BEYOND MCBNL2525M12 Left-Hand External Turning Tool Holder | M-Type Clamping
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MCBNL2525M12
Professional Left-Hand M-Type External Turning Tool Holder
Brand: BEYOND | Origin: China | Industrial High-Rigidity Series
⚠️ ATTENTION: The tool holder includes all spare parts. Inserts (Blades) are NOT included.
Model Identification Guide
Clamping: Multi-lock
Shape: 80° Diamond
Approach: 75°
Clearance: 0°
Hand: Left Hand
25x25mm Shank
Length: 150mm
Insert: CNMG1204
Technical Specification & Series Comparison
Detailed specifications for the MCBNR / MCBNL series turning tools:
| Model Type (R/L) | Compatible Insert | Shank(hxb) | Shim | Pin | Clamp | Screw | Wrench |
|---|---|---|---|---|---|---|---|
| MCBNR/L 2525M12 | CNMG 1204xx | 25 x 25 | MC1204 | CTM617 | HL1813 | ML0625 | L3.0 |
| MCBNR/L 1616H12 / 2020K12 / 3232P12 | 16x16 / 20x20 / 32x32 | ||||||
| MCBNR/L 2525M16 / 3232P16 | CNMG 1606xx | 25x25 / 32x32 | MC1604 | CTM822 | HL2217 | ML0830 | L4.0 |
| MCBNR/L 3232P19 | CNMG 1906xx | 32 x 32 | MC1904 | CTM1025 | HL2724 | ML1035 | L5.0 |
Machining Data Recommendations
Steel & Carbon Steel (P)
Cutting Speed (Vc): 160 - 280 m/min
Feed Rate (fz): 0.15 - 0.50 mm/r
Stainless Steel (M)
Cutting Speed (Vc): 120 - 210 m/min
Feed Rate (fz): 0.12 - 0.35 mm/r
Metric vs. Imperial Shank Reference
| Metric Model: MCBNL2525M12 (25mm) | Imperial Equivalent: MCBNL 16-4D (1") |
| Metric Model: MCBNL2020K12 (20mm) | Imperial Equivalent: MCBNL 12-4C (3/4") |
| Metric Model: MCBNL3232P12 (32mm) | Imperial Equivalent: MCBNL 20-4E (1-1/4") |
Global Verified Feedback
⭐⭐⭐⭐⭐ "The MCBNL2525M12 left-hand bar is incredibly stable. Perfect for heavy-duty CNC turning." - Markus, Germany
⭐⭐⭐⭐⭐ "Fast shipping to UK. The M-type clamping provides excellent rigidity during roughing." - Robert, UK
⭐⭐⭐⭐ "Good tool life and high precision shims. Fits my CNMG inserts perfectly." - Jason, Canada
⭐⭐⭐⭐⭐ "Much better than standard holders for interrupted cuts. Zero vibration." - Liam, Australia
⭐⭐⭐⭐⭐ "Solid construction. BEYOND tool holders are my first choice for heavy machining." - S. Watanabe, Japan
Frequently Asked Questions (FAQ)
Q: Is this holder suitable for internal boring?
A: No, this is an external turning tool holder. Please browse our boring bar section for internal work.
Q: What materials can I cut with this tool holder?
A: It is suitable for steel, stainless steel, and cast iron depending on the CNMG insert grade you choose.
Q: Does it come with the wrenches?
A: Yes, all BEYOND holders come fully equipped with the appropriate wrenches, shims, and screws.
Pro Tips: Clamping System Selection
Long-tail Keywords: MCBNL2525M12, CNC Turning Bar, Left Hand Lathe Tool Holder, CNMG Indexable Bar, BEYOND Tools China, 25mm Industrial Shank.
© BEYOND CNC Tools - Industrial Precision Engineering Solutions.
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.