Beyond SRAPR2525M08 CNC Turning Tool Holder (25x25mm Right-Hand Shank)
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Beyond SRAPR2525M08 Right-Hand Heavy-Duty CNC Turning Tool Holder
⚠️ PRODUCTION NOTICE: Carbide Inserts Not Included
Please note that all indexable carbide inserts displayed in our tool holder product images are for operational demonstration, pocket seating clarity, and application layout visualization only. The Beyond SRAPR2525M08 package includes solely the hardened right-hand heavy-duty tool holder body and a matching assembly wrench; indexable cutting inserts must be ordered separately.
1. Product Overview
The Beyond SRAPR2525M08 is an industrial-grade, right-hand external indexable turning tool holder specifically engineered for high-rigidity CNC lathe turrets, heavy-duty turning centers, and conventional engine lathes. Built with a robust 25x25mm square shank body, this premium tool holder is purpose-designed to eliminate harmonics and provide exceptional structural rigidity when working with 8mm round carbide inserts—specifically the internationally standardized RPMT 08T2 and RPMR 08T2 series. Circular cutting geometries possess an inherently high edge strength because they lack a single weak point location like traditional diamond or triangle inserts. This allows mechanical stresses and thermal shocks to distribute evenly across the cutting radius arc, making it highly resistant to micro-chipping. The 11° positive rake clearance profile significantly reduces cutting forces and allows for smooth chip control when face-roughing, profiling structural steels, stainless steel components, and tough castings.
2. Product Key Features
- High-Rigidity Alloy Matrix: Quenched and tempered to exact industrial HRC specifications to absorb structural vibration and withstand deep cuts ($Ap$) during continuous roughing operations.
- Symmetrical Load Evacuation: The round profile geometry spreads cutting wear across a wider radius arc, extending insert tool life by up to 30% compared to rhombic alternatives.
- Chemical Matte Black Finish: Features an advanced industrial black oxide treatment that resists rust and minimizes thermal chip welding during high-temperature dry machining runs.
- Unobstructed Center-Screw Clamping: Engineered with a low-profile metric flathead screw mechanism that provides absolute clearance for continuous, high-velocity chip flow.
ISO Tool Designation Nomenclature Diagram
Looking for high-performance indexable cutting inserts calibrated for this right-hand shank?
Browse Compatible RPMT 08T2 Inserts Here →3. Technical Specifications & Dimension Conversions
| ISO Specification Parameter | Metric Designation (Standard) | Imperial Cross-Reference Equivalent |
|---|---|---|
| Shank Dimension (H x W) | 25 mm × 25 mm | approx. 1" × 1" (1.000 × 1.000 inch Shank Size) |
| Overall Tool Length (OAL) | 150 mm | approx. 5.905 inches |
| Compatible Insert Specification | RPMT 08T2 MO / RPMR 08T2 | RPM. 2.52 (ANSI Industry Equivalent Standard) |
| Clamping Screw Hardware | M2.5 × 6.5 mm Screw | M2.5 × 6.5 mm Screw |
| Torx Wrench Drive Interface | T8 Wrench | T8 Wrench |
Recommended Industrial Cutting Parameters
| Workpiece Material Family | Cutting Speed ($Vc$) Range | Optimal Feed Rate ($f$) Range |
|---|---|---|
| P (Low-Carbon / Carbon Steel Alloys) | 140 - 280 m/min (460 - 920 SFM) | 0.08 - 0.25 mm/rev (0.003 - 0.010 in/rev) |
| M (Austenitic & Duplex Stainless Steels) | 90 - 180 m/min (295 - 590 SFM) | 0.06 - 0.18 mm/rev (0.002 - 0.007 in/rev) |
| K (Nodular & Grey Cast Irons) | 110 - 220 m/min (360 - 720 SFM) | 0.10 - 0.28 mm/rev (0.004 - 0.011 in/rev) |
4. Product Application Scenarios
The heavy-duty 25mm (1") square shank block coupled with precise 8mm circular insert profiles excels across high-rigidity precision industrial turning steps:
- Right-Hand External Profiling: Runs smoothly along precise continuous contours for processing structural shafts, valve components, and heavy automotive joints.
- Heavy Profiling & Contouring: Provides maximum structural rigidity for rough profiling steps on structural alloys and hydraulic cylinder housings.
- Interrupted Machining: The robust round insert geometry distributes severe shocks evenly, avoiding tool failure when roughing forgings with uneven crust surfaces.
5. Machine Tool & Equipment Compatibility
Machined to tight dimensional tolerances to ensure fast drop-in integration into high-power machine setups:
- Secures directly into standard 25mm static tool holder blocks or standard indexing CNC lathe turrets.
- Fits smoothly on heavy-duty conventional manual lathes outfitted with medium-sized square tool posts.
- Fully compatible with standard Quick-Change Tool Post assemblies (such as standard QCTP 300 or 400 series, or CXA/CA tool holder blocks designed for 1-inch shanks).
6. Beyond Insert Grade Selection Matrix
Pair your SRAPR2525M08 holder with the appropriate Beyond carbide insert grade substrate to match your raw material stock:
| Beyond Insert Grade | Coating Architecture | Primary Application Profile | ISO Range Class |
|---|---|---|---|
| BY1030 | CVD Thick TiCN + Al2O3 Multi-Layer | Continuous high-speed turning to medium roughing in carbon steel and hard alloy plates. | P15 - P30 |
| BY2015 | Multi-Layered PVD AlTiN Nano-Coating | High thermal resilience for gummy stainless steels (304, 316) and high-temperature superalloys. | M10 - M25 |
| BY4025 | Heavy PVD Ultra-Tough TiAlN Coating | Heavy interruption, rough casting surfaces, and structural low-speed processing environments. | P30 - P45 / M25 - M40 |
7. Operational Troubleshooting Matrix
Problem A: Fine Surface Chatter or Low-Frequency Vibration
Correction: On 25mm heavy setups, ensure the holder overhang length is as minimal as possible. Make sure your depth of cut ($Ap$) completely engages the 8mm round profile to prevent tool rubbing.
Problem B: Premature Flank Wear or Crater Formations
Correction: Elevated linear velocity causes localized friction cooking. Reduce your surface speed ($Vc$) or migrate to a premium CVD multi-layer co-extrusion grade (BY1030).
Problem C: Insert Indexing Shifts or Pocket Movement
Correction: Check if micro-chips or compressed dust have settled underneath the pocket seat. Clean thoroughly with an air gun and replace the M2.5 clamping screw if it shows thread wear.
8. Global Customer Experiences
"Incredible rigidity for 1-inch posts" — Robert T. (United States)
Fits our 1" static block beautifully for right-hand profiling contours on large alloy shafts. Paired with standard RPMT08T2 inserts, it cuts cleanly with zero deflection under heavy load. Solid product from Beyond.
"Ausgezeichnete Stabilität bei schweren Schnitten" — Hans W. (Germany)
The 25mm shank design provides massive structural support. The insert pocket seat holds the 8mm round inserts perfectly secure during rough contouring steps. Highly recommended for heavy production lines.
"Gambo robusto da 25mm, ottima fattura" — Domenico F. (Italy)
Very nice anti-rust matte finish on the alloy tool body. Handles rough castings comfortably with the 8mm insert size. Note that cutting inserts are sold separately—holder-only box package.
"25mmのシャンクは非常に頑丈で、ビビリが一切ない" — Takashi M. (Japan)
Perfect drop-in fit for our heavy CNC turrets. The heat dissipation on the steel holder is excellent during long roughing runs. Beyond delivers premium industrial quality toolholders.
"Flawless results on continuous heavy profiling" — Peter J. (Australia)
We run this 25mm bar for specialized face profiling on carbon steel forgings. The heavy shank combined with the 8mm round insert clears the path smoothly with no structural chatter or edge chipping.
9. Frequently Asked Questions
Q: What is the exact imperial equivalent size for the SRAPR2525M08 tool holder shank?
A: The metric 25x25mm square shank dimensions correspond directly to a standard 1 inch × 1 inch mounting standard footprint inside traditional imperial tool posts and blocks.
Q: Is this tool holder compatible with both RPMT08T2 and RPMR08T2 insert styles?
A: Yes! The pocket seat accepts all standard 8mm round inserts featuring a 2.38mm thickness ($S1$), including both RPMT 08T2 and RPMR 08T2 industrial designations.
Q: What screws and wrench come inside the standard packaging?
A: It uses a high-tensile metric M2.5 × 6.5mm flathead Torx screw. One screw is pre-installed in the pocket seat, and a matching T8 flag-style driver wrench is included in the box.
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.