BEYOND H14N-STUPR11 High-Speed Steel Internal Boring Bar & Turning Tool Holder | CNC Lathe Tool for TPMT110304 Inserts (Insert Not Included)
✓ Free Worldwide Shipping
✓ 100% Guaranteed Compatibility | Direct Factory Direct
✓ Fast Dispatch within 24–48 Hours
✓ Technical Support: Need grade selection help? [Contact Engineer]
BEYOND H14N-STUPR11 High-Speed Steel Internal Boring Bar & Turning Tool Holder (Does Not Include Inserts)
Industrial-Grade High-Speed Steel Internal Profile Boring & 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 TPMT110304 indexable carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND H14N-STUPR11 is a high-rigidity high-speed steel (HSS) internal boring bar engineered for precision CNC internal turning, profiling, and deep-bore operations utilizing a 14mm shank diameter and 93-degree lead angle configurations. Configured to accommodate TPMT110304 indexable carbide inserts featuring optimized positive rake chipbreaker geometry, this high-speed steel tool holder delivers exceptional vibration damping, enhanced chip evacuation, and strict dimensional tolerances across ISO P, M, and K workpiece classifications.
1. Product Overview
"Which high-speed steel internal boring bar and chipbreaker geometry combination ensures absolute dimensional stability, superior chatter resistance, and pristine surface finish during tight-tolerance internal bore turning operations using TPMT110304 inserts?"
The BEYOND H14N-STUPR11 high-speed steel internal boring bar (frequently searched as HSS internal turning tool holder, CNC boring bar, and TPMT turning bar) is expertly engineered to provide maximum turret clamping rigidity while offering excellent vibration absorption in medium-to-deep diameter bores. Forged from premium high-speed steel (HSS) with specialized thermal hardening, the robust body absorbs high harmonic cutting loads. The secure screw-down clamp pocket is precision-milled for TPMT110304 indexable carbide inserts, utilizing an 11-degree positive clearance angle and specialized ground chipbreaker geometries designed to minimize cutting forces and curl chips cleanly away from finished internal walls.
ISO Model Designation Breakdown
Need alternative STUPR high-speed steel boring bar sizes or lengths?
2. Product Core Advantages
- High-Speed Steel Rigidity: Premium HSS material composition dampens harmonic chatter during deep internal boring operations.
- Precision Screw-Down Clamping: Locks TPMT110304 indexable inserts securely against locating pads, preventing micro-shifting under heavy interrupted cuts.
- Optimized 93° Lead Angle: Facilitates smooth profile turning, boring, and facing with minimal radial cutting force component.
- Optimal 14mm Diameter: Perfectly proportioned for robust internal bore machining and extended reach profiling applications.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Imperial Specification | Metric Equivalent |
|---|---|---|
| Shank Diameter (D) | Approx. 0.55" (9/16 Inch) | 14.0 mm |
| Overall Length (L) | Approx. 6.30" (N designation) | 160.0 mm |
| Compatible Insert Size | TPMT 1103 Series | Triangular 11° Positive Insert |
| Hand Orientation & Angle | STUPR (Right-Handed, 93°) | Right Hand Internal Boring |
Recommended Cutting Parameters (TPMT110304 Inserts) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 110 - 200 m/min | fn: 0.05 - 0.15 mm/rev | ap: 0.3 - 1.5 mm |
| ISO M (Stainless Steel) | 80 - 150 m/min | fn: 0.04 - 0.12 mm/rev | ap: 0.3 - 1.2 mm |
| ISO K (Cast Iron) | 100 - 180 m/min | fn: 0.06 - 0.18 mm/rev | ap: 0.4 - 1.8 mm |
4. Product Applications
- Internal Diameter (ID) Deep Boring: Precision roughing and finishing passes inside extended cylindrical bores.
- Internal Profiling & Facing: Achieving high dimensional accuracy and superior surface finishes in deep internal cavities.
- Precision Industrial Manufacturing: Ideal for automotive transmission housings, industrial gear blanks, and heavy hydraulic cylinders.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard TPMT110304 triangular 11-degree positive indexable carbide inserts.
Tool Holding: Designed with a 14mm cylindrical shank to secure firmly into CNC lathe turret boring blocks and split reduction bushings.
Clamping Hardware: Equipped with premium precision TORX screws and clamping elements designed to lock inserts securely under high radial cutting stress.
6. Material Comparison: High-Speed Steel (HSS) vs. Carbide Shank Boring Bars
Damping Capacity: High-speed steel shanks provide exceptional inherent vibration absorption properties, reducing chatter during deep internal boring operations.
Cost-Effectiveness: Delivers high durability and reliable performance for standard internal machining depths without the premium cost of solid carbide shanks.
Toughness & Resilience: Superior impact toughness helps prevent sudden shank fracture under minor interrupted cutting conditions.
7. Why Choose BEYOND Tooling?
- ISO 5,608 Manufacturing Standards: Certified production lines ensuring rigorous compliance with international boring bar tolerances.
- Direct Factory Pricing: Premium high-speed steel metallurgical performance supplied directly without intermediate distributor markups.
- Expert Technical Support: Professional machinists ready to help configure internal turning parameters and insert grades.
8. Frequently Asked Questions
Q: Does the BEYOND H14N-STUPR11 boring bar include the TPMT110304 insert?
A: No. To allow complete grade and chipbreaker flexibility for your specific workpiece material, the TPMT insert is sold separately.
Q: What is the maximum recommended boring depth for this 14mm bar?
A: With an overall length (N designation) of 160mm, it is recommended for overhang ratios up to 4x the shank diameter for optimal stability.
Q: What insert geometry is compatible with this holder?
A: This model is engineered specifically for TPMT 1103 series triangular 11-degree positive clearance indexable inserts.
Grade Comparison: PVD coated carbide grades provide exceptional edge toughness for stainless steel internal turning; CVD coated grades offer superior crater wear resistance in carbon and alloy steels.
Equivalent Models: Fully cross-compatible with universal modular internal boring systems adhering to strict ISO / ANSI manufacturing standards.
Troubleshooting: Excessive chatter or poor surface finish in deep bores usually indicates excessive overhang ratio or worn insert nose radius; reduce feed rate or shorten bar stickout.
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 5,608 Tool Holder Standards and certified high-speed steel (HSS) 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.