BEYOND D06K-STUBR06 Spring Steel Internal Boring Bar | CNC Mini Boring Tool Holder for TBGT060102 Inserts (Insert Not Included)
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BEYOND D06K-STUBR06 Spring Steel Internal Boring Bar & Turning Tool Holder (Does Not Include Inserts)
Industrial-Grade Small-Bore Internal Turning & Profiling Boring Bar for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert/blade are strictly for assembly demonstration. The matching TBGT060102 triangular carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND D06K-STUBR06 is a high-rigidity spring steel internal boring bar engineered for micro-diameter CNC lathe turning, boring, and profiling operations. Utilizing TBGT060102 triangular indexable carbide inserts, it delivers superior vibration dampening, secure screw clamping, and precise dimensional control across ISO P, M, and K workpiece materials.
1. Product Overview
"Which internal boring bar and mini turning tool holder provides maximum chatter suppression, fine clearance, and rigid insert clamping for small-bore internal profiling using TBGT060102 inserts?"
The BEYOND D06K-STUBR06 spring steel internal boring bar (frequently searched as small bore turning tool, CNC mini boring bar, and internal copy turning holder) is specifically engineered for precision internal machining in restricted pre-drilled holes. Forged from premium 60Si2Mn spring steel, the shank body provides exceptional elastic recovery and high damping coefficients to eliminate harmonic chatter during deep, narrow-diameter boring passes. The precision-milled screw clamping pocket securely seats TBGT060102 triangular carbide inserts, ensuring absolute stability and preventing micro-vibration during fine finishing operations.
ISO Model Designation Breakdown
Need alternative mini boring bar diameters or lengths?
2. Key Features
- Ultra-Rigid Spring Steel Shank: Fabricated from hardened 60Si2Mn spring steel to withstand high cantilever deflection stresses in small-bore internal turning.
- Precision TBGT Pocket Fit: Engineered clamping interface designed specifically for TBGT060102 inserts, providing tight dimensional repeatability during index changes.
- Optimized Rake & Clearance Geometry: Streamlined head design maximizes chip evacuation space inside restricted small-diameter bores.
- Superior Finish Quality: Exceptional vibration dampening produces mirror-like internal surface finishes and tight IT tolerance control.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification | Imperial Equivalent |
|---|---|---|
| Shank Diameter (D) | 6 mm | 1/4" (Approx. 0.236") |
| Overall Length (L) | 125 mm | 4.92" |
| Minimum Bore Diameter | 7.5 mm | 0.295" |
| Compatible Insert Model | TBGT060102 | TBGT 060102 Standard |
Recommended Cutting Parameters (TBGT060102 Insert) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (f, mm/rev) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 110 - 180 m/min | 0.02 - 0.06 mm/rev |
| ISO M (Stainless Steel) | 70 - 120 m/min | 0.015 - 0.05 mm/rev |
| ISO K (Cast Iron) | 100 - 160 m/min | 0.025 - 0.07 mm/rev |
4. Product Applications
- Micro-Bore Internal Turning: Precision finishing and roughing of small internal diameters in instrument parts and miniature housings.
- Internal Profiling & Undercutting: Machining intricate internal contours and relief features within narrow bores.
- Precision Bushing & Valve Body Production: Reliable tolerance control across small steel, brass, and alloy components.
- Medical & Aerospace Instrument Manufacturing: High-precision internal turning where absolute dimensional accuracy is mandatory.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard TBGT060102 triangular indexable carbide turning inserts.
Tool Holding: Mounts securely into 6mm precision split sleeves, micro-boring bar holders, and Swiss-type CNC lathe tool posts.
Clamping Hardware: Equipped with high-tensile Torx locking screws and micro-wrenches for secure insert retention.
6. Material Comparison: 60Si2Mn Spring Steel vs. Standard Carbon Steel
Vibration Suppression: Spring steel absorbs harmonic frequencies generated inside micro-bores much faster than carbon steel, preventing chatter marks and surface waviness.
Cantilever Deflection Resistance: High elastic modulus prevents tool tip bending when executing fine finishing passes at high L/D ratios.
Fatigue Endurance: Retains clamping preload and structural rigidity through extensive continuous production runs.
7. Why Choose BEYOND Tooling?
- ISO 5608 Manufacturing Standards: Certified production processes guarantee strict compliance with international mechanical properties and tolerances.
- Direct Factory Pricing: Premium metallurgical performance supplied directly from manufacturing lines without intermediate distributor markups.
- Master Machinist Support: Expert technical assistance ready to help optimize feed rates, cutting speeds, and grade selection for your application.
8. Frequently Asked Questions
Q: Does the BEYOND D06K-STUBR06 package include the TBGT insert?
A: No. To allow maximum grade flexibility depending on your specific workpiece metallurgy and coating requirements, the TBGT060102 insert is sold separately.
Q: What is the minimum pre-drilled bore diameter required for this 6mm boring bar?
A: The minimum recommended bore diameter for this tool configuration is 7.5mm, ensuring adequate clearance between the shank body and the inner wall.
Q: Is this boring bar compatible with Swiss-type CNC lathes?
A: Yes. The 6mm shank diameter is fully compatible with standard Swiss-type guide bushing blocks and gang tool posts utilizing appropriate split bushings.
Grade Comparison: PVD-coated micro-grain carbide grades provide exceptional edge sharpness and wear resistance for stainless steel micro-boring; uncoated grades excel in non-ferrous applications.
Equivalent Models: Fully cross-compatible with universal modular micro-boring tool systems adhering to standard ISO / ANSI specifications.
Troubleshooting: Surface chatter or tool deflection in small bores usually indicates overhang exceeding recommended 4x-5x diameter limits; reduce depth of cut or switch to a solid carbide shank.
Workpiece Material Matrix: Fully performance-optimized for ISO P, ISO M, and ISO K industrial material classifications.
Authoritative Endorsement: Dimensional parameters and structural design benchmarked against ISO 5608 Tool Holder Standards and certified 60Si2Mn spring steel specifications.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.