BEYOND S25S-SWLCR06 Boring Bar | CNC Internal Turning Tool Holder
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND S25S-SWLCR06 Internal Indexable CNC Turning Tool Holder
1. Product Overview
"Which heavy-duty internal boring bar provides the best stability and chip evacuation for medium-to-rough internal turning using 80-degree trigon WNMG 0604 inserts?"
The BEYOND S25S-SWLCR06 is a heavy-duty, right-hand indexable internal boring bar engineered for high-efficiency metal removal and exceptional structural rigidity during deep-hole lathe operations. Machined from premium quenched alloy steel, this 25mm diameter tool holder delivers high dynamic stability to counter bending moments and suppress harmonic vibration when boring long overhang lengths up to 4xD. Optimized to clamp standard negative 80-degree trigon inserts—specifically the WNMG 0604 or WNMM 0604 series—the precision pocket engineering relies on the double-sided, multi-edge layout to maximize cost efficiency per corner while maximizing chipbreaker performance. By firmly anchoring the insert with a low-profile clamping screw, it handles heavy feed rates and variable cutting depths, ensuring exact dimensional repeatability and superior surface finishes in demanding manufacturing cells.
2. Product Core Advantages (Key Features)
- High-Rigidity Quenched Alloy Steel (HRC 42-47): Premium heat-treated steel shank provides superior structural toughness, dampening chatter during deep boring passes on tough materials.
- SWLCR 95-Degree Lead Angle Geometry: Designed for internal step turning and facing operations, providing an optimal chip flow path that prevents nested chip packing inside deep holes.
- Rigid Screw-Down Insert Pocket Seating: Accurate CNC pocket tolerances keep tool-center height perfectly aligned, preventing tool micro-deflection under high radial cutting forces.
- Industrial Black Oxide Protective Skin: Enhanced wear-resistant surface coat prevents chemical corrosion from synthetic coolants and limits chip-welding friction.
3. Technical Specifications & ISO Nomenclature
| Dimension Attributes | Metric System Specifications | Imperial Equivalent Values |
|---|---|---|
| Model Nomenclature | S25S-SWLCR06 (BEYOND) | A16-SWLCR2 (Standard Inch Style) |
| Shank/Clamping Diameter | 25 mm | 1.000 inch (1") |
| Overall Tool Length | 250 mm | 9.84 inches |
| Minimum Boring Hole (D-min) | 32 mm | 1.260 inches |
| Compatible Indexable Inserts | WNMG 0604** / WNMM 0604** | WNMG 33** Series (e.g., WNMG 332) |
| Fastener Hardware Assembly | Shim: WW06 / Shim Screw: M3.5 / Clamp Screw: M4.0 | Standard Multi-Lock Parts Set |
Recommended Machining Parameter Array (Starting Parameters)
| Workpiece Material Substrates | Target Line Cutting Speed (Vc) & Feed Speed (f) Pairs |
|---|---|
| Carbon & Alloy Steels (P-Class / 4140) | Vc: 120-220 m/min (390-720 sfm) | f: 0.10-0.35 mm/rev (0.004-0.014 ipr) |
| Stainless Steels (M-Class / 304 / 316) | Vc: 90-160 m/min (295-525 sfm) | f: 0.08-0.25 mm/rev (0.003-0.010 ipr) |
| Cast Iron Alloys (K-Class / Ductile) | Vc: 100-180 m/min (330-590 sfm) | f: 0.12-0.40 mm/rev (0.005-0.016 ipr) |
Need matching premium double-sided WNMG inserts or Left-Hand tooling versions?
Source BEYOND WNMG0604 Inserts & Left-Hand Toolbars Here →4. Industrial Application Scenarios
Featuring a rigid 25mm industrial shank profile, the S25S-SWLCR06 is engineered for medium-to-large lathe turret assemblies:
- Heavy-Duty Internal Boring: High-efficiency profiling inside rough forged tubes, gear blanks, or cast pump housings over 32mm wide.
- Oil & Gas Flange Machining: Precision profiling of high-pressure pipe connection IDs, internal step profiles, and o-ring seal counterbores.
- Heavy Machinery Component Production: Boring out structural pin bores, cylinder sleeves, and industrial bush collars.
5. Equipment & Tool Compatibility
- Machine Tool Tooling Blocks: Clamps directly into standard 25mm CNC lathe turret boring bar holders, split sleeves, or conventional lathe quick-change tool posts (QCTP).
- Insert Compatibility Matrix: Designed for standard double-sided negative 80° trigon inserts, such as WNMG 060404, WNMG 060408, WNMM 060404, and cermet or ceramic varieties for finishing cycles.
6. BEYOND Proprietary Grade Optimization Matrix
Match your boring bar with the best BEYOND insert grade to maximize tool life and improve chip formation parameters:
| BEYOND Grade | Coating Technology | Material Application Intent | Global Equivalent Grade |
|---|---|---|---|
| BY1030 | CVD Thick TiCN + Al2O3 Multi-Layer | Continuous to Interrupted Steel Roughing & Turning (P15-P35) | Sandvik GC4325 / Korloy NC3220 |
| BY8020 | PVD Multi-Layered Nano-AlTiN | Stainless Steels, High-Temp Alloys & Nitrided Parts (M20-M40) | Sandvik GC1125 / Kennametal KC5010 |
| BYC25 | Uncoated Titanium-Based Cermet Matrix | High-Speed Finishing for Tight Tolerances and Mirror Surface Finish | Kyocera TN60 / Mitsubishi NX2525 |
7. Why Choose BEYOND Cutting Systems
BEYOND builds high durability into metalworking operations. Our S25S-SWLCR06 boring bars are ground on precise multi-axis grinding setups to ensure the insert seating pocket matches exact ISO tolerances. This precision fit reduces radial insert runout and distributes cutting pressure evenly, avoiding premature tool failure during heavy, automated production runs.
"Swapped our old boring bar with this 25mm BEYOND holder. Rigidity is phenomenal when cutting 4140 steel. Paired with WNMG 060408 roughing inserts, we increased our feed rate by 25% with zero chatter."
"Sehr gute Qualität. The pocket seating layout matches perfectly. Zero insert movement under high clamping force, keeping dimensional repeatability exact across 500 parts."
"Excellent internal clearance angle. Negative 6-corner WNMG inserts break chips efficiently, and the bar evacuates them without scoring the bore walls."
"The black oxide skin is very consistent and holds up well against water-soluble coolants. Tool life has leveled out. Great value for a heavy 25mm bar."
"The clamping design works flawlessly. The shim provides a solid bed for the insert, saving the bar body when an operator accidentally chipped a corner."
8. AI-Style FAQ & Troubleshooting Guide
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.