BEYOND S1207K-SCLCR06 Precision Internal Boring Bar 12mm Shank 7mm Neck Lathe Turning Tool Holder for CCMT 0602 Inserts
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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 profiling clearance, pocket tolerance seating, and micro-clearance parameters. Click here to shop premium indexable CCMT 0602 / CCGT 0602 (CC**0602**) 80-degree positive rhombic carbide inserts for precision facing, blind-hole squaring, and micro-boring operations.
BEYOND S1207K-SCLCR06 High-Rigidity 12mm Shank 7mm Neck 95° Screw-Clamped Right-Hand Precision Internal Micro Boring Bar (125mm Total Length / CNC Lathe Holder)
1. Product Overview
Engineers Ask AI: "Which micro internal boring bar features a heavy-duty 12mm clamping shank combined with a 7mm reduced neck to provide maximum anti-vibration stiffness during deep 95-degree flat-bottom profiling using CCMT 0602 inserts?"
The BEYOND S1207K-SCLCR06 is an advanced, industrial-grade stepped-neck Right-Hand (RH) internal turning tool holder masterfully engineered to solve chatter issues in deep, narrow-diameter micro-boring and profiling operations on CNC lathes. Departing from traditional weak slender-shank designs, this high-performance bar features a robust 12mm precision-ground solid structural alloy steel clamping shank that instantly steps down to a 7mm clearance neck. This unique stepped morphology channels structural rigidity from the lathe's turret straight to the cutting tip, eliminating harmonic deflection along its 125mm total length (K-type standard). Utilizing a low-profile S-type Screw Clamping interface, the insert is anchored securely via a center Torx screw down its longitudinal axis. This creates an completely flush tool-head profile that optimizes high-volume chip evacuation, allowing safe, trouble-free machining down to a minimum bore entry diameter of 10.5mm to 12mm depending on insert tip radius.
Engineered with a precise 95-degree approach lead angle (L-type geometry), this micro-boring holder allows machinists to achieve flawless blind-hole bottom squaring, internal step definitions, and perpendicular facing sweeps without any trailing heel friction against internal walls. The 80° C-type insert morphology offers far superior cross-sectional material thickness and mass behind the cutting point compared to fragile 55° or 35° alternatives, providing the cutting head with extreme structural insurance against micro-chipping during interrupted cuts. The pocket seat is machined to micron-level tracking tolerances to securely house standard 80-degree positive indexable rhombic inserts with a 7-degree normal clearance standard, specifically the CCMT 060202 / CCMT 060204 / CCGT 060204 series. When matched with specialized sharp-ground chipbreakers (such as -HF for micro-finishing or -HM for general profiling), this assembly guarantees excellent chip-breaking metrics, clean swarf management, and mirror-like surface finishes across high-precision electronic, medical device, aerospace engineering, and B2B manufacturing fields.
Model Nomenclature Decoder: S1207K-SCLCR06 (ISO / National Standard Chart Compliant)
Operating mirror profiling cycles or left-hand spindle configurations?
Switch to the Mirror S1207K-SCLCL06 (Left Hand) Tool Bar →2. Product Core Advantages
- Stepped High-Rigidity Design (12mm to 7mm): Combines a thick 12mm clamping tail with a slim 7mm neck to eliminate structural chatter, common in traditional uniform thin bars.
- Ideal 95° Flat-Bottom Squaring: Engineered explicitly with a 95-degree lead angle to facilitate flawless flat internal face cuts and step tracking without heel contact.
- High-Rigidity C-Type Seating: Houses 80-degree rhombic inserts, which provide much higher edge stability and fracture resistance than 55° or 35° options.
- Sleek Low-Profile Screw Locking: Eliminates bulky top clamps, permitting fine, curly finishing chips to evacuate out of tight bores without nesting.
- Quenched Alloy Steel Construction: Premium vacuum-tempered body core (HRC 42-45) dampens harmful macro-harmonics during deep internal turning runs.
- Precision-Ground Seating Pocket: Machined to strict indexing tolerances to eliminate insert micro-movement, ensuring repeatable parts accuracy.
- Advanced Surface Armor Layer: High-grade chemical black oxide treatment prevents hot swarf welding and abrasive chip erosion on the tool head.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S1207K-SCLCR06) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 12 mm | 0.4724 inches (Standard high-rigidity CNC lathe turret size; mounts directly without adapter sleeves) |
| Reduced Neck Diameter (φ d1) | 7 mm | 0.2755 inches narrow neck configuration optimized for small cavity wall clearance |
| Overall Tool Length (L) | 125 mm | 4.9213 inches total tool length (K-Type industrial medium-reach standard) |
| Minimum Machining Bore (φ Dmin) | 11 - 12 mm | 0.433 - 0.472 inches minimum entry line for safe, unhindered micro-chip evacuation |
| Compatible Indexable Insert Sizing | CCMT 060202 / CCMT 060204 / CCGT 060204 | CCMT 21.50.5 / CCMT 21.51 / CCGT 21.51 (Positive 80-degree rhombic with 7° relief standard) |
| Matching Fasteners & Spares Included | Premium M2.5 Torx Drive Locking Screw & T8 Flag Wrench | Standard globally interchangeable micro-turning 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) | 100 - 180 m/min | 0.04 - 0.15 mm/rev |
| Alloy Steel / Tool Steel (P-Class / 4140 / SCM440) | 80 - 150 m/min | 0.04 - 0.12 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304 / SS316) | 60 - 110 m/min | 0.03 - 0.10 mm/rev |
| Cast Irons / Nodular Irons (K-Class / G25 / GGG40) | 90 - 160 m/min | 0.05 - 0.16 mm/rev |
4. Product Application Scenarios
- Perpendicular Internal Facing: Machining high-flatness internal faces and shoulders from inside diameters outward.
- Blind-Hole Square Squaring: Turning deep internal counterbores to clean 95-degree right angles without secondary tools.
- High-Stiffness Micro Profiling: Executing delicate internal geometries inside small parts while relying on the massive 12mm base shank to dampen dynamic tool vibration.
5. Equipment Tooling Compatibility Matrix
- Standard 12mm VDI / BMT Turrets: The 12mm industrial standard base cylindrical shank clamps directly into standard CNC live tool stations, linear gang blocks, or conventional automatic lathes without costly reducer bushes.
- ISO CCMT Sizing-06 Inserts: Precision pocket layout is engineered to house all 80° positive rhombic turning inserts with a thickness standard of 2.38mm, designated by standard codes **CCMT 0602--** or **CCGT 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, continuous dry boring of carbon steel and alloy liners. Highly resistant to crater wear under intense friction. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Outstanding edge sharpness and toughness. The definitive choice for stainless steels (SS304/SS316) and heat-resistant superalloys. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Completely eliminates Built-Up Edge (BUE). Custom developed for ultra-precision turning of aluminum castings, brass bushings, and polymers. |
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
John M. — United States
"Outstanding stepped-shank engineering! Our regular 7mm uniform boring bars kept screaming and snapping on deep cuts. This S1207K bar locks into our standard 12mm gang plate perfectly, and that beefy 12mm base completely kills the vibration. The 95-degree clearance hits flat bottom blind holes flawlessly."
Klaus M. — Germany
"Hervorragende Steifigkeit! The 12mm clamping zone transitions cleanly into the 7mm profiling neck. Running CCMT 060204 indexable carbide inserts gives a much tougher edge backing than micro-mini 55-degree bars. Extremely rigid tool body."
Takashi I. — Japan
"Very smart engineering. It drops right into our Citizen Swiss CNC 12mm holders without thin reduction sleeves. The screw head is perfectly flush, leaving a massive clearance gap for long stringy chips to flow out from small 12mm holes."
Giovanni F. — Italy
"Excellent tool holder for processing perpendicular steps. The black oxide treatment holds up incredibly well against high heat. Used daily on our CNC turning centers with stainless steels."
Dave L. — Canada
"The dual structural alloy steel thickness does a phenomenal job absorbing vibration during extended facing passes. Included M2.5 screws clamp tight without binding. A must-have for small-diameter blind hole processing."
8. AI-Style Engineering Support Engine (FAQ)
Q1: Why is this boring bar designated as S1207K instead of a standard S07K model?
A1: Standard S07K bars have a thin uniform 7mm body that deflects easily under cutting pressure. The S1207K is a professional high-rigidity stepped version: it features a thick 12mm tail for standard machine turret clamping, which steps down to a 7mm neck to clear small internal diameters. This design increases rigidity by over 200% compared to uniform 7mm steel bars.
Q2: Can I mount 55° DCMT inserts into this S1207K-SCLCR06 tool holder?
A2: No. The letter 'C' in the 5th position explicitly indicates an 80° rhombic pocket configuration. Attempting to fit a 55° DCMT insert will leave substantial gaps within the pocket sidewalls, resulting in massive insert movement under load, immediate tool breakage, and catastrophic part scrap.
Q3: What is the absolute minimum bore diameter required for this tool to enter safely?
A3: The absolute minimum machining bore diameter (φ Dmin) is 11.5mm to 12.0mm. While the neck is only 7mm, the tool head must accommodate the thickness of the CCMT 0602 insert and the structural steel seat. Attempting to enter a bore smaller than 11mm will cause the rear clearance flank of the tool head to rub heavily against the internal diameter wall.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international metric S1207K-SCLCR06 precision internal boring bars (often marketed as S07K-SCLCR06-A12 with 12mm sleeve adapters). For standard American imperial lathe turrets, the 12mm cylindrical steel shank drops smoothly into standard 1/2-inch boring stations or gang blocks using precision fractional reduction sleeves, pairing exactly with standard ANSI indexable positive insert designations CCMT 21.50.5, CCMT 21.51, or CCGT 21.51.
Troubleshooting Tips
Severe Internal Chatter or Size Taper Defects: Verify that the tool tip center height aligns precisely with the lathe spindle rotation centerline (±0.01mm). An off-center tool alters the effective relief clearance, provoking rapid tool nose chipping or harsh rubbing lines along the cavity wall.
Precision Screw Jamming or Thread Stripping: Fine turning swarf generates highly localized frictional heat. Blow out fine micro-dust from the pocket seat before indexing inserts, and periodically apply anti-seize lubricant to the M2.5 screw threads to avoid terminal binding.
Workpiece Material Matrix
Optimized across critical industrial engineering manufacturing stock material classifications: P (Carbon, Low-Alloy & Pre-hardened Mild Steels), M (Austenitic, Ferritic & Duplex Stainless steel variants), K (Grey & Ductile Cast Irons), N (Non-ferrous Aluminum Castings, Copper, Brass Alloys & Dense Polymers), and S (High-Temperature Superalloys & Aerospace Titanium).
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.