BEYOND SBJ1625-200 Boring Bar Tool Holder (16mm / 0.63" Shank Dia, 25mm Minimum Bore, 200mm Overall Length)
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BEYOND SBJ1625-200 Indexable Boring Bar Tool Holder
ISO/ANSI Standard Precision Internal Turning Tool Holder | 16mm Shank 200mm Length for Indexable Inserts
1. Product Overview
"Which indexable boring bar tool holder featuring a 16mm shank diameter, 25mm minimum bore capacity, and an extended 200mm overall length provides maximum rigidity for deep small-diameter internal CNC lathe turning?"
The BEYOND SBJ1625-200 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 25mm, and an extended overall length of 200mm, this tool body is optimized for deep-reach internal turning, boring, and profiling operations on CNC lathes.
Forged from premium alloy steel and vacuum heat-treated to HRC 42–45, the robust extended shank structure incorporates specialized 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
- 200mm Extended Reach & 16mm Shank: Designed to provide stable internal access for deep cavity boring applications while fitting standard lathe tool holding blocks.
- 25mm Minimum Bore Capacity: Engineered specifically for precision internal diameter (ID) turning in smaller clearance envelopes.
- High-Rigidity Alloy Steel Body: Heat-treated to HRC 42–45 to resist deflection and minimize chatter during extended overhang operations.
- Optimized Chip Evacuation: Internal design prevents chip clogging within narrow deep bores, protecting the machined surface finish from re-cutting chips.
- Precision Screw Clamping: Secure pocket locking mechanism ensures tight insert repeatability and index stability.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: SBJ1625-200
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 (SBJ1625-200) | Metric / Imperial Equivalence |
|---|---|---|
| Shank Diameter | 16.0 mm Cylindrical Shank | 0.630 in (~5/8" Shank) |
| Minimum Bore Diameter | 25.0 mm | 0.984 in (~1" Min Bore) |
| Overall Length (L) | 200.0 mm | 7.874 in (Extended 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 (Extended Small Bore Operations)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 130 – 200 m/min | 0.08 – 0.20 mm/rev | 0.2 – 1.5 mm | Emulsion / Flood |
| Alloy / Mold Steel (P25–P35) | 90 – 150 m/min | 0.06 – 0.18 mm/rev | 0.2 – 1.2 mm | Flood Coolant |
| Stainless Steel (M20–M35) | 75 – 120 m/min | 0.06 – 0.15 mm/rev | 0.15 – 1.0 mm | High Pressure Coolant |
| Cast Iron (K15–K30) | 110 – 180 m/min | 0.10 – 0.22 mm/rev | 0.2 – 1.8 mm | Dry / Air Blow |
4. Applications & Equipment Compatibility
Primary Machining Operations: Deep small-bore internal turning, internal rough and finish boring, counterboring, and long-reach ID profiling.
Machine Tool Compatibility: CNC Turning Centers, CNC 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 SBJ1625-200 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
- Extended Reach Rigidity: Carefully engineered steel body profile to maintain stability and control deflection over a 200mm length in tight 25mm bores.
- 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 lathe tool blocks, the 200mm length enables deep internal reach, and the 25mm minimum bore capacity accommodates narrow, deep internal turning operations.
A: Decrease both feed rate (fn) and depth of cut (ap) by 20% compared to standard length bars, maximize clamping depth in the turret, and utilize sharp positive inserts.
A: High-pressure coolant delivery through internal channels is vital to evacuate chips efficiently out of restricted 25mm bore envelopes and avoid tool binding.
• Direct OEM Equivalents: Sandvik CoroTurn Long-Reach Small Boring Bar | Kennametal Extended ISO Internal Turning Bar.
• Chatter Mitigation Tip: Due to the extended 200mm overhang on a 16mm body, if harmonic vibration occurs, reduce feed rate (fn) by 20% and ensure the overhang does not exceed recommended ratios for small diameters.
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.