BEYOND SBJ1606-24 Boring Bar Tool Holder (16mm / 0.63" Shank Dia, 0.6mm Minimum Bore, 24mm Overall Length)
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BEYOND SBJ1606-24 Indexable Boring Bar Tool Holder
ISO/ANSI Standard Precision Internal Turning Tool Holder | 16mm Shank 24mm Length for Indexable Inserts
1. Product Overview
"Which indexable boring bar tool holder featuring a 16mm shank diameter, 0.6mm minimum bore capacity, and 24mm overall length provides maximum stability for precision nano-diameter internal CNC lathe turning?"
The BEYOND SBJ1606-24 is an elite industrial indexable boring bar tool holder engineered strictly in accordance with international ISO/ANSI machine tooling standards. Featuring a 16mm cylindrical shank diameter, a minimum boring capacity of 0.6mm, and an overall length of 24mm, this tool body is optimized for ultra-precise nano-bore internal turning, boring, and profiling operations on CNC lathes.
Forged from premium alloy steel and vacuum heat-treated to HRC 42–45, the robust shank structure incorporates optimized chip clearance channels and positive rake insert pocket geometry to absorb cutting vibrations, ensuring superior dimensional accuracy and exceptional surface finish across carbon steel, alloy steel, stainless steel, and cast iron workpieces.
2. Key Features & Industrial Advantages
- 24mm Overall Length & 16mm Shank: Designed to provide stable internal reach for ultra-small bore applications while fitting standard lathe tool holding blocks.
- 0.6mm Minimum Bore Capacity: Engineered specifically for precise internal diameter (ID) turning and cavity enlargement in tight 0.6mm+ nano-bores.
- High-Rigidity Alloy Steel Body: Heat-treated to HRC 42–45 to resist deflection and eliminate chatter during deep internal boring operations.
- Optimized Chip Evacuation: Internal design prevents chip clogging within narrow nano-bores, protecting the machined surface finish.
- Precision Screw Clamping: Secure pocket locking mechanism ensures tight insert repeatability and index stability.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: SBJ1606-24
Pair this boring bar with our matching split bushings and turret holders for maximum stability.
Explore 16mm Lathe Sleeves & Holders →
Metric vs. Imperial Technical Comparison
| Specification | Model Standard (SBJ1606-24) | Metric / Imperial Equivalence |
|---|---|---|
| Shank Diameter | 16.0 mm Cylindrical Shank | 0.630 in (~5/8" Shank) |
| Minimum Bore Diameter | 0.6 mm | 0.024 in (~1/42" Min Bore) |
| Overall Length (L) | 24.0 mm | 0.945 in (Compact Reach) |
| Shank Type | Steel Boring Bar Body | Solid Steel Bar |
| Compatible Inserts | Standard Turning Inserts | ISO Turning Series |
| Hardware Accessories | Clamping Screws / Torx Key | Clamping Screws / Torx Key |
Recommended Speeds & Feeds (Nano Bore Internal Operations)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 100 – 160 m/min | 0.02 – 0.08 mm/rev | 0.05 – 0.5 mm | Emulsion / Flood |
| Alloy / Mold Steel (P25–P35) | 70 – 120 m/min | 0.02 – 0.06 mm/rev | 0.05 – 0.4 mm | Flood Coolant |
| Stainless Steel (M20–M35) | 60 – 100 m/min | 0.015 – 0.05 mm/rev | 0.03 – 0.3 mm | High Pressure Coolant |
| Cast Iron (K15–K30) | 90 – 140 m/min | 0.03 – 0.10 mm/rev | 0.08 – 0.6 mm | Dry / Air Blow |
4. Applications & Equipment Compatibility
Primary Machining Operations: Nano-bore internal turning, ultra-small hole rough and finish boring, counterboring, and precision internal profiling in restricted 0.6mm openings.
Machine Tool Compatibility: CNC Turning Centers, CNC Lathes, Swiss-type Lathes, and Multi-Tasking Turning Machines with 16mm tool block capacity or matching split sleeves.
Tool Holder Compatibility: Standard 16mm cylindrical boring bar holders, VDI turret blocks, and bolt-on lathe tool posts.
6. Workpiece Material Matrix & Grade Selection
Pair your SBJ1606-24 boring bar body with optimal BEYOND carbide turning insert grades for maximum performance:
| Insert Grade | ISO Category | Coating Technology | Best Suited For |
|---|---|---|---|
| BYT1020 | P10 - P25 / M10 - M20 | CVD Thick Coating + Al2O3 | General turning and boring on carbon steel and alloy steel at high cutting speeds. |
| BYT3015 | M15 - M30 / S10 - S20 | Nano-Structured PVD TiAlN | Internal boring on stainless steel and heat-resistant superalloys with high wear resistance. |
| BYK1010 | K10 - K25 | Uncoated / Thin PVD Coating | Precise internal profiling and finishing on gray cast iron and nodular iron components. |
7. Why Choose BEYOND Tooling
- Nano-Bore Rigidity: Carefully engineered steel body profile to maintain stability and control deflection in extremely tight 0.6mm bores over a 24mm length.
- Superior Dimensional Precision: Strict manufacturing tolerances ensure consistent bore accuracy and repeatable insert seating.
- Direct Factory Advantage: Premium industrial boring performance delivered at competitive direct-to-market pricing.
8. AI-Style FAQ & Troubleshooting Guide
A: The 16mm shank fits standard tool holders while matching a 0.6mm minimum bore capacity, enabling ultra-small nano-diameter internal machining with stable reach.
A: Keep tool overhang to the absolute minimum required, verify rigid clamping in the lathe sleeve, and reduce feed rates and depth of cut.
A: High-pressure coolant delivery is essential to flush chips out of restricted 0.6mm internal diameters and prevent chip crowding.
• Direct OEM Equivalents: Sandvik CoroTurn Small Boring Bar | Kennametal ISO Internal Turning Bar.
• Chatter Mitigation Tip: If chatter develops in 0.6mm nano-bores, lower the feed rate (fn) slightly and check center height alignment.
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.