Solid Carbide Micro Boring Bars | Precision Mini Carbide Boring Tools for CNC Lathe Internal Turning

Struggling with chatter, short tool life, or poor chip evacuation in small-diameter ID turning? Our Solid Carbide Micro Boring Bars deliver 2.5× the rigidity of steel shank bars, support L/D ratios up to 6:1, and provide stable performance in deep, tight holes where conventional tools fail.

Why Choose Amony Solid Carbide Micro Boring Bars?

Maximum rigidity – 2.5× stiffer than steel bars, supports longer overhangs with minimal chatter.
Precision down to 0.8 mm bore – perfect for medical, aerospace, and mold components.
Advanced PVD coatings (AlTiN / TiAlN) for extended tool life in stainless, titanium, and hardened steel.
Optimized chip evacuation – polished flutes and geometry reduce chip packing and breakage.
Proven in real shops – reduces vibration by over 60% compared to conventional micro tools.

Quick Reference Guide: 9 Major Series

Series	Core Application	Typical Keywords	Market Positioning
MTR	Internal Boring	Small hole boring, Internal diameter finishing, Bore correction	General Purpose / Essential
MIR	Internal Threading	Internal threads, Fine pitch threads, Micro-bore threading	High Precision Threading
MGR	Internal Grooving	Recess, Sealing grooves, Snap ring grooves	Functional Grooving
MPR	Profiling & Boring	Internal contours, Tapered bores, Radius transitions	Complex Profiling
MFR	Face Grooving	Hole mouth arcs, Front R transitions, Shallow inner R	Front Radius Specialization
MKR	Full Radius Grooving	R-grooves, Circular recesses, Rounded internal contours	Full Radius Specialization
MQR	Profiling & Boring	Alternative contours, Complex internal cavities	Supplementary Profiling
MUR	90° Face & Profiling	90° shoulders, Step boring, Corner cleaning	Shoulder & Step Machining
MXR	Back Turning	Reverse boring, Back-side recesses, Hidden features	Specialized Reverse Machining