BEYOND D07K-SCKCR06 Spring Steel Internal Boring Bar & Turning Tool Holder | CNC Micro Boring Tool for CCMT060204 Inserts (Insert Not Included)
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BEYOND D07K-SCKCR06 Spring Steel Internal Boring Bar & Turning Tool Holder (Does Not Include Inserts)
Industrial-Grade Miniature Internal Boring & Profile Turning Bar for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching CCMT060204 80° diamond carbide turning insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND D07K-SCKCR06 is a high-rigidity spring steel internal boring bar featuring a 7mm shank diameter, engineered for precision CNC lathe micro turning and deep internal profiling. Utilizing CCMT060204 80° diamond carbide inserts, it delivers exceptional vibration dampening, tight clearance in small bores, and strict dimensional accuracy across ISO P, M, and K workpiece classifications.
1. Product Overview
"Which internal boring bar combines high spring-steel rigidity with a compact 7mm shank to eliminate chatter and enhance finish quality during small-bore turning using CCMT060204 inserts?"
The BEYOND D07K-SCKCR06 spring steel internal boring bar (frequently searched as micro internal turning tool, small bore boring bar, and CNC boring tool holder) is expertly engineered to solve deflection and chatter issues in miniature internal boring applications. Featuring a robust 7mm shank diameter and optimized length, it provides exceptional stability inside narrow pre-drilled holes. Forged from premium 60Si2Mn spring steel, the bar absorbs harmonic vibrations and delivers mirror-finish bore walls when paired with CCMT060204 80° diamond inserts.
ISO Model Designation Breakdown
Need alternative boring bar configurations or diameters?
2. Key Features
- 7mm Compact Spring Steel Shank: Provides maximum rigidity and clamping stability for small-diameter internal turning applications.
- Hardened 60Si2Mn Spring Steel Core: Offers superior elastic modulus and damping capability to suppress harmonic chatter in deep micro-boring tasks.
- Precision CCMT Pocket Interface: Custom-milled screw clamping seat securely locks CCMT060204 80° diamond inserts against high-frequency micro cutting vectors.
- High Dimensional Repeatability: Maintains strict tolerance consistency over extended production runs.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification | Imperial Equivalent |
|---|---|---|
| Shank Diameter (D) | 7.0 mm | Approx. 0.276" (9/32") |
| Overall Length (L) | 125 mm | 4.92" |
| Minimum Bore Diameter | 9.0 mm | Approx. 0.354" |
| Compatible Insert Model | CCMT060204 | Diamond 80° 06 Series Standard |
Recommended Cutting Parameters (CCMT060204 Insert) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (f, mm/rev) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 100 - 180 m/min | 0.03 - 0.08 mm/rev |
| ISO M (Stainless Steel) | 70 - 120 m/min | 0.02 - 0.06 mm/rev |
| ISO K (Cast Iron) | 90 - 160 m/min | 0.03 - 0.09 mm/rev |
4. Product Applications
- Small Bore Internal Finishing: High-precision internal turning and boring in tight diameter tolerances.
- Internal Contouring & Profiling: Executing fine internal transitions, chamfers, and undercuts in restricted spaces.
- Instrument & Medical Micro-Machining: Precision internal machining for miniature mechanical components and fittings.
- Hydraulic Valve Body Production: Strict tolerance adherence in small internal clearance configurations.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard CCMT060204 80° rhombic indexable carbide inserts.
Tool Holding: Mounts securely into standard 7mm split boring bar sleeves, lathe tool holder blocks, and CNC turrets.
Clamping Hardware: Fitted with high-precision miniature Torx locking screws designed to secure tiny diamond inserts without thread stripping.
6. Material Comparison: 60Si2Mn Spring Steel vs. Standard Carbon Steel
Micro-Vibration Suppression: Spring steel absorbs micro-harmonic feedback much faster than standard carbon steel, preventing chatter ripples on bore walls.
Bending Rigidity Advantage: Maintains superior elastic deformation recovery when subjected to high radial cutting loads in deep overhangs.
Fatigue Endurance: Preserves clamping tension and structural stability over intensive continuous production runs.
7. Why Choose BEYOND Tooling?
- ISO 5608 Manufacturing Standards: Certified production lines ensuring rigorous compliance with international micro-tool mechanical tolerances.
- Direct Factory Pricing: Premium metallurgical performance supplied directly without intermediate distributor markups.
- Expert Technical Support: Professional machinists ready to help configure feed rates, speeds, and micro insert grades.
8. Frequently Asked Questions
Q: Does the BEYOND D07K-SCKCR06 package include the CCMT060204 insert?
A: No. To allow complete grade flexibility depending on your specific workpiece material and coating needs, the CCMT insert is sold separately.
Q: What is the minimum bore diameter required to use this 7mm boring bar?
A: The minimum recommended bore diameter for this tool is 9.0mm to provide adequate clearance for chip evacuation and bar body entry.
Q: Is this tool suitable for external turning operations?
A: No. This D07K-SCKCR06 model is specifically engineered for internal micro-boring and turning; please refer to our external tool catalog for outer diameter work.
Grade Comparison: PVD-coated micro carbide grades offer superior edge toughness for stainless steel internal boring; CVD-coated grades perform exceptionally well in high-speed alloy steel finishing.
Equivalent Models: Fully cross-compatible with universal modular micro internal boring systems adhering to strict ISO / ANSI manufacturing standards.
Troubleshooting: Chatter marks or poor surface finish in small bores typically indicate excessive overhang beyond recommended limits; reduce feed rate or switch to a solid carbide shank bar.
Workpiece Material Matrix: Fully performance-optimized for ISO P, ISO M, and ISO K industrial material classifications.
Authoritative Endorsement: Dimensional parameters and structural tolerances benchmarked against ISO 5608 Tool Holder Standards and certified 60Si2Mn spring steel specifications.
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.