Rotary CONCENTRIC RK-3 Hydronut is the world leader in high-pressure clamping and tensioning solutions, with a worldwide reputation for quality and reliability. Based in Inidia (Gujrat), Rotary CONCENTRIC has decades of experience in the engineering and manufacture of hydraulic nuts, pre-tensioning devices, Hydraulic Expanding Mandrels, Collets, arbor, Fixture components. Our hydraulic clamping components are designed to withstand severe operating conditions in casters, rolling mills, metal processing and forming lines, presses, turbine and aircraft engine broaching machines, and machine tools, auto parts Industry. Rotary CONCENTRIC RK-3 Hydronut has a wide range of standard hydraulic nut sizes to fit most machine and tool-clamping applications. In addition, our custom-engineering capabilities allow us to address specific clamping or pre-tensioning requirements using Special Jelly (REX SHU 25/35). also customized solutions available. For more details contact us at the following email address & also visit our websites. ​www.rotarymandrels.com www.concentricarbors.in www.indiamart.com/rotaryengineering/ 1St >>> E-mail: RECmandrels@gmail.com 2Nd>>>E-mail: info@rotarymandrels.com