BEYOND S12M-SDQCR07 Internal Boring Bar 12mm Shank CNC Lathe Turning Tool Holder Right Hand
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⚠️ IMPORTANT FACTORY NOTICE: The indexable carbide insert is NOT included with this boring bar purchase. Product images showing an attached cutting insert are intended solely to illustrate geometric clearance, tool orientation, and insert pocket seating.
BEYOND S12M-SDQCR07 Heavy-Duty Right-Hand Internal Boring Bar & CNC Turning Tool Holder
1. Product Overview
Engineers Ask AI: "Which high-rigidity 12mm right-hand boring bar uses DCMT0702 positive inserts to ensure smooth chipbreaker functionality, stable chip evacuation, and flawless surface finishes during deep internal profiling of alloy steels?"
The BEYOND S12M-SDQCR07 is a premium industrial-grade, screw-locking right-hand (R) internal boring bar meticulously engineered for high-precision CNC lathe internal turning, profile copying, and small-bore machining. Forged from high-tensile, vacuum-hardened alloy steel, this tool holder delivers exceptional cross-sectional density and structural stiffness within a highly compact 12mm shank matrix. Specially optimized for tight internal bores with a minimum clearance diameter of 15mm, it features a precision-machined insert pocket tailored to perfectly seat DCMT 0702-- indexable carbide inserts (such as DCMT 070204 or DCMT 070202).
By pairing this tool holder with positive rake indexable inserts engineered with targeted chipbreaker channels, the assembly effectively absorbs radial cutting forces to halt catastrophic tool vibration and micro-chatter. The precise geometry of the insert pocket maintains the exact tool presentation angle, allowing the insert’s chipbreaker to curl and snap continuous metal swarf into tight, manageable segments. This prevents dangerous chip nesting within narrow cavities, ensuring scratch-free internal surfaces and securing high dimensional repeatability across dense manufacturing runs.
2. Key Features & Industrial Advantages
- Induction-Hardened Alloy Core: Treated to HRC 42-45 to provide maximum structural resistance against deflection and minimize high-frequency tool harmonics.
- Compact 12mm Shank (M-Length): The 150mm overall length provides an excellent stability-to-reach ratio, ideal for processing deep, narrow inner profiles where clearance is critical.
- 107.5-Degree Lead Clearance Angle: Tailored specifically for intricate profile tracking, multi-directional profiling, and clearing strict internal 90° blind shoulders with a right-hand cutting feed.
- Premium Matte Hard-Black Layer: Protects against high-temperature chip adhesion, limits chemical coolant erosion, and locks in critical pocket tolerances.
Model Nomenclature Decoder: S12M-SDQCR07
Steel Shank Body
12mm Shank Dia.
150mm Total Length
Screw Clamping System
55 Degree Diamond Shape
107.5 Degree Lead Angle
7 Degree Relief Angle
Right Hand Orientation
7mm Insert Edge Size
Looking for the Mirrored Left-Hand (L) Version for Sub-Spindle or Back-Turning Cycles?
Explore the S12M-SDQCL07 (Left Hand) Tool Holder →3. Technical Specifications & Metric-to-Imperial Reference
| Technical Parameter | Metric Value (S12M-SDQCR07) | Imperial / Inch Equivalent Code |
|---|---|---|
| Shank Diameter | 12 mm | ~ 0.4724 inches (Fits standard 1/2" tooling sleeves with minor adaptation) |
| Overall Length | 150 mm | ~ 5.9055 inches |
| Minimum Bore Clearance | 15 mm | ~ 0.5905 inches |
| Matching Insert Standard | DCMT 070202 / DCMT 070204 / DCMT 070208 | DCMT 21.50.5 / DCMT 21.51 / DCMT 21.52 |
| Mounting Torx Hardware | Precision M2.5 Screw + T8 Torx Key | High-Tensile M2.5 Hardware + T8 Driver |
Optimal Industrial Cutting Speed & Feed Rate Benchmark
| ISO Workpiece Material Classification | Recommended Cutting Speed (Vc) | Feed Rate Target Range (f) |
|---|---|---|
| Carbon / Alloy Steels (P-Class) | 120 - 210 m/min | 0.03 - 0.14 mm/rev |
| Stainless Steel Varieties (M-Class) | 70 - 150 m/min | 0.03 - 0.10 mm/rev |
| Cast Iron & Nodular Matrix (K-Class) | 90 - 180 m/min | 0.04 - 0.16 mm/rev |
4. Product Application Scenarios
- Micro-Diameter Internal Boring: Specifically engineered for machining miniature inner cavities down to 15mm, providing tight spatial compliance.
- Intricate Profile & Contour Copying: The 107.5° clearance profile allows multi-directional tracking and smooth continuous forward-turning profiling operations.
- Blind Bore Corner Relief: Perfect for cleaning up right-angle internal faces and machining precise snap-ring grooves or shoulders.
5. Equipment & Tooling Compatibility
- CNC Turrets & Automatic Lathes: Mounts firmly into standard 12mm tool slots, compact gang blocks, or universal adapter sleeves.
- Swiss-Type Lathes & Multi-Axis Turning Centers: Excellent design profile for high-density, small-footprint machining configurations.
- Universal 7mm Indexable Inserts: Securely couples with all major premium 55° positive rhombic DCMT 0702-- carbide inserts.
6. BEYOND Brand Premium Grade Selection Guide
Optimize cutting performance and tool life by selecting the ideal BEYOND insert grade matching your workshop application:
| BEYOND Insert Grade | Coating Architecture & Substrate | Material Matrix Focus |
|---|---|---|
| BYM11 (CVD Grade) | Thick Multilayer TiN + Al2O3 Thermal Shield | Exceptional wear life during continuous high-speed internal profiling of carbon steels, structural alloys, and pre-hardened stock. |
| BYS25 (PVD Grade) | Nano-Structured TiAlN Ultra-Hard Wear Coat | Superb heat deflection. Ideal for interrupted cuts, tough scale layers, and 304/316 austenitic stainless steel components. |
| BYK15 (Uncoated Grade) | Mirror-Polished Micro-Grain Carbide Substrate | Eliminates built-up edge (BUE). Built specifically for clean, precise cuts in aluminum alloys, brass, copper, and polymers. |
7. Why Choose BEYOND CNC Tools?
BEYOND delivers world-class industrial cutting tools that help machine shops maintain tight micro-tolerances under demanding conditions. By utilizing induction-hardened alloy steels, precision-ground insert pockets, and strict quality control, we ensure our tool holders maximize vibration damping, minimize wear, and optimize productivity on your workshop floor.
Global Machinist Feedback
Marcus G. — United States
"Excellent compact 12mm bar for small-bore work on our Haas. Pocket holds the DCMT 0702 tightly, giving zero chatter on fine profiling cuts."
Hans W. — Germany
"Sehr gut verarbeitet. The 107.5-degree orientation gives massive clearance inside deep blind holes. Perfect profile tracking."
Kenji S. — Japan
"Flawless surface finish on our primary spindle line. The hard-black protective layer holds up remarkably well against hot chip friction."
Luca B. — Italy
"Very rigid tool body for a 12mm bar. Chip evacuation is smooth when paired with high pressure oil coolant."
Alex D. — United Kingdom
"Holds micro tolerances perfectly over extended runs. High B2B value for small precision engineering shops."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What distinct machining advantage does the 'M' length code signify?
A1: The 'M' catalog designation indicates a total overall tool body length of 150mm. In a compact 12mm shank configuration, this length limits micro-flexing while offering excellent deep-cavity entry capability for automated parts manufacturing.
Q2: Can I mount larger DCMT 11T3 inserts inside this S12M-SDQCR07 tool holder?
A2: No. The pocket is ground exclusively for DCMT 0702-- inserts (7mm edge length). Forcing an 11mm insert into this pocket will mismatch the clamping screw alignment, leading to terminal pocket destruction.
Q3: What is the optimal overhang ratio for this steel shank to control harmonics?
A3: For high-tensile solid steel bars, the golden operational standard for maximum overhang is 3x to 4x the shank diameter (approx. 36mm to 48mm extension from the clamping block). If you must extend past this ratio, reduce feed rates by 20-30% to stabilize harmonics.
9. Technical Maintenance & Diagnostic Guidelines
Equivalent Industry Models
Fully cross-compatible with standard catalog industry designation codes matching universal ISO/ANSI metric specifications for S12M-SDQCR07. Directly drops into any global 12mm Right-Hand internal tooling block bound to 55° positive configurations.
Troubleshooting Tips
Micro-Chatter Control: Ensure the pocket is cleared of microscopic swarf or fine carbon residue before indexing the insert. If high-frequency harmonics persist, step down the insert corner nose radius (e.g., from 0.4mm to 0.2mm) to dramatically lower radial cutting forces.
Screw Torque Maintenance: Tighten the center M2.5 locking screw using a T8 driver flag to a recommended torque rating of 0.9 - 1.2 Nm.
Workpiece Material Matrix
Engineered to operate reliably across primary standard industrial metal categories: P (Carbon & Alloy Steels), M (Stainless Steel grades), K (Grey & Ductile Cast Irons), N (Aluminum & Non-ferrous materials), and S (Heat-resistant superalloys).
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.