Autocentrante automatico DURO-A

The DURO‑A self‑centering chuck by Röhm combines high spindle speeds, exceptional clamping force and minimal run‑out, making it perfect for fully automated CNC turning of cylindrical and disc‑shaped workpieces. Its integrated hydraulic actuation within the CNC lathe drives a piston inside the steel base body; inclined planes and a 90° tooth profile on the three jaws enable both external clamping and, by reversing oil flow, internal gripping of components such as rings. The DURO‑A sustains constant clamping force for over 500,000 cycles—with peaks up to 30 % higher than comparable chucks—accommodates bar stock up to 30 % larger and achieves maximum speeds up to 35 % greater thanks to its optimized design, which also reduces overall weight by roughly 10 % while enlarging the working envelope. High concentricity of 0.01 mm, ensured by precision‑ground jaw surfaces and meticulous manufacturing, together with an excellent cost‑performance ratio, make the DURO‑A the preferred choice for operators of automatic finishing machines across a broad spectrum of applications.