to 250 bar Speeds up to 20,000 rpm Flow rates up to 700 l/min Contact- and wear-free sealing system Dry-running sealing bushing For oil and aqueous liquids Design and Function The ROTOSTAT® N series consists of contact-free hydrostatic gap seals. A patented inverse gap regulator ensures that the gap between stationary and rotating parts is maintained constantly at a few μm even under high pressures, so that the resultant leakage is very low. Friction losses are also kept at an extremely low level, thanks...

All figures have been determined in trials and are to be regarded as guidelines for oil with a viscosity of von 20 cm2/s. Deviations are therefore possible. ROTOSTATE® for use with aggressive media can be supplied. Please contact us for further details.

Installation Dimensions („Multiple“ Version) 1 These multiple rotary unions are composed of single standardized elements which can be used as a complete unit: for installation on a continuous shaft or as final unit with a flange-on shaft Single and multiple way rotary unions can be mounted by fitting individual elements together (the number depends on the shaft diameter!). The oil liquid is discharged via the housing part. Please note: The individual versions may vary optically! Screw fittings are not included! Leek leakage 'Max. values **Request dimension if required (SAE-flange)

Detailed flange dimensions are according to the relevant GAT drawing.

ROTOSTAT® N Hydraulic Circuit Diagrams Under rotation the ROTOSTAT® N should always operate with a minimum pressure (5 bar lubrication pressure), in order to preserve the hydrostatic control. Special hydraulic ciruits are required for this purpose. Hydraulic motor pressurised on one side Hydraulic motor pressurised on both sides Hydraulic motor pressurised on one side Hydraulic motor pressurised on both sides 1. Hydraulic pump 2. Pressure limiting valve 3. Oil filter with bypass 4. Pre-tensioning valve

For pressures up to 140 bar at 42,000 rpm Hydrostatically released axial contact seals Ultra-hard seal rings made from silicon carbide No coolant leakage after media flow is stopped Robust precision steel housing Safe for dry operation Design and Function The ROTODISK S series consists of single channel, axial rotary unions with hydrostatically released ceramic contact seals and an automatic alignment compensation system, which ensures that the contact seals always have full surface contact. The hydrostatic release ensures that the friction moment is low, which also means that wear is minimal...