SRGCR2525M16 External Turning Tool Holder for RCMT Inserts – BEYOND
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SRDCN2525M16 External Turning Toolholder
Precision 25x25mm Square Shank for Round RCMT1606 Inserts
Product Overview
"Which toolholder is most stable for heavy-duty profiling and radius turning with round inserts?"
The Beyond SRDCN2525M16 is a high-performance external turning toolholder specifically engineered for RCMT1606 (round) inserts. Unlike traditional diamond-shaped holders, the centered round insert geometry of the SRDCN series provides the strongest cutting edge possible. This design excels in heavy-duty roughing and complex profiling where multidirectional cutting forces are present, ensuring exceptional tool life and surface finish in steel, stainless steel, and high-temp alloys.
Key Features
- ✔ Symmetrical Neutral Design: The centered insert allows for versatile profiling and multi-directional turning.
- ✔ High Impact Resistance: Optimized for heavy-duty roughing where vibration damping is critical.
- ✔ Lever-Lock/Screw Security: Ensures the RCMT round insert remains stationary under extreme radial loads.
Technical Specifications
Screw Clamp
Round Shape
Neutral (0°)
7° Relief
Straight
25x25mm
150mm Len
RCMT16
| Technical Data | Metric (mm) | Imperial (inch) |
|---|---|---|
| Shank Size (H x W) | 25 x 25 mm | 0.984" x 0.984" |
| Total Length (L) | 150 mm | 5.905" |
| Insert Style | RCMT 1606** | Round 5/8" |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Steel (P) | 140 - 230 m/min | 0.20 - 0.55 mm/rev |
| Stainless (M) | 110 - 170 m/min | 0.15 - 0.40 mm/rev |
Required Insert: RCMT 1606** / RCGT 1606**
Optimized for round carbide inserts to handle heavy profiling.
View RCMT1606 Inserts →Primary Applications
- Roughing of Forged Components
- Large Radius Profiling
- Turbine Blade & Aero-engine Parts
- Heavy-duty Roll Turning
Equipment Compatibility
Designed for any CNC Lathe Turret with a 25mm tool block. Standardized ISO geometry allows seamless replacement of Sandvik, Iscar, or Kennametal toolholders using RCMT 16 series inserts.
Beyond Grade Comparison
Steel Alloy Body: Our toolholders are forged from ultra-high-tensile steel, providing 20% more vibration absorption than standard 40Cr toolholders. This translates to better surface finishes and extended insert life.
Why Machinists Choose Beyond
"The SRDCN centered design is perfect for the profiling work we do on aero-parts. Rigidity is top-notch."
— David W., USA"Excellent holder for RCMT inserts. Switched from a premium brand and the performance is identical at half the price."
— Klaus B., Germany"Molto robusto. The finish on stainless steel with RCMT16 is fantastic."
— Paolo R., Italy"Highly precise. 25mm shank fits perfectly in our Mazak turrets."
— Kenji M., JapanFrequently Asked Questions
Can I use RCGT inserts for aluminum with this holder?
Yes! The SRDCN2525M16 is compatible with both RCMT (standard) and RCGT (ground/polished for aluminum) 16mm round inserts.
Is this toolholder Right-Hand or Left-Hand?
The SRDCN series is a Neutral (Centered) toolholder, allowing it to be used for profiling in both directions depending on your CNC program.
What is the benefit of a round insert over a diamond shape?
Round inserts have the strongest cutting edge and superior heat dissipation, making them the best choice for roughing forged surfaces or materials with variable hardness.
Material Pro Tip: Feed Rates with Round Inserts
Unlike diamond inserts, the chip thickness with a round insert (RCMT) changes based on the depth of cut. When using the SRDCN2525M16 for shallow profiling, you can significantly increase your feed rate (mm/rev) to maintain optimal chip load and prevent work hardening of the workpiece material.
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.