MIR TR 30 Degree Trapezoidal Internal Threading Boring Bar for Steel CNC Machine Boring Tools Anti Vibration Miniature Precision

MIR/MIL micro boring-threading bars: one-piece tungsten carbide tools engineered for Swiss-type lathes and CNC turning centers, threading and boring small and micro-diameter holes in one setup. Designed for micro-precision shops that need insert-class threading quality in bore sizes where standard holders cannot reach. Internal and external threading: MIR series for internal threads, MIL series for external threads, plus MIRS double-end bars that give two usable cutting ends in one holder for longer life and fewer tool changes. Wide size coverage: MIR1 to MIR8 cutting-edge series, A60 and A55 profile options, D4 shank types, multiple cutting lengths, and 50-70 mm overall lengths for deep-bore reach. Trapezoidal and ACME thread bars: TR1.5-TR5.0 trapezoidal series and 12/14/16 ACME series for lead screws, actuators and power-transmission components. Solid carbide design: one-piece tungsten carbide body with a slim extended neck and stepped relief reaches deep small holes where insert-type tools cannot fit; the micro-pointed tip cuts clean threads with low cutting force and low deflection. Vibration control: the rigid carbide body dampens chatter in small-hole internal threading, giving smoother thread flanks, fewer burrs and more stable thread accuracy, especially in blind holes and stepped bores. Machine fit: built for Swiss-type (sliding headstock) and CNC turning machines; right-hand and left-hand threading supported, with MIL left-hand version available. Applications: fine internal and external threads, small-bore boring and micro components for automotive, electronics, medical and instrumentation industries, such as threaded fittings, small shafts and precision connectors. Practical benefits: cleaner threads with fewer burrs reduce secondary operations, supporting consistent quality on demanding small-diameter work. Supply: items in stock and dispatched within 48 hours; custom sizes and bulk orders welcome.

YOGOU (Zhongshan) Precision Cutting Tools Co., Ltd., 20+ years in high-end precision tooling. Positioning: Micro Precision. Made To Measure. Philosophy: technology-driven innovation, quality-built trust.

Every tool is engineered from real shop-floor conditions - micro bores no standard tool can reach, long overhangs that deflect and chatter, stainless steels that work-harden and weld to the edge, and special geometries with no standard tooling available. We deliver international-class performance at an accessible price.

Factory: 7,000 sqm base, 100+ international CNC grinding machines, 95% automation. Design, precision grinding, coating and full-chain inspection fully in-house - micron-level tolerance, stable volume production of tools down to 1.0 mm, no outsourcing variability.

Quality: five inspection gates - incoming, in-process, pre-coating, post-coating, final - with full traceability from rod to shipment. ISO 9001 certified; national high-tech enterprise; invention, utility-model and design patents.

R&D & custom: engineering partnerships with universities and research institutes; drawing-to-delivery non-standard tooling; OEM/ODM; application engineering and tool-selection support. We sell machining solutions, not just tools.

Range: solid carbide rod tools, indexable inserts, exchangeable modular tools and custom tools. Boring system covers the complete internal sequence - boring, profile turning, grooving, threading - for bores from 1.0 mm, in standard and SSS stainless grades; thread mills across 7 standards, M1.0-M24.

Applications: aerospace, mold & die, EV automotive, 3C electronics. Markets: 50+ countries across Europe, the Americas, Southeast Asia and the Middle East; 500+ distributors and OEM customers.

Delivery: in-stock tools ship within 48 hours; custom tools within 14 days; small batches welcome.

Can you make custom tools to my drawing?

Yes. Send us your component drawing or sample, and our engineers respond with a machining proposal - from design and trial cutting to delivery. Custom tools are typically delivered within 14 days.

What is your minimum order quantity (MOQ)?

Small batches are welcome. We support flexible order sizes from trial quantities to volume production, with in-stock tools shipped within 48 hours.

Are left-hand versions available?

Yes. Most series offer full left-hand variants (e.g. MFR/MFL, MZR/MZL, MGR/MGL, MAR/MAL, MVR/MVL, MXR/MXL, MDR/MDL) to suit any spindle direction.