Coated 2-Flute Solid Carbide Micro Drill for Hardened Steel
Consistent Quality
Consistent geometry across repeat orders.
유연한 주문
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
표준 및 맞춤형
Standard sizes and custom configurations.
Micro Drill for Hardened Steel
This coated 2-flute solid carbide micro drill is designed for precision small-hole machining in selected hardened steels, tool steels, mold steels and other confirmed hard materials. Fine-grain solid carbide, a wear-resistant PVD coating, strengthened cutting lips and precision-ground point geometry support cutting-edge stability under high local cutting load and heat. Flute length, shank structure, coating and edge preparation can be matched to the cutting diameter, hole depth, actual workpiece hardness, machine rigidity, coolant method and required tolerance.
Fine-Grain Carbide
2 Spiral Flutes
PVD Coated
강화 강철
Key Configuration
Wear-Resistant PVD Coating
The coated surface is intended to improve resistance to abrasive wear and thermal loading in selected hardened-steel applications.
Strengthened 2-Flute Geometry
Two spiral flutes balance cutting-edge support, drill-core rigidity and chip space for small-diameter hardened-steel drilling.
Controlled Micro Flute Length
Flute length can be matched to diameter and hole depth to reduce unnecessary overhang and support micro-drill stiffness.
Key Product Advantages
Fine-Grain Carbide Rigidity
Fine-grain solid carbide provides the rigidity and cutting-edge support needed for small-diameter drilling under the higher cutting loads generated by hardened steel.
Precision-Ground Point Geometry
A precision-ground drill point supports controlled entry and balanced cutting-lip engagement when the tool is used on a stable surface with low runout.
Strengthened Cutting-Edge Support
Application-specific edge preparation helps support the micro cutting edge where material hardness, local cutting load and edge-chipping risk are higher.
PVD Coating for Wear Control
A wear-resistant PVD coating helps protect the cutting lips and flank surfaces from abrasive wear and concentrated heat during stable hardened-steel micro drilling.
Workpiece Material Compatibility
Applications & Target Scope
- Micro vent holes in hardened mold inserts and dies
- Positioning and functional small holes in tool-steel components
- Oil and lubrication passages in hardened precision parts
- Blind and through micro holes
- Holes before micro EDM or micro reaming where applicable
- Drawing-specific small holes in confirmed hardened materials
Product & Machining Details
Tool Nomenclature & Dimensions
Reference dimensions and technical configuration for this coated 2-flute solid carbide micro drill for hardened steel. The standard sizes shown below use a 3 mm cylindrical shank, while flute length varies according to cutting diameter. Coating, point geometry, edge preparation and final application range should be confirmed according to the actual hardened-steel grade, hardness and hole requirement.
Standard Size Matrix
The listed dimensions are simplified by grouping cutting diameters that use the same flute length and the same 3 mm shank. Format: D × L1 × d = cutting diameter × flute length × shank diameter.
Hardened-Steel Micro-Drilling Guidance
- Confirm Actual Hardness: Material grade alone is not enough; confirm the heat-treatment condition and measured hardness before selecting the drill.
- Control Runout: Use a clean precision holder and verify runout close to the cutting section, especially for very small diameters.
- Keep Overhang Short: Use the shortest practical flute and projection length that can reach the required hole depth.
- Monitor Chip & Heat: Maintain stable coolant or mist delivery and stop for inspection if cutting load, heat or chip packing increases abnormally.
Recommended Starting Cutting Parameters
Starting cutting conditions should be adjusted according to drill diameter, hardened-steel grade, measured hardness, hole depth, coating, tool overhang, spindle runout and coolant delivery. Smaller diameters and higher-hardness workpieces generally require more conservative application review.
Solid Carbide Drill Cutting Data Guide
Use the guide as a starting reference, then adjust for micro diameter, actual hardness, coating and machine rigidity.
Micro Drill Product Family Overview
Compare workpiece hardness, hole depth and machine setup before selecting the most appropriate micro-drill configuration.
Hardened-Steel Micro Drill
PVD Coated (Current)
Stainless Micro Drill
ISO M Applications
Long-Neck Micro Drill
Deep / Recessed Small Holes
Custom Micro Drill
Drawing-Based Geometry
For additional drill sizes and related series, View the Solid Carbide Drill Catalog . Custom micro-drill dimensions and hardened-steel configurations can be reviewed according to your drawing and application requirements.
Hardened Steel Micro Drill Customization
Micro diameter, flute length, reinforced point geometry, edge preparation and high-temperature coating can be configured for confirmed hardened-steel applications. Each design is reviewed against the exact steel grade, hardness, hole depth and machine rigidity.
Reinforced Micro Geometry & Coating Configuration
The micro-point, web, flute profile and cutting-edge preparation can be strengthened to support edge stability and controlled drilling in hardened steel while limiting excessive cutting load.
OEM 및 자체 브랜드 서비스
OEM manufacturing and private-label supply options for mold-component manufacturers, precision-tool distributors and hardened-steel machining customers.
Tool Identification
Tool codes, diameter specifications and batch identification can be applied according to the available shank area.
Protective Packaging
Individual protective tubes, internal supports, diameter labels and private-label packaging help protect delicate micro cutting edges.
Commercial Terms
Flexible MOQ options for sample evaluation, custom-size trials, repeat orders and scheduled batch supply.
Technical Workflow
Inquiry
Submit the steel grade, hardness, hole dimensions, tolerance and quantity.
Engineering
Reinforced geometry, edge preparation, coating and setup rigidity are reviewed.
Commercial
Quotation, trial quantity, production schedule and delivery terms are confirmed.
Production
Precision micro-grinding, controlled edge honing, PVD coating and marking.
Quality Control
Diameter, point geometry, coating condition, runout and micro-edge quality are inspected.
Inspection & Quality Control
Drill dimensions, cutting-edge geometry and visible surface condition are checked according to the confirmed product specification and application requirements.
Protective Packing for Shipment
Finished drills are protected individually before batch labeling and export-carton reinforcement.
Individual Tool Protection
Each drill is individually protected in a plastic tube to reduce contact damage during storage, handling and transportation.
Batch & Label Verification
Tools are grouped and labeled by specification to support order verification before carton packing.
Export Carton Protection
Batch packaging, cushioning materials and reinforced export cartons are selected according to the order quantity and shipping method.
Reference Lead Time
The following timeframes are general references. Availability and production scheduling are reviewed for each order.
Shipping Options
Shipping arrangements can be selected according to order size, delivery schedule and destination.
Product FAQs
Product-specific information about hardened-steel micro drilling, coating selection, available sizes, coolant requirements and custom configurations for this coated 2-flute solid carbide micro drill.
What hardened-steel materials can this micro drill machine?
This micro drill is intended for selected hardened steels, tool steels, mold steels and heat-treated alloy steels. The exact material grade and hardness should be confirmed before selecting the cutting geometry, coating and starting parameters, especially for higher-hardness or deeply hardened workpieces.
Why is a coated 2-flute design used for hardened-steel micro drilling?
The 2-flute configuration provides cutting-edge support together with chip space for small-diameter drilling. A suitable PVD coating can help reduce friction and protect the cutting edges under the higher heat and cutting load associated with hardened-steel applications.
What diameters and length configurations are available?
Standard micro-drill sizes can be supplied according to the product series, while non-standard cutting diameters, flute lengths, shank diameters and overall lengths can be reviewed according to the required hole dimensions and customer drawing.
What machining conditions are important for very small diameters?
Low spindle runout, rigid toolholding and short tool overhang are especially important in hardened-steel micro drilling. Stable feed should be maintained without unnecessary dwell, and chip evacuation should be monitored carefully because small cutting edges are highly sensitive to overload and vibration.
Can the coating and point geometry be customized for different hardness levels?
Yes. Point geometry, edge preparation, flute configuration and PVD coating can be reviewed according to the steel grade, hardness, hole depth and required tool life. Final recommendations should be based on the actual machining conditions rather than hardness alone.
What information is required for a quotation?
Please provide the required cutting diameter, hole depth, flute length, workpiece material grade, hardness, coolant condition and estimated quantity. For non-standard micro drills, a drawing or dimensional sketch is recommended so the geometry, length and tolerances can be confirmed before quotation.
Ordering & OEM FAQs
General information for trial orders, mixed-size purchasing, private labeling and production scheduling.
Do you accept small trial orders?
Yes. Small trial orders are available for application testing, tool-life evaluation and distributor approval before moving to larger-volume purchasing.
Can mixed sizes be ordered together?
Yes. Different cutting diameters and length configurations can normally be combined in one order when the carbide, coating and production requirements are compatible. Mixed-size orders are suitable for distributors and multi-size application testing.
Is OEM laser marking available?
Yes. Custom laser marking for logos, model numbers, tool sizes and batch identification can be reviewed together with private labels, coating identification and OEM packaging requirements.
What is the typical production lead time?
Lead time depends on the cutting diameter, flute length, coating, quantity and whether the drill uses a standard or custom configuration. Final production scheduling is confirmed after specifications and coating requirements are approved.
Downloads & Technical Resources
Access product dimensions, series information and starting cutting data for product selection and application review.
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.
