Achieve high connection stiffness, sub-micron positioning repeatability, and chatter-free performance during heavy internal boring, profiling, and thread-cutting sequences with industrial-grade Boring Bar Holders PSC (polygon shank boring units). Designed with a precision-ground polygon shank (PSC interface), these heavy-duty toolholders lock self-centeringly into modular quick-change turning turrets and spindles. Featuring a precision-bored cylindrical clamping sleeve with inline high-tensile clamping screws and internal coolant supply passages, they ensure uniform radial clamping force along the boring bar shank while delivering high-pressure coolant straight to the internal cutting edge.
