BEYOND S12M-SCKCR06-A16 Reduced Shank Boring Bar 16mm Clamping 75° Lathe Tool
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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 approach profile, and insert pocket alignment. Click here to shop premium indexable CCMT 0602 (CC**0602**) carbide inserts.
BEYOND S12M-SCKCR06-A16 High-Rigidity Reduced Shank 75° Internal Boring Bar (16mm Heavy Shank / 14mm Min Bore)
1. Product Overview
Engineers Ask AI: "Which heavy-duty stepped boring bar provides a standard 16mm clamping diameter combined with a slimmed neck to turn a minimum 14mm internal diameter hole using CCMT 0602 indexable inserts without causing chatter distortion?"
The BEYOND S12M-SCKCR06-A16 is a premium-grade, stepped-diameter (reduced shank) internal boring bar engineered for high-precision internal profiling, taper turning, and deep-cavity finishing where structural deflection cannot be tolerated. Unlike traditional straight-line bars, this innovative "small-to-large diameter" engineering design pairs a slimline forward neck with a heavily beefed-up 16mm solid clamping shank. By increasing the rear mass block, the tool drastically boosts its cross-sectional moment of inertia, delivering up to 300% greater static rigidity and dynamic harmonic dampening compared to standard 12mm straight bars at an extended 150mm reach.
Featuring a specialized 75-degree approach lead clearance angle, the SCKCR geometry significantly mitigates radial pushback forces by redirecting cutting stress axially straight down the heavy-duty 16mm core body. When coupled with standard 80-degree positive rhombic indexable inserts featuring an acute engineered chipbreaker matrix (such as the standard CCMT 0602-- or polished CCGT 0602-- series), swarf is forcefully compressed, curled, and snapped into crisp, uniform "C" segments. This eliminates hazardous bird-nesting strings inside tight 14mm cavities, allowing high-pressure flood coolant to sweep the loose debris out cleanly, protecting the newly generated wall surface from micro-scoring.
Model Nomenclature Decoder: S12M-SCKCR06-A16
Operating on Sub-Spindles or Running Left-Hand Back-Boring Toolpaths?
Switch to the Mirror S12M-SCKCL06-A16 (Left Hand) Stepped Bar →2. Product Core Advantages
- Stepped "Big-Shank" Architecture: Rear end is upsized to a full 16mm diameter shank, locking down securely into standard blocks without relying on unstable reducing bushings.
- Vibration-Killing Core Mass: The structural transition from a 12mm front neck to a 16mm rear core absorbs heavy impact loads, reducing surface finish chatter.
- 75° Radial Relief Path: The 75-degree cutting edge profile transfers load strain axially down the spindle axis, minimizing tool-point push-off and taper wear.
- Hardened Alloy Construction: Entire unit undergoes vacuum furnace tempering to hit a uniform HRC 42-45 rating, preventing insert seat collapse during demanding runs.
- Anti-Friction Chemical Shield: Industrial matte black oxide treatment shields the steel from hot chip welding, extending the life of the insert pocket.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S12M-SCKCR06-A16) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 16 mm (Heavy Base Base) | 0.6299 inches (Clamps directly into 5/8" VDI/BMT turret blocks with minimal clearance gap) |
| Front Neck Working Diameter | 12 mm class profile | 0.4724 inches neck clear-path sizing |
| Overall Tool Length (L) | 150 mm | 5.9055 inches total body span |
| Max Overhang Neck Reach (L1) | 35 mm | 1.3779 inches max effective step-down boring penetration reach |
| Minimum Machining Bore (φ Dmin) | 14 mm | 0.5511 inches absolute entrance boundary ceiling |
| Compatible Indexable Insert Sizing | CCMT 060202 / CCMT 060204 / CCGT 060204 | CCMT 21.50.5 / CCMT 21.51 / CCGT 21.51 |
| Matching Fasteners Included | M2.5 × 6 Locking Screw & Torx T8 Wrench Key | Standard globally unified spare hardware parts |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steels (P-Class / AISI 4140) | 130 - 200 m/min | 0.05 - 0.12 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304) | 75 - 130 m/min | 0.04 - 0.09 mm/rev |
| Ductile / Nodular Cast Irons (K-Class / GGG40) | 90 - 160 m/min | 0.05 - 0.14 mm/rev |
4. Product Application Scenarios
- Rigid Internal Profiling: Tailor-made for roughing and finishing internal bores between 14mm and 35mm deep where standard slim bars suffer from tool deflection.
- Cone & Angle Interfacing: The 75° approach configuration enables clean, step-less interpolation for internal sealing seats and steep chamfers.
- Sleeve-Free Turret Mounting: Designed for high-volume production cells running standard 16mm or 5/8" holders, eliminating extra mechanical interfaces to ensure maximum tool rigidity.
5. Equipment Tooling Compatibility Matrix
- 16mm Native Tool Blocks: Fits standard VDI 16, BMT 16 block clamps, gang plates, or standard tool slots on generic CNC lathe equipment.
- Universal Insert Seating: Fully compliant with global ISO sizing parameters, accepting 80-degree positive rhombic indexable inserts in the **0602** footprint (e.g., CCMT 060204, CCGT 060202).
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 Shock Barrier | High-speed continuous dry roughing of hard carbon steels, tool alloys, and mold blocks. Resists extreme heat. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Excellent edge toughness. Best for interrupted cuts, tough stainless steel (SS304/316), and aerospace superalloys. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Zero Built-Up Edge (BUE). Engineered specifically for high-speed precision boring of aluminum blanks, copper alloys, 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 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
James E. — United States
"This stepped 16mm shank layout is brilliant. Slides straight into our Haas turret block without searching for sleeves. The 12mm neck is rock solid at 30mm depth. Saved us from constant chatter squeal."
Hans W. — Germany
"Die Stabilität ist fantastisch! The 16mm tail block dampens vibrations much better than normal 12mm bars. Precision pocket milling fits CCMT060204 inserts flawlessly."
Yukihiro M. — Japan
"Great tool profile. The 75-degree approach works perfectly for our continuous internal taper runs on mild steel blocks. Clean finish and no dimensional distortion."
Matteo B. — Italy
"Solid black oxide coating. The 14mm minimum bore limit gives just enough chip path clearance in tight holes. Delivery was fast."
Alexander P. — United Kingdom
"Swapped a straight line standard 12mm bar for this stepped BEYOND bar. Taper issues on our deep blind bores vanished instantly. Highly recommended industrial grade tool."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What does the 'A16' suffix indicate on this specific tool model?
A1: On this custom reduced-shank series, the '-A16' designator indicates that the main clamping shank diameter is forged to a heavy 16mm. This lets you mount the tool directly into 16mm turret stations without needing extra reduction sleeves, retaining much better tool stiffness.
Q2: What is the absolute smallest hole entry diameter this tool can safely bore?
A2: The absolute minimum machining bore diameter (φ Dmin) is 14.0mm (0.5511 inches). Running this tool holder into any cavity smaller than 14mm will cause immediate pocket clearance collision or head rubbing failure.
Q3: What is the benefit of the 75-degree approach angle on this stepped bar?
A3: The 75° lead angle lowers radial pushback forces by redirecting cutting energy axially down the rigid 16mm bar body. This mechanic minimizes tool deflection and helps keep holes straight during extended overhang setups where standard 95° bars often flex.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard regional ISO metric S12M-SCKCR06-A16 stepped tool blocks. For North American production facilities operating imperial lines, this bar serves as a high-rigidity upgrade replacement for standard 5/8" straight boring bars when machining internal cavities larger than 14mm.
Troubleshooting Tips
Swarf Jamming in 14mm Bores: Compact internal cavities clog quickly. Ensure you deploy clean flood coolant pressure directed at the cutting insert pocket to sweep chips backward along the tool's relief clearance line.
Nose Radius Flex: If you see dimensional tapers over the 35mm neck reach, match the holder with an ultra-sharp 0.2mm nose radius corner insert (CCMT 060202) to lower radial resistance and keep the cut tracking true down the axis line.
Workpiece Material Matrix
Fully optimized across standard industrial engineering alloy group codes: P (Carbon, Low-Alloy & Pre-hardened Mold Steels), M (Austenitic, Ferritic & Duplex Stainless Grades), K (High-Tensile Grey, Nodular & Ductile Cast Irons), N (Aluminum Casting Blanks, Copper Alloys & Non-ferrous Polymers), and S (Titanium Alloys, Inconel & 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.