BEYOND S20Q-KTGFR16-25D Spring Steel Internal Grooving Boring Bar – 20mm Shank CNC Lathe Tooling for TGF32L Inserts (Insert Not Included)
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BEYOND S20Q-KTGFR16-25D 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 provides the ideal balance of vibration resistance and rigidity for 20mm bore sizing applications?"
The BEYOND S20Q-KTGFR16-25D is an advanced, industrial-grade internal grooving boring bar engineered for high-precision CNC lathe applications. Fabricated from premium heat-treated spring steel, this 20mm diameter shank ensures exceptional vibration damping during deep bore recessing, face grooving, and parting tasks. Designed to securely index TGF32L carbide inserts, it offers tight dimensional accuracy, stable chip control, and extended tool life.
Tool holder model explanation: S20Q-KTGFR16-25D
2. Product Core Advantages
- Spring Steel Core: Effectively minimizes chatter and deflection during internal profiling and grooving.
- Precision Screw Clamping: Locks the TGF32L insert tightly to eliminate micro-shift under heavy loads.
- Optimized Pocket Geometry: Promotes smooth chip evacuation away from blind or through holes.
3. Technical Specifications & Cutting Data
| Metric Specification | Imperial Approximation |
|---|---|
| Metric Model: S20Q-KTGFR16-25D | Imperial Class: 0.75" Shank Boring Bar |
| Shank Diameter: 20 mm | Shank Diameter: ~0.787 Inches |
Recommended Starting Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steel (ISO P) | 100 - 180 m/min | 0.05 - 0.15 mm/rev |
| Stainless Steel (ISO M) | 70 - 130 m/min | 0.04 - 0.12 mm/rev |
Browse Related Internal Tooling Catalog
[View Boring Bar Catalog] →4. Product Application Scenarios
Essential for internal face grooving, circlip recessing, and profiling within medium-diameter bores (minimum bore clearance required). Widely applied in automotive transmission component production, hydraulic valve bodies, and general CNC precision machining operations.
5. Compatibility
Compatible with standard 20mm internal boring bar split sleeves and CNC lathe turret block holders. Designed specifically to pair with TGF32L indexable carbide inserts.
6. Troubleshooting & Material Matrix
Troubleshooting Tip: If stringy chips cause surface scratching, increase coolant pressure or adjust feed rate slightly to encourage broken chip segments.
| Workpiece Material | Equivalent Grade Strategy |
|---|---|
| Alloy / Carbon Steel (P) | CVD/PVD Coated Carbide for High Abrasion Resistance |
| Stainless Steel (M) | Tough Micro-Grain Carbide to Prevent Built-Up Edge |
7. Why Choose BEYOND Precision
Strict dimensional control.
Optimized for deep boring rigidity.
8. AI-Style FAQ
Q: Are TGF32L inserts bundled with this boring bar?
A: No, inserts are sold separately to let you choose the precise grade matching your metal alloy.
Q: What is the maximum boring depth recommended for S20Q?
A: The Q designation specifies a 180mm overall length, suited for stable internal profiling up to standard overhang limits.
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.