BEYOND SRACL2525M08 CNC External Turning Tool Holder - 25x25mm Left Hand
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BEYOND SRACL2525M08 External Turning Tool Holder
Industrial-Grade Precision for RCMT 0803 Round Inserts
Product Overview
"Which left-hand tool holder is best for high-stability profiling and finishing with round inserts on a CNC lathe?"
The BEYOND SRACL2525M08 is a professional left-hand external turning tool holder designed specifically for RCMT 0803 (Round) carbide inserts. By utilizing a round geometry, this tool distributes cutting forces more effectively than triangular or rhombic shapes, making it the premier choice for complex profiling, radius turning, and heavy-duty finishing. The 25x25mm shank ensures maximum rigidity, while the high-tensile alloy steel body resists thermal deformation in high-speed applications.
Key Features
Enhanced Edge Strength
The R-style (Round) insert seating provides the strongest possible cutting edge, ideal for interrupted cuts and machining materials with hard surface scales.
Industrial Hardened Steel
Manufactured from 40Cr alloy steel, vacuum-quenched to HRC 42-45 for superior durability and vibration dampening.
Precision S-Type Clamping
Features a simplified screw-down system that ensures maximum insert stability and repeatable accuracy during high-volume production.
Technical Specifications
| Specifications | Metric Unit (ISO) | Imperial Unit (ANSI) |
|---|---|---|
| Shank Width/Height | 25 x 25 mm | 0.98" x 0.98" |
| Overall Length | 150 mm | 5.91" |
| Compatible Insert | RCMT 0803MO | RCMT 2.5 |
| Direction | Left Hand | Left Hand |
Recommended Cutting Parameters for BEYOND RCMT08:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Steel (P) | 160 - 280 m/min | 0.15 - 0.50 mm/rev |
| Stainless Steel (M) | 120 - 200 m/min | 0.12 - 0.40 mm/rev |
Applications
- Excellent for complex contour profiling.
- Ideal for heavy roughing of high-strength alloys.
- Effective for machining large radius fillets and circular grooves.
- Optimized for Steel (P), Stainless (M), and Heat-Resistant Alloys (S).
Compatibility
Designed for left-hand orientation in CNC turrets or manual lathes with 25mm tool posts. Fully compatible with all ISO standard RCMT 0803 series round inserts from BEYOND, Sandvik, and Kennametal.
Why Machinists Choose BEYOND
"Profiling Masterpiece"
Mark T., USA
Switched to this left-hand holder for a specific turbine part. The stability with RCMT inserts is leagues better than my old triangular tools.
"Top Rigidity"
Dieter S., Germany
The build quality of BEYOND is impressive. Hardened steel body holds up well against heat on stainless jobs.
"Reliable Tooling"
Hiroshi K., Japan
Excellent precision. The left-hand 25mm shank fits my CNC turret perfectly. Great value for the price.
"Perfect for Radius Work"
Matteo B., Italy
Used this for heavy profiling. The insert clamping is very secure even at high feed rates.
FAQ: Expert Answers
Q: Why should I use a round insert (RCMT) over a rhombic one?
A: Round inserts provide a much stronger cutting edge and allow for variable approach angles, making them significantly better for profiling and heavy metal removal without chipping.
Q: Is this holder suitable for internal boring?
A: No, the SRACL2525M08 is an external turning tool holder. Please see our S-series boring bars for internal applications.
Q: What comes in the box?
A: The package includes the SRACL2525M08 tool holder, one high-tensile clamp screw, and the corresponding Torx wrench.
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.