TBGT060104L PR930

Product Overview

TBGT060104L PR930 is authentic original Kyocera single-sided positive triangular coated carbide micro boring insert, professionally developed for universal semi-finish and mirror fine finishing of miniature thin-wall stainless steel and alloy steel micro parts. Equipped with L left-hand dedicated cutting geometry, ultra-slim 1.59mm thin substrate and balanced R0.4 micro nose radius, each insert provides three independent reusable cutting edges to lower single-piece tool consumption cost. Adopting PR930 nano smooth anti-sticking PVD coating substrate, it perfectly matches STUPR06 slim left-handed micro boring bars and EZ-Bar deep tiny hole tool system. The 11° extra large positive rake drastically reduces cutting load and thin-wall elastic deformation, suitable for both smooth continuous high-speed finishing and mild slight interrupted low-feed cutting. Widely applied on Swiss sliding head automatic lathes and small precision CNC lathes for medical micro implants, automotive electronic micro sensors, miniature hydraulic micro valves and watch micro hardware balanced semi-finish batch machining.

Key Features

• 11° extra large positive rake sharp cutting edge design, ultra-low cutting resistance, effectively eliminate deformation of ultra-thin-wall sensitive micro metal parts under light & medium feed parameters
• Equilateral triangular single-sided compact structure with three independent usable cutting edges, cost-effective choice for high-volume miniature precision finishing workshops
• Ultra-slim 1.59mm thin insert body, slim narrow profile easily reaches deep narrow blind tiny holes unreachable by standard large-size boring inserts
• L symmetrical left-hand exclusive cutting geometry, perfect matching miniature left internal boring bars for reverse deep inner hole semi-fine precision processing
• PR930 MEGACOAT NANO nano AlTiN multi-layer coating, ultra-smooth lubricating surface thoroughly solves stainless steel chip sticking and residual burr problems during high-speed continuous finishing
• Ultra-fine gradient grain carbide substrate, balanced abrasion resistance and slight edge toughness, prevents micro chipping under mild uneven blank interrupted finishing
• Miniature IC6.35 compact size, compatible with all mainstream slim micro boring bar systems for automatic lathe micro part production
• Standard precision micro positioning hole, high repeat indexing accuracy after edge replacement, consistent dimensional tolerance and uniform surface roughness for long continuous batch production

Technical Specifications

Applicable Workpiece Materials

• Mild carbon steel, low alloy structural steel, 304/316 austenitic stainless steel, duplex stainless steel, free-cutting steel, low-hardness pre-hardened mold steel

Typical Industrial Application Scenarios

Machining Operations

• Balanced semi & mirror fine inner hole boring, deep miniature blind hole precision finishing, ultra-thin wall low-deformation stainless steel micro part turning, small miniature shaft smooth surface semi-finishing

Mass Production Workpieces

• Medical precision micro hardware: thin stainless micro tube, miniature implant fitting semi-mirror surface finishing
• Automotive electronics: tiny stainless micro sensor sleeve, miniature wiring terminal deep inner hole balanced precision boring
• Hydraulic & pneumatic micro hardware: micro thin-wall valve sleeve, miniature pipe joint sealing surface semi-fine machining
• Watch & micro machinery: tiny thin steel micro shaft, miniature positioning sleeve batch balanced surface production
• Swiss automatic lathe micro parts: miniature steel fastener, seamless thin stainless steel tube inner hole semi-finish precision processing