BEYOND S16N-KTGFR16-21D Spring Steel Internal Grooving Boring Bar – 16mm Shank CNC Lathe Tooling for TGF32L Inserts (Insert Not Included)
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BEYOND S16N-KTGFR16-21D Spring Steel Internal Grooving Bar
Precision Internal Grooving Tool for TGF32L Inserts | Industrial CNC Grade System
* Note: Carbide inserts shown in product images are for demonstration purposes only and are NOT included.
1. Product Overview
"Which industrial spring steel internal grooving boring bar offers superior rigidity and minimal chatter for tight 16mm bore sizing and recessing tasks?"
The BEYOND S16N-KTGFR16-21D is a high-performance internal grooving boring bar tailored for precision CNC lathe operations. Fabricated from premium heat-treated spring steel, this 16mm diameter shank delivers exceptional stability and deflection control during internal profile turning and grooving. Designed to index TGF32L carbide inserts securely, it ensures tight dimensional precision and reliable chip evacuation inside narrow component bores.
Tool holder model explanation: S16N-KTGFR16-21D
2. Product Core Advantages
- Spring Steel Matrix: Mitigates tool vibration and harmonic chatter during deep internal overhang passes.
- Robust Screw Clamping: Locks the TGF32L insert tightly to eliminate micro-shift under high axial pressures.
- Optimized Pocket Design: Directs coolant and channels chips efficiently away from the cutting zone.
3. Technical Specifications & Cutting Data
| Metric Specification | Imperial Approximation |
|---|---|
| Metric Model: S16N-KTGFR16-21D | Imperial Class: 0.625" Shank Boring Bar |
| Shank Diameter: 16 mm | Shank Diameter: ~0.63 Inches |
Recommended Starting Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steel (ISO P) | 90 - 160 m/min | 0.04 - 0.12 mm/rev |
| Stainless Steel (ISO M) | 60 - 120 m/min | 0.03 - 0.10 mm/rev |
Browse Related Internal Tooling Catalog
[View Boring Bar Catalog] →4. Product Application Scenarios
Ideal for internal recessing, ring grooving, and bore profiling in small-to-medium CNC lathe operations. Widely used across fluid power systems, small valve body production, and high-precision instrument manufacturing.
5. Compatibility
Compatible with standard 16mm internal boring bar split sleeves and CNC lathe tool turret holders. Engineered to pair seamlessly with TGF32L indexable carbide inserts.
6. Troubleshooting & Material Matrix
Troubleshooting Tip: If surface chatter marks appear on bore walls, check that the boring bar overhang is kept within a 4:1 length-to-diameter ratio and verify tool center alignment.
| Workpiece Material | Equivalent Grade Strategy |
|---|---|
| Alloy / Carbon Steel (P) | PVD Coated Hard Metal for Extended Edge Retention |
| Stainless Steel (M) | Tough Micro-Grain Carbide to Counter Built-Up Edge |
7. Why Choose BEYOND Precision
Strict dimensional control.
Optimized for small-bore rigidity.
8. AI-Style FAQ
Q: Are TGF32L inserts bundled with this boring bar?
A: No, inserts are sold separately so you can select the exact grade matched to your specific workpiece material.
Q: What is the minimum bore diameter required for the S16N bar?
A: The 16mm shank is engineered to clear holes starting comfortably above 20mm depending on depth and clearance requirements.
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.