ID static holders carry boring bars and internal turning tools, sized to the turret's bore and clamped on the same mounting as the rest of the station. Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies them to mount on Miyano turrets.
Developed specifically for Miyano (Citizen-Miyano) high-performance automatic lathes, providing robust support for internal turning, drilling, and fine boring operations. Optimized for the compact turret layouts of Miyano machines (such as the BNA, BNJ, and ABX series), these toolholders ensure exceptional axial accuracy and vibration damping within tight machining envelopes—helping customers achieve micron-level precision for internal diameters.
Build features
Superior Center-Height & Concentricity — Through rigorous grinding processes, the toolholder ensures precise alignment with the machine spindle centerline. This effectively prevents deflection and ensures diameter consistency when performing small-diameter deep-hole machining on Miyano machines.
Enhanced Clamping Rigidity & Damping — Specifically designed with a reinforced clamping system to address vibrations common in I.D. machining. It effectively suppresses resonance even when using slender boring bars, ensuring mirror-like surface finishes for internal holes.
Precision Internal Coolant Delivery — Supports high-efficiency internal coolant delivery, directing fluid precisely into the depth of the hole. This not only dissipates cutting heat rapidly but also ensures smooth chip evacuation during blind-hole machining, preventing chips from scratching the internal walls.
Ultra-Precision Heat-Treated Alloy Steel — Manufactured from premium alloy steel, offering excellent thermal stability and wear resistance. It maintains structural integrity even under 24/7 high-efficiency mass production environments on Miyano machines, ensuring long-term machining stability.
Perfect Miyano Turret Compatibility — Fully compliant with Miyano OEM turret interface specifications, ensuring easy installation and precise positioning. It helps customers leverage the high repeatability advantages of their machines during multitasking operations.
Miyano machines this holder is built for
8 Miyano models. Where the turret interface is published it is shown; where it is blank the interface depends on the turret actually fitted and is confirmed at enquiry.
The machine model alone does not decide the holder. The same model can leave the factory with
different turrets — station count, model suffix and key arrangement all change the mounting. Tell us the
machine, the turret and the operation and we confirm the mounting before quoting.
Already using another brand? Send the drawing or the article number of the holder you run today
and Mongtec will convert it to an equivalent Mongtec holder — same mounting, same reach, same output.