SRGCL1616H08 External Turning Tool Holder for RCMT Inserts – BEYOND
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SRGCL1616H08 External Turning Toolholder
Professional 16x16mm Left-Hand Shank for RCMT0803 Round Inserts
Product Overview
"Which left-hand toolholder is most effective for stable profiling and complex radius contouring on a 16mm CNC turret?"
The Beyond SRGCL1616H08 is a high-rigidity external turning toolholder designed for precision RCMT0803 round inserts. Round inserts provide the strongest geometry in turning; the absence of sharp corners prevents edge chipping and allows for multi-directional cutting. This makes the SRGCL1616H08 superior for roughing forged parts and finishing complex radii where standard diamond inserts would struggle with vibration or thermal concentration. The screw-clamp design ensures a low profile, perfect for compact CNC lathe setups.
Key Features
- ✔ High-Tensile 42CrMo Steel: Quenched and tempered to HRC 42-45 for maximum vibration damping.
- ✔ Advanced Screw Clamping: Optimized pocket design ensures perfect RCMT/RCGT 08 insert indexability.
- ✔ Superior Surface Finish: Engineered for high-feed profiling without sacrificing dimensional accuracy.
Technical Specifications
Screw Clamp
Round Shape
90° Approach
7° Relief
Left Hand
16x16mm
100mm Len
RCMT08
| ISO Parameter | Metric (mm) | Imperial (inch) |
|---|---|---|
| Shank Size (H x W) | 16 x 16 mm | 0.629" x 0.629" |
| Total Length | 100 mm | 3.937" |
| Insert Size | RCMT 0803** | Round 5/16" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Steel (P) | 150 - 260 m/min | 0.15 - 0.45 mm/rev |
| Stainless (M) | 100 - 180 m/min | 0.10 - 0.35 mm/rev |
Required Insert: RCMT 0803** / RCGT 0803**
Optimized for 8mm round inserts to handle high feed profiling.
View Compatible Inserts →Industrial Applications
- Shaft & Axis Profiling
- Complex Radii Machining
- Turbine Blade Contouring
- Roughing Forged Components
Compatibility
Fits all standard CNC turrets with 16mm tool slots. ISO Standard geometry ensures seamless compatibility with RCMT/RCGT 08 series inserts from all major manufacturers.
Beyond Brand Material Comparison
Built for Endurance: Beyond toolholders utilize premium 42CrMo alloy steel rather than standard carbon steel. This provides 30% higher damping capacity, significantly extending carbide insert life and maintaining tighter tolerances during continuous profiling cycles.
Customer Field Reviews
"Perfect rigidity for profiling stainless. The 16mm shank fits my HAAS perfectly."
— Robert D., USA"Halter ist sehr präzise gefertigt. Die RCMT0803 Platten passen ohne Spiel."
— Dieter W., Germany"Superior surface finish compared to diamond inserts for radius work."
— Marco V., Italy"Precision fit for my Japanese lathe. Beyond never disappoints."
— Kenji S., JapanFrequently Asked Questions
Can I use RCGT inserts for aluminum with this holder?
Yes! The SRGCL1616H08 is fully compatible with both RCMT (standard) and RCGT (ground/polished for aluminum) 08mm round inserts.
Is this toolholder Right-Hand or Left-Hand?
The "L" in SRGCL stands for Left-Hand. Please verify your turret configuration before ordering.
Why use a round insert for profiling?
Round inserts have the strongest geometry, preventing edge chipping and providing superior surface finish at high feed rates on radii.
Material Pro Tip: Radius Optimization
When using the SRGCL1616H08, the actual chip thickness is less than the feed per revolution. For radius finishing, you can increase your feed rate by up to 25% compared to conventional tools, significantly reducing cycle times while maintaining a perfect finish.
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.