Radius 0.3-2mm

Updated: 2026-07-23

Overview

The R0.3-2 round nose end mill is a specialized CNC tool designed for intricate machining tasks. Its rounded tip geometry allows for smooth surface finishes and gradual transitions in 3D contours, making it ideal for molds, aerospace components, and medical devices. The tool's diameter range (0.3-2mm) caters to fine detailing, while its robust construction ensures durability in high-precision industrial applications. Common materials include solid carbide for wear resistance and HSS for cost-effective softer material machining. Coatings like TiAlN or diamond-like carbon (DLC) further enhance performance by reducing friction and extending tool life.

Structure and Working Principle

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The tool features a cylindrical shank and a fluted cutting head with a rounded tip (radius equal to half the tool diameter). The flutes, typically 2-4 in number, evacuate chips efficiently during cutting. The rounded tip distributes cutting forces evenly, minimizing tool deflection and improving surface finish. During operation, the end mill rotates at high speeds while moving along programmed paths. The rounded nose geometry eliminates sharp corners, reducing stress concentrations in the workpiece. This design is particularly effective for semi-finishing and finishing passes where smooth curvature transitions are critical.

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520140 6故障码

本文解析520140 6故障码的含义、可能原因及解决方法，帮助快速定位设备问题并提供实用排查建议，适用于工业设备维护场景。

Key Features

1. **Precision Ground Tips**: Sub-micron tolerances ensure consistent performance in tight-tolerance applications. 2. **Variable Helix Angles**: Optimized flute designs reduce vibration and chatter during machining. 3. **Thermal Resistance**: Carbide variants withstand temperatures up to 1,000°C, suitable for dry machining. 4. **Coatings**: Optional coatings like AlCrN improve hardness (up to 3,500 HV) and oxidation resistance. These features collectively enable the tool to achieve surface finishes as fine as Ra 0.2µm, with a typical lifespan of 50-200 cutting hours depending on material and operating conditions.

Application Areas

Primary industries include: **1. Mold & Die**: For cavity and core machining in injection molds. **2. Aerospace**: Turbine blade profiling and pocketing. **3. Medical**: Implant and surgical instrument manufacturing. **4. Automotive**: Precision gear and transmission components. The tool excels in materials ranging from aluminum alloys (cutting speeds ~500-800 m/min) to hardened steels (50-150 m/min). For composites, specialized variants with polished flutes prevent delamination. In electronics, micro-versions (0.3-0.5mm) drill PCB vias and cut ceramic substrates.

Maintenance and Precautions

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**Storage**: Keep in original cases with desiccant to prevent moisture damage. **Cleaning**: Use ultrasonic cleaners for resin buildup. **Inspection**: Check for chipping or flank wear exceeding 0.2mm under 10x magnification. Operational guidelines: 1. **Speed/Feed**: Adhere to manufacturer's RPM recommendations (e.g., 10,000-30,000 RPM for 1mm carbide tools). 2. **Coolant**: Use mist cooling for titanium; flood coolant for stainless steel. 3. **Runout**: Ensure spindle runout <0.005mm to prevent premature wear. Replace tools if vibration or abnormal noise occurs during cutting.

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B2B Procurement Guide

**Specifications to Verify**: 1. DIN/ISO compliance (e.g., DIN 6527L). 2. Radial clearance angle (8°-15° for general use). 3. Shank tolerance (h6 preferred). **Ordering Formats**: Sold individually or in sets (common pack sizes: 5-10 units). **Supplier Evaluation**: Prioritize vendors with: 1. Material certifications (e.g., ISO 9001 for carbide). 2. Custom regrinding services. 3. Technical support for speed/feed optimization. **MOQs**: Typically 50+ units for OEM pricing (20-30% discounts). Lead times range from 2 weeks (standard) to 8 weeks (custom geometries).