THREE POSITION BORING BAR HOLDER

External coolant supply

Designed for Miyano-system CNC lathes, this Three Position Boring Bar Holder enables three independent boring bar mounting positions within a single tooling unit, significantly reducing turret station consumption and maximizing machining flexibility on complex multi-step bore operations. Engineered for high rigidity and repeat positioning accuracy, the holder features precision-ground clamping bores with tight dimensional tolerances to minimize runout and ensure consistent cutting performance. External coolant supply ports are integrated to deliver targeted cooling directly to the cutting zone, extending tool life and improving chip evacuation in deep-bore applications. Compatible with standard boring bar diameters, the holder supports quick tool changeover with secure clamping force to withstand interrupted cuts and heavy radial loads. The compact body profile reduces interference risk in tight workpiece geometries. Key specifications: three-position layout, external coolant supply, high-precision clamping bore, compatible with Miyano CNC turret systems. Ideal for automotive, medical, and precision parts machining where bore quality, cycle time reduction, and tooling economy are critical.