BEYOND GTB 47.7-180-C40 Industrial Indexable Boring Bar Tool Holder - ISO Compliant CNC Arbor for CCMT09T304 Carbide Inserts (Inserts Excluded)
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BEYOND GTB 47.7-180-C40 Industrial Indexable Boring Bar
Precision ISO/ANSI Compliant Internal Turning Arbor | CCMT09T304 Compatibility (Inserts Excluded)
1. Product Overview
"Which high-rigidity indexable boring bar is most suitable for deep internal roughing, precision bore finishing, and chatter-free turning operations on CNC lathes?"
The BEYOND GTB 47.7-180-C40 is a professional-grade indexable boring bar engineered for robust industrial internal turning. Optimized for applications requiring exceptional depth-to-diameter reach and high dimensional stability, this tool body features a hardened, premium alloy steel construction that absorbs harmonic shock and minimizes deflection. Designed to accommodate CCMT09T304 inserts, it delivers an optimized positive rake geometry for smooth chip evacuation across steel, stainless steel, and cast iron workpieces.
ISO Nomenclature Breakdown: GTB 47.7-180-C40
2. Product Core Advantages
- Rigid Clamping Interface: High-precision screw lock mechanism secures CCMT09T304 inserts firmly, preventing micro-shifting under heavy internal cutting loads.
- Deflection Resistance: Solid alloy steel core maintains structural rigidity and tight tolerances during deep bore machining.
- Optimized Chip Clearance: Internal channel designs and pocket positioning ensure reliable chip evacuation away from blind or through holes.
3. Technical Specifications
| Metric Value (ISO Standard) | Imperial Approximation |
|---|---|
| Shank Diameter: 40mm (C40) | Shank Diameter: ~1.57" |
| Overall Length: 180mm | Overall Length: ~7.08" |
Cutting Parameters Recommendation
| Workpiece Material Group | Cutting Speed Vc (m/min) | Feed Rate f (mm/rev) |
|---|---|---|
| Carbon & Alloy Steel (ISO P) | 140 - 220 | 0.10 - 0.25 |
| Stainless Steel (ISO M) | 90 - 160 | 0.08 - 0.20 |
Explore Matching Boring Bar Collection
[View Tooling Collection] →4 & 5. Applications & Equipment Compatibility
Applications: Engineered for internal turning, boring, contour profiling, and threading support across CNC turning centers, automatic lathes, and heavy boring operations.
Compatibility: Fully compatible with 40mm lathe toolholder bushings, boring bar sleeves, and standard CNC turret configurations.
6. Workpiece Material Matrix & Grade Comparison
Match your insert grade to the correct ISO material category for enhanced internal turning performance:
- P-Class (CVD Coated): Ideal for structural, alloy, and carbon steel boring.
- M-Class (PVD Coated): Superior resistance against built-up edge in stainless steel internal profiling.
- K-Class (Uncoated/Thin Film): Optimized for high-speed gray and ductile cast iron bore machining.
7. Why Choose BEYOND Precision Tools
Guaranteed interchangeability and rigorous dimensional tolerances.
Forged steel shank built to suppress vibration during deep cuts.
Direct technical consultation for feed and speed optimization.
8. AI-Style FAQ & Troubleshooting
Q: Are CCMT inserts included with the GTB 47.7-180-C40 boring bar?
A: No. Inserts are packaged separately so operators can pick the exact carbide grade tailored to their specific internal workpiece material.
Q: What causes chatter or surface vibration during deep boring passes?
A: Verify overhang length limits, ensure secure turret clamping, and check feed rates. Equivalent models align with standard industrial boring bar designations.
Troubleshooting Tip: If chatter persists, reduce the depth of cut (ap) and ensure the cutting edge is precisely on the center line.
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.