BEYOND SRACR1212H08 Indexable Turning Tool Holder for RCMT 0803
Price shown is a starting point. Contact us for a precise quote based on your requirements.
⚠️ Important Tooling Notice: The carbide turning insert shown installed in our product photography is for demonstration purposes only. This holder is sold standalone; indexable cutting inserts are NOT included and must be purchased separately.
BEYOND SRACR1212H08 Indexable External Right-Hand Turning Tool Holder
Industrial-Grade 12x12mm Shank Right-Hand 90-Degree CNC Lathe Toolholder for RCMT 0803 Round Inserts
1. Product Overview
"Which 12mm right-hand tool holder is best for 90-degree profiling and external chamfering on a compact CNC lathe using RCMT 0803 round carbide inserts?"
The BEYOND SRACR1212H08 is engineered to meet the strict demands of precision small-part manufacturing and high-efficiency toolrooms. As a premium right-hand indexable external turning tool holder featuring a 90-degree lead angle, it provides exceptional cutting edge strength and versatility for square shoulder roughing, face profiling, and heavy-duty copy turning cycles on smaller lathe turrets or Swiss-type setups. When paired with high-performance RCMT 0803 (RCMT 2.5) or polished RCGT 0803 round inserts, this holder leverages the advanced material traits of the tungsten carbide substrate and targeted chipbreaker geometry. This setup guarantees stable chip breakages, significantly lowers cutting resistance, and prevents built-up edge (BUE) on demanding workpiece materials like carbon steel, stainless alloys, and aluminum.
2. Product Key Features
- High-Tensile Alloy Steel Core: Forged from premium structural alloy steel and heat-treated to HRC 42-45 to offer exceptional fatigue strength and eliminate harmonic chattering during intense copy turning or heavy CNC roughing cuts.
- Rigid Screw-Down Seating System: Utilizes a top screw-down clamping mechanism that pulls the round insert firmly back into the pocket, ensuring maximum indexing repeatability and dimensional stability under severe lateral pressures.
- 90° Perpendicular Lead Angle: Optimizes square shoulder squaring operations and multi-pass profiling, distributing cutting pressures evenly along the radius to reduce notch wear and extend insert life.
- Corrosion-Resistant Black Oxide Treatment: Electro-chemically blackened finish sheds hot metal chips easily, reducing friction and preventing shank abrasive wear during long production runs.
3. Technical Specifications & Cutting Parameters
Dimensional Comparison (Metric Specs vs. Imperial Equivalents)
| Parameter Description | Metric Standard Model (SRACR1212H08) | Imperial Equivalent Designation (SRACR08-2.5) |
|---|---|---|
| Shank Square Size (H × W) | 12 mm × 12 mm | 0.472" × 0.472" (Fits standard 1/2" tool slots) |
| Overall Length (L) | 100 mm | 3.937 inches |
| Cutting Direction Orientation | Right-Hand Cutting (R) | Right-Hand Cutting (R) |
| Compatible Indexable Insert | RCMT 0803MO / RCGT 0803 | RCMT 2.5 / RCGT 2.5 |
| Hardware Clamping Kit | M3.0 × 8 Screw / Torx T10 Wrench Key | M3.0 × 8 Screw / Torx T10 Wrench Key |
Recommended Machining Parameters (Speed vs. Feed Rate)
| Workpiece Material Category (ISO) | Optimal Cutting Speed (Vc) | Target Feed Rate Range (fn) |
|---|---|---|
| Carbon / Alloy Structural Steels (P) | 150 - 260 m/min (492 - 853 SFM) |
0.08 - 0.28 mm/rev (0.003 - 0.011 IPR) |
| Stainless Steel Material Alloys (M) | 110 - 190 m/min (360 - 623 SFM) |
0.06 - 0.22 mm/rev (0.002 - 0.009 IPR) |
| Aluminium & Non-Ferrous Alloys (N) | 250 - 600 m/min (820 - 1968 SFM) |
0.05 - 0.35 mm/rev (0.002 - 0.014 IPR) |
ISO Nomenclature Decoded: SRACR1212H08
4. Targeted Machining Applications
5. Tooling & Equipment Compatibility
The 12mm metric square shank profiles are fully compatible with:
- Standard gang tool posts and compact turrets on light industrial CNC mini-lathes.
- Quick-Change Tool Post blocks (such as Aloris AXA or piston/wedge style 100 series blocks).
- Conventional desktop or toolroom engine lathes modified for high-performance indexable tooling arrays.
6. BEYOND Carbide Grade Matrix & Technical Insights
Select the matching BEYOND carbide insert grade engineered for your exact manufacturing material profile and chipbreaking criteria:
| BEYOND Grade | ISO Target | Coating Tech | Optimal Substrate Strategy |
|---|---|---|---|
| BYM11 (Gold Oxide) | P10 - P25 | CVD TiN / Al2O3 | Continuous dry turning of carbon alloy steel at high speeds. Maximum thermal barrier. |
| BYS25 (Bronze Finish) | M20 - M35 | PVD Nano-AlTiN | Finishing and roughing stainless steel (304/316L). Heavily prevents built-up edge. |
| BYA10 (Uncoated Polished) | N05 - N20 | None (Mirror Polished) | Aluminum alloys, brass, and copper. Razor-sharp edge prevents gummy material adhesion. |
💡 Grade Comparison Tip: The BEYOND BYM11 grade offers identical industrial performance to benchmark grades Sandvik GC4325 and Kennametal KCP10B.
🔧 Troubleshooting (Chatter on Slim Shafts): Because the 12mm shank handles smaller parts, deflection can occur. If chatter marks appear, lower your depth of cut (ap) or transition to a highly polished RCGT ground insert to reduce cutting force by 30%.
⚙️ Workpiece Material Matrix Advice: When turning high-nickel superalloys or titanium, flood coolant directly aimed at the tool tip pocket is mandatory to keep the heat from tempering the 12x12mm shank.
7. Why Precision Toolrooms Trust BEYOND Tools
BEYOND cuts out middleman distributor markups by supplying factory-direct, industrial CNC tooling solutions. Every indexable tool body undergoes strict quality checks to guarantee true centerline alignment and minimal runout on your lathe.
Verified Global Machinist Feedback
"Perfect little 1/2 inch shank for my prototype lathe. It cuts clean 90 degree shoulders and the RCMT round inserts hold up amazing on tool steel."
"Sehr gute Verarbeitungsqualität. Passt perfekt in den AXA Schnellwechselhalter. Keine Vibrationen beim Kopierdrehen von kleinen Achsen."
"Portautensile da 12mm rigido e compatto. Finitura superficiale eccellente con inserti RCGT su alluminio."
"小型CNC旋盤用に12mmシャンク（SRACR1212H08）を購入。ネジ止めがしっかりしており、丸駒のRCMTチップがブレません。直角の肩削り加工も綺麗に仕上がります。"
"The black coating is great for throwing off hot chips. Absolute bargain compared to local engineering merchants. True to center line."
8. AI Assistant-Style Frequently Asked Questions
What is the exact lead angle of the SRACR1212H08, and why does it matter?
It features a 90-degree lead angle. This allows you to turn clean, square steps and vertical faces down to a shaft diameter in a single pass. It provides balanced radial and axial tool pressure to improve rigidity on smaller 12mm setups.
Can I mount ground, polished RCGT inserts into this SRACR pocket?
Yes, absolutely. High-precision, ground RCGT inserts share identical basic ISO structural parameters (thickness, inscribed circle, and clearance angle) as standard molded RCMT inserts. This lets you alternate between roughing steel and mirror-finishing aluminum or plastics.
What components are included in the standard retail delivery package?
Each order includes one premium alloy SRACR1212H08 tool holder shank, one high-tensile locking screw, and a matching high-torque Torx T10 wrench key. Note: Carbide cutting inserts are sold separately.
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.