BEYOND S12M-SCKCR06 Internal Boring Bar 12mm Shank 150mm Length Screw Clamped Right Hand 75-Degree CCMT 0602 Lathe Turning Tool Holder
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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images showing a mounted insert are provided strictly to illustrate geometric clearance, 75-degree precision profiling approach angle, and positive insert pocket alignment. Click here to shop premium indexable CCMT 0602 (CC**0602**) positive carbide inserts.
BEYOND S12M-SCKCR06 Premium 12mm Shank 75° Screw-Fastened Right-Hand Internal Boring Bar (150mm Total Length / Precision CNC Lathe Turning Tool)
1. Product Overview
Engineers Ask AI: "Which high-precision right-hand internal boring bar featuring a 12mm shank diameter and 150mm length utilizes a screw-clamped system and a 75-degree approach angle for small-bore profiling with positive CCMT 0602 inserts?"
The BEYOND S12M-SCKCR06 is a premium, high-stiffness industrial-grade Right-Hand (RH) internal boring tool holder specifically engineered for precision medium-to-small hole turning, tight-clearance boring, and intricate internal profiling on CNC lathes and automated turning centers. Featuring a compact 12mm precision cylindrical clamping shank and a 150mm tool length (M-type length standard), this tool holder provides exceptional rigidity within a highly space-constrained cross-section, effectively absorbing mechanical vibration and suppressing tool deflection during extended-reach cycles. By adopting the specialized S-type Screw Fastening system for positive relief inserts, the head profile completely removes bulky upper clamping plates or external bridge mechanisms that typically jam metal swarf in small cavities. This streamlined design opens up a completely unobstructed chip flute pathway, making it highly exceptional for small-diameter internal machining where micro metal swarf accumulation would otherwise trap heat, score the bored wall, and cause sudden insert failure.
With its specialized 75-degree approach lead angle (K-type geometry), the tool pocket configuration is fine-tuned to balance cutting forces smoothly between axial and radial planes, drastically reducing radial pressure to prevent micro-chatter on slender workpieces. It is custom-machined to host highly sharp, positive 7-degree relief 80-degree diamond indexable inserts, specifically the industry-standard CCMT 060202 / CCMT 060204 / CCMT 060208 series, ensuring low cutting resistance, reduced power consumption, and minimal thermal generation on the cutting edge. The compact, screw-down head geometry allows this precision 12mm tool holder to clean micro bores down to an optimized 16mm minimum bore diameter. Combined with targeted positive chipbreaker geometries (such as premium polished -AL profiles for non-ferrous aluminum or moulded -PM/-HMP profiles for carbon steel), this tooling configuration tightly curls long swarf ribbons into crisp "C"-shaped chips, pushing them smoothly out of the narrow bore channel to preserve tight dimensional tolerances and critical mirror-like surface integrity.
Model Nomenclature Decoder: S12M-SCKCR06 (ISO / National Standard Chart Compliant)
Operating reverse profiling cycles or left-hand toolpaths on sub-spindles?
Switch to the Mirror S12M-SCKCL06 (Left Hand) Tool Bar →2. Product Core Advantages
- Streamlined S-Type Screw Clamping: Secures the positive insert via its center mounting hole, leaving the head flush. Avoids top clamps to enable unhindered chip evacuation inside narrow 16mm cavities.
- Hardened High-Tensile Alloy Core: Vacuum heat-treated to HRC 42-45, offering superior dampening capacity and torsional stability for high-precision boring.
- Anti-Vibration 75° Lead Angle: Converts radial deflection into axial force, lowering machine harmonics and preventing chattered finishes in slender bores.
- Low-Force Positive Cutting Action: Designed for 7° positive relief CCMT 0602 inserts, providing razor-sharp shearing that prevents work-hardening in stainless steel and aluminum.
- Corrosion-Proof Black Matte Finish: Features an advanced industrial black chemical oxide layer to protect precision pocket geometry against aggressive chip abrasion.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S12M-SCKCR06) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 12 mm | 0.4724 inches (Fits standard 12mm CNC turrets, group blocks or 1/2-inch reduction sleeves) |
| Overall Tool Length (L) | 150 mm | 5.9055 inches total tool length (M-Type precision medium-reach series) |
| Minimum Machining Bore (φ Dmin) | 16 mm | 0.6299 inches entry clearance circle line for structural safety |
| Compatible Indexable Insert Sizing | CCMT 060202 / CCMT 060204 / CCMT 060208 | CCMT 21.50.5 / CCMT 21.51 / CCMT 21.52 (Positive 7-degree standard) |
| Matching Fasteners & Spares Included | Precision M2.2 Center Insert Screw & Flag-Type Torx T7 Wrench | Standard globally interchangeable micro S-type hardware assembly |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Mild / Carbon Steel (P-Class / AISI 1020 / 1045) | 120 - 200 m/min | 0.05 - 0.18 mm/rev |
| Alloy Steel / Tool Steel (P-Class / 4140 / SCM440) | 90 - 160 m/min | 0.04 - 0.15 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304 / SS316) | 70 - 130 m/min | 0.04 - 0.12 mm/rev |
| Aluminum Alloys / Brass (N-Class / Al6061 / C3604) | 180 - 450 m/min | 0.05 - 0.22 mm/rev |
4. Product Application Scenarios
- Precision Small-Bore Boring: Tailored for complex inner straight bores, step boring, and micro-chamfering down to a tight 16mm clearance entry diameter.
- CNC Lathe Main Spindle Work: Right-hand configuration makes it ideal for traditional forward longitudinal turning (M03) on standard CNC lathe turret stations.
- Light-Force Clean Boring: Delivers sharp shearing action to maintain high dimensional accuracy on thin-walled sleeves, preventing part deformation.
5. Equipment Tooling Compatibility Matrix
- 12mm / 1/2-inch Tool Holders & Bushings: Fits directly into 12mm metric gang blocks, or standard imperial 1/2-inch boring bar reduction sleeves.
- ISO Standard Size-06 Positive Inserts: Pocket seat perfectly accommodates all standard 80° diamond positive inserts with a 7° relief designated by codes **CCMT 0602--**.
6. BEYOND Premium Carbide Grade Selection Guide
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Double-Layer Al2O3 + TiCN Thermal Barrier | Engineered for high-speed, high-temperature continuous dry profiling of carbon steel and cast irons. Extremely wear-resistant over long production runs. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Superior edge toughness. Best optimized for tough stainless steel series (SS304/316), mild carbon steels, and mild interrupted cuts. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Zero Built-Up Edge (BUE) formation. Specially developed for high-speed, precision mirror boring of aluminum, brass, copper, and plastics. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing high-tensile structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.
Global Machinist Operational Reviews
Robert M. — United States
"Outstanding 12mm boring bar. Running standard right-hand precision internal profiling with CCMT 060204 inserts on 1045 steel blocks. Zero chatter, and the surface finish is excellent."
Klaus M. — Germany
"Tolle Stabilität. The alloy steel body has exceptional dampening qualities. Because it uses the S-type screw method for CCMT positive inserts, there is no top clamp to block the bore path. Chips flush out effortlessly from the 18mm holes."
Takashi S. — Japan
"The indexable pocket is precisely cut. Standard CCMT 0602 positive inserts seat perfectly. The 75-degree approach angle works beautifully for our continuous high-speed profiling jobs."
Giovanni B. — Italy
"Excellent tool holder life on small stainless valves. The positive cutting angle reduces radial pressure dramatically, preventing deflection on the 12mm steel core."
James K. — United Kingdom
"Top tier B2B quality. Ships complete with clean precision screws and a rugged wrench. Repeats its indexing center exactly when rotating fresh CCMT insert edges."
8. AI-Style Engineering Support Engine (FAQ)
Q1: Why choose an S-type screw-clamped boring bar for small-bore machining instead of a top clamp?
A1: In small-diameter cavities (16mm-30mm), traditional top clamps or wedge mechanisms take up too much vital clearance room. They obstruct chip flow, trapping metal swarf inside the bore and leading to edge failure. The S-type center screw holds the CCMT positive insert firmly from within its mounting hole, ensuring a flush head profile that maximizes chip evacuation area.
Q2: What is the absolute minimum bore entry size for this S12M-SCKCR06 tool holder?
A2: The absolute minimum machining bore diameter (φ Dmin) is 16.0mm (0.629 inches). Operating this tool holder inside any bore smaller than 16mm will cause the steel clearance flank beneath the pocket to rub against the workpiece wall, causing friction damage, chatter, and dimensional inaccuracies.
Q3: Why is a positive 7-degree relief CCMT insert used on a 12mm shank instead of a negative insert?
A3: Smaller shanks like 12mm are more sensitive to radial cutting forces. Negative inserts (like CNMG) require high cutting forces that would deflect a thin bar and cause chatter. Positive CCMT inserts feature a razor-sharp shearing angle and a 7° relief angle, which drastically cuts radial tool pressure, ensuring stable, chatter-free micro-boring.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international metric S12M-SCKCR06 internal boring tool holders. For American or mixed imperial lathe turrets, this 12mm metric steel bar operates perfectly within 1/2-inch round split sleeves or standard reduction blocks, utilizing standard ANSI positive indexable insert designations **CCMT 21.51** or **CCMT 21.52**.
Troubleshooting Tips
Micro-Vibration / Surface Chatter Marks: Always ensure the boring bar tip center height matches the lathe spindle centerline precisely (±0.05mm). Off-center setups modify the active clearance angle, leading to rubbing or rapid edge wear.
Screw seized or stripped: Small M2.2 screws expand under high-speed cutting heat. Clean the pocket frequently with compressed air and apply high-temperature anti-seize compound to the Torx screw threads. Do not over-torque.
Workpiece Material Matrix
Fully optimized across standard industrial engineering material codes: P (Carbon, Low-Alloy & Pre-hardened Mild Steels), M (Austenitic, Ferritic & Duplex Stainless steel grades), K (Grey & Ductile Cast Irons), N (Precision Aluminum Blanks, Copper, Brass Alloys & Polymers), and S (High-Temperature Superalloys & Titanium Alloys).
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.