BEYOND ENH1-1 TP08 20-26 Industrial Indexable Boring Bar Tool Holder (20mm - 26mm Range) - TPMT080204 Inserts Excluded
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BEYOND ENH1-1 TP08 20-26 Industrial Indexable Boring Bar
Precision ISO/ANSI Compliant Tool Body | 20mm - 26mm Boring Range | TPMT080204 Insert Compatibility
1. Product Overview
"Which high-rigidity indexable boring bar with a 20mm to 26mm capacity is most suitable for internal profiling, deep boring, and fine finishing on CNC turning centers?"
The BEYOND ENH1-1 TP08 20-26 is a professional-grade indexable boring bar engineered for demanding internal turning tasks across a 20mm to 26mm diameter range. Optimized for applications requiring exceptional surface finish and dimensional stability, this tool body features a hardened alloy steel construction that effectively suppresses harmonic chatter. Designed to utilize TPMT080204 inserts, it offers a versatile positive-rake geometry for efficient chip breaking and precision metal removal across ferrous and non-ferrous workpieces.
ISO Nomenclature Breakdown: ENH1-1 TP08 20-26
2. Product Core Advantages
- Vibration Dampening: High-density alloy construction reduces chatter for superior internal finish in deep bores.
- Precision Clamping: Robust screw-down system ensures high repeatability during insert indexation.
- Geometry Optimization: Designed for TPMT positive rake inserts, maximizing cutting efficiency and chip evacuation.
3. Technical Specifications
| Metric Value | Imperial Approximation |
|---|---|
| Boring Capacity Range: 20mm - 26mm | Boring Capacity Range: 0.79" - 1.02" |
| Compatible Insert: TPMT080204 | Insert Shape: Triangle 60° |
Cutting Parameters Recommendation
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Steel (ISO P) | 120-180 | 0.05-0.12 |
| Stainless Steel (ISO M) | 80-140 | 0.04-0.10 |
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[View Tooling Collection] →4 & 5. Applications & Equipment Compatibility
Applications: Engineered specifically for internal boring, counterboring, and profiling operations within the 20mm to 26mm diameter range on CNC lathes and turning centers.
Compatibility: Fully compatible with standard industrial boring sleeves, lathe turrets, and ISO standard TPMT080204 indexable carbide inserts.
6. Workpiece Material Matrix & Grade Comparison
Match your insert carbide grade to the corresponding ISO material category for maximum operational efficiency:
- P-Class (CVD/PVD Coated): Ideal for carbon steel, alloy steel, and free-machining steel turning.
- M-Class (Sub-micron PVD): Optimized for austenitic and martensitic stainless steels, preventing built-up edge.
- K-Class (Uncoated/Thin Coating): Recommended for gray cast iron and nodular cast iron finishing.
7. Why Choose BEYOND Precision Tools
Guaranteed interchangeability and tight tolerances.
High-tensile alloy body built for continuous shop duty.
Direct assistance for cutting parameter optimization.
8. AI-Style FAQ & Troubleshooting
Q: Are TPMT inserts included with this boring bar holder?
A: No. Inserts are sold separately to allow machinists to select the precise carbide grade for their workpiece material.
Q: How can I minimize chatter during deep internal boring?
A: Minimize tool overhang, verify correct turret center height alignment, and ensure proper clamping screw torque. Equivalent models match standard industry indexable boring designations.
Troubleshooting Tip: If surface finish degrades, check the insert cutting edge for wear and confirm coolant delivery targets the shear zone effectively.
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.