The IDRO-P-A-R 2+2 from ROTOMORS is a self-centering power chuck employing a 2+2 jaw configuration — two independent opposed jaw pairs that operate simultaneously for balanced, four-point clamping while maintaining the self-centering accuracy of the IDRO series platform. Each jaw pair applies diametrically opposed clamping force, minimizing the radial loading that can deflect slender workpieces in conventional 3-jaw or single-pair 2-jaw setups.

What does "2+2" mean in jaw configuration?

The 2+2 designation describes a dual opposed-pair layout: two pairs of opposing jaws, each pair operating on its own actuation axis, driven simultaneously from a common hydraulic or pneumatic source. The result is four-point workpiece contact with perfectly balanced radial forces — no net side load on the workpiece or spindle bearings. This configuration is particularly effective for thin-walled tubular parts, rings, and components where clamping distortion must be minimized. It also provides redundancy: each jaw pair independently centers the workpiece, so the combined system achieves higher centering repeatability than a single-pair 2-jaw chuck of equivalent size.

About ROTOMORS

ROTOMORS, based in Italy, manufactures a range of power chucks including the MINI IDRO indexing series and the IDRO-P self-centering series for CNC turning and machining applications. Technical specifications — including available diameters, clamping force curves, jaw stroke, and maximum RPM — are provided in the manufacturer's catalog or through authorized distributors.