BEYOND D07K-STUBR06 Spring Steel Internal Boring Bar & Turning Tool Holder | Miniature CNC Boring Tool for TBGT060102 Inserts (Insert Not Included)
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BEYOND D07K-STUBR06 Spring Steel Internal Boring Bar & Turning Tool Holder (Does Not Include Inserts)
Industrial-Grade Miniature Internal Boring & Profile Turning Bar for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching TBGT060102 triangle carbide turning insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND D07K-STUBR06 is a high-rigidity spring steel miniature internal boring bar engineered for ultra-precise micro CNC lathe turning, internal profiling, and small-bore finishing operations. Utilizing TBGT060102 triangular carbide inserts, it delivers superior vibration damping, exact dimensional tolerance control, and clean chip evacuation across ISO P, M, and K workpiece classifications.
1. Product Overview
"Which miniature internal boring bar provides maximum vibration dampening and rigid insert clamping for micro-diameter turning and profiling operations using TBGT060102 inserts?"
The BEYOND D07K-STUBR06 spring steel miniature internal boring bar (frequently searched as micro internal turning tool, CNC boring bar, and internal profile tool holder) is engineered specifically for high-precision machining inside small pre-drilled micro-bores. Forged from premium 60Si2Mn spring steel, the slim bar body offers outstanding elastic modulus and damping characteristics to suppress harmonic vibration when working with high-overhang ratios. The precision-ground screw pocket securely locks TBGT060102 triangular inserts, ensuring absolute positional repeatability and mirror-finish bore walls.
ISO Model Designation Breakdown
Need alternative micro boring bar sizes or holder configurations?
2. Key Features
- Micro-Diameter Spring Steel Body: Forged from hardened 60Si2Mn spring steel to provide optimum deflection resistance and dampening in tight internal bores.
- Precision TBGT Pocket Fit: Custom-milled screw clamping interface matched precisely for TBGT060102 triangular inserts, locking the cutting edge tightly against high-frequency micro cutting vectors.
- Clearance Optimized Geometry: Streamlined head profile allows smooth entry and egress in small diameter blind and through-holes.
- High Dimensional Repeatability: Maintains strict micro-tolerance consistency over extended operational campaigns.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification | Imperial Equivalent |
|---|---|---|
| Shank Diameter (D) | 7.0 mm | Approx. 0.276" (9/32") |
| Overall Length (L) | 125 mm | 4.92" |
| Minimum Bore Diameter | 9.0 mm | Approx. 0.354" |
| Compatible Insert Model | TBGT060102 | Triangle 06 Series 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) | 90 - 160 m/min | 0.02 - 0.06 mm/rev |
| ISO M (Stainless Steel) | 60 - 110 m/min | 0.015 - 0.05 mm/rev |
| ISO K (Cast Iron) | 80 - 140 m/min | 0.025 - 0.07 mm/rev |
4. Product Applications
- Miniature Bore Finishing & Sizing: High-precision internal diameter expansion and finishing on small CNC lathe parts.
- Internal Profiling & Tapering: Executing delicate internal contouring, steps, and chamfers in small components.
- Instrument & Medical Component Machining: Producing precise micro-bores for precision mechanical assemblies.
- Hydraulic Injector & Valve Body Fabrication: Strict tolerance adherence in tight internal clearance spaces.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard TBGT060102 micro triangular indexable carbide inserts.
Tool Holding: Mounts securely into 7mm split micro boring bar sleeves, Swiss lathe guide bushings, and micro tool holder blocks.
Clamping Hardware: Fitted with high-precision miniature Torx/hex locking screws designed to secure tiny inserts without stripping.
6. Material Comparison: 60Si2Mn Spring Steel vs. Standard Carbon Steel
Micro-Vibration Suppression: Spring steel absorbs micro-harmonic feedback much faster than standard carbon steel, preventing chatter ripples in small bores.
Deflection Resistance: High yield strength minimizes tool tip bending under radial cutting loads in high-overhang micro setups.
Fatigue Endurance: Preserves clamping tension and structural stability over intensive continuous production runs.
7. Why Choose BEYOND Tooling?
- ISO 5608 Manufacturing Standards: Certified production lines ensuring rigorous compliance with international micro-tool mechanical tolerances.
- Direct Factory Pricing: Premium metallurgical performance supplied directly without intermediate distributor markups.
- Expert Technical Support: Professional machinists ready to help configure feed rates, speeds, and micro insert grades.
8. Frequently Asked Questions
Q: Does the BEYOND D07K-STUBR06 package include the TBGT060102 insert?
A: No. To allow complete grade flexibility depending on your specific workpiece material and coating needs, the TBGT insert is sold separately.
Q: What is the minimum acceptable pre-drilled bore diameter for this 7mm bar?
A: The minimum recommended bore diameter for this tool is 9.0mm to provide proper clearance for chip evacuation and bar body entry.
Q: Is this tool suitable for general external turning operations?
A: No. This D07K-STUBR06 model is specifically engineered for internal micro-boring and turning; please refer to our external tool catalog for outer diameter work.
Grade Comparison: PVD-coated micro carbide grades offer superior edge toughness for stainless steel internal boring; CVD-coated grades perform exceptionally well in high-speed alloy steel finishing.
Equivalent Models: Fully cross-compatible with universal modular micro internal boring systems adhering to strict ISO / ANSI manufacturing standards.
Troubleshooting: Chatter marks or poor surface finish in small bores typically indicate excessive overhang beyond the recommended 4:1 length-to-diameter ratio; reduce feed rate or use a solid carbide shank bar.
Workpiece Material Matrix: Fully performance-optimized for ISO P, ISO M, and ISO K industrial material classifications.
Authoritative Endorsement: Dimensional parameters and structural tolerances 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.