BEYOND SRACR1616H08 CNC External Turning Tool Holder - 16x16mm Right Hand
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BEYOND SRACR1616H08 External Turning Tool Holder
Industrial-Grade Precision for RCMT 0803 Round Inserts
Product Overview
"Which CNC tool holder is best for high-stability profiling and radius turning using RCMT round inserts?"
The BEYOND SRACR1616H08 is a professional-grade right-hand external turning tool holder specifically designed for RCMT 0803 round inserts. Round inserts are the premier choice for profiling because they offer the strongest cutting edge and allow for multi-directional cutting. The 16x16mm shank is crafted from high-tensile alloy steel, providing the rigidity needed to eliminate chatter and ensure a superior surface finish in both roughing and finishing operations.
Key Features
Enhanced Edge Rigidity
Round insert geometry (R-Style) maximizes tool life by distributing cutting forces evenly, preventing the edge chipping common in rhombic inserts.
Hardened Alloy Steel Body
Constructed from 40Cr steel, vacuum-quenched to HRC 42-45 for extreme durability and resistance to thermal deformation.
Precision S-Type Clamping
Features a secure screw-down system that locks the RCMT08 insert firmly, ensuring repeatable accuracy during high-volume production.
Technical Specifications
| Parameter | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Shank Width/Height | 16 x 16 mm | 0.63" x 0.63" |
| Total Length | 100 mm | 3.94" |
| Compatible Insert | RCMT 0803MO | RCMT 2.5 |
| Hand Direction | Right Hand | Right Hand |
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Steel (P) | 140 - 260 m/min | 0.15 - 0.45 mm/rev |
| Stainless Steel (M) | 110 - 180 m/min | 0.12 - 0.35 mm/rev |
Applications
- Heavy profiling of rounded shafts and turbine blades.
- Machining of large radius grooves and fillets.
- Roughing to finishing of Carbon Steel, Alloy Steel, and Stainless.
- Ideal for interrupted cuts and high-vibration environments.
Compatibility
Designed for 16mm CNC turret stations and manual lathe tool posts. Fully compatible with ISO-standard RCMT 0803 series round inserts from BEYOND, Sandvik, and Kyocera.
Verified Global Feedback
"Profiling Master"
Mark T., USA
Using this for radius profiling on carbon steel shafts. The 16mm shank is incredibly rigid for its size.
"Top Tier Stability"
Hans L., Germany
BEYOND holders never disappoint. The insert seat is perfectly ground, zero vibration at high speeds.
"Reliable Tooling"
Kenji Y., Japan
Excellent precision. The RCMT08 inserts fit perfectly without any movement. Fast shipping to Tokyo.
Expert Tooling FAQ
Q: Why choose a round insert (RCMT) over a rhombic one?
A: Round inserts provide the strongest cutting edge and allow for variable approach angles, making them significantly better for profiling and heavy roughing where edge chipping is a risk.
Q: Is this holder suitable for stainless steel?
A: Yes. When paired with a PVD-coated RCMT insert (like BEYOND BY8020 grade), it offers excellent heat resistance and chip control in stainless steel applications.
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.