R2 (4mm) Steel Chamfer carbide end milll
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BEYOND R2 (4mm) Steel Chamfer End Mill – Arc Type Up & Down Chamfer Cutter
The BEYOND R2 (4mm) Steel Chamfer End Mill is specially designed for precision chamfering and edge rounding on steel materials. Featuring an arc-shaped design with both up and down chamfering capability, this tool ensures smooth transitions, fine surface finishes, and long-lasting durability under high-speed CNC milling operations.
Key Features
- Material: High-performance tungsten carbide, optimized for steel cutting.
- Design: Arc-shaped up & down chamfering edge for dual-surface finishing.
- Chamfer Radius (R): R2 (4mm diameter)
- Application: Suitable for carbon steel, alloy steel, and pre-hardened steel.
- Shank: Precision-ground cylindrical shank for stable tool holding.
- Coating: TiAlN or AlTiN coating for high wear resistance and extended tool life.
- Machine Compatibility: Perfect for CNC machining centers and milling machines.
Technical Specifications
| Model | Radius (R) | Cutting Diameter (d1) | Shank Diameter (d2) | Overall Length (L) | Material |
|---|---|---|---|---|---|
| R2-4MM | R2 | 4mm | 4mm | 50mm | Tungsten Carbide |
Advantages
- Designed for steel materials – excellent wear and heat resistance.
- Dual-side arc chamfering reduces tool changes and improves efficiency.
- Provides smooth edges without burrs or vibration.
- Ideal for precision mold, die, and mechanical component processing.
Recommended Cutting Parameters
- Cutting Speed (Vc): 100–180 m/min
- Feed per Tooth (fz): 0.02–0.05 mm/tooth
- Depth of Cut (ap): 0.3–0.8 mm
Applications
This chamfer end mill is widely used in metalworking, mold making, and precision part finishing. Suitable for chamfering, deburring, and edge rounding on steel parts where high accuracy and surface finish are required.
Why Choose BEYOND?
BEYOND specializes in high-quality CNC cutting tools, offering exceptional precision, durability, and performance. Each tool undergoes strict quality inspection to ensure consistent results in your machining process.
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.