HRC55 4-Flute Long Neck Solid Carbide Square End Mill for Steel
Consistent Quality
Consistent geometry across repeat orders.
Pedidos flexíveis
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Padrão e personalizado
Standard sizes and custom configurations.
4-Flute Long Neck Carbide Square End Mill
This 4-flute solid carbide long-neck square end mill is designed for precision machining in recessed areas, deep cavities, narrow grooves and rib features where a standard-length tool cannot reach. The reduced-neck construction provides additional clearance from the workpiece wall, while the square-end profile and four cutting edges support light side milling, profiling and finishing in carbon steel, alloy steel, mold steel and confirmed pre-hardened steel within the HRC55 series range.
Long-Neck Access for Recessed Features
Principais recursos
Extended Neck Reach
Provides access to deep pockets, recessed walls and narrow rib features.
Reduced-Neck Clearance
Helps reduce interference between the tool shank, holder and workpiece wall.
Four-Flute Stability
Supports regular tooth engagement during light side milling and finishing.
Square-End Precision
Supports flat-bottom finishing, straight walls and defined square profiles.
Product Details
Aplicativos recomendados
Deep-Cavity Finishing
Light finishing of recessed pocket walls and cavity features.
Narrow Grooves & Ribs
Machining small channels, ribs and detailed mold features.
Side-Wall Finishing
Controlled finishing of deep walls with reduced toolholder interference.
Mold & Precision Parts
Detailed profiles in molds, dies and compact mechanical components.
Especificações técnicas
Reference specifications and available metric configurations for the HRC55 4-flute long-neck solid carbide square end mill. Confirm cutting-edge length, neck diameter and the meaning of L2 on the approved drawing before production.
| PARAMETER | REFERENCE CONFIGURATION |
|---|---|
| Tipo de ferramenta | Long-neck solid carbide square / flat-end mill |
| Contagem de flautas | 4 flautas |
| Cutting Diameter | Ø1–Ø3 mm in the supplied reference list |
| Effective Neck Length | 4–30 mm according to the selected diameter and model |
| Comprimento total | 50 mm or 75 mm reference configurations |
| End Profile | Square / flat end |
| Workpiece Range | Carbon steel, alloy steel, mold steel and confirmed pre-hardened steel within the HRC55 series range |
| Primary Operations | Light side milling, profiling and finishing of recessed, narrow and deep-cavity features |
Tool Nomenclature
Cutting diameter
Effective neck length
Comprimento total
Available Sizes & Dimensions
All dimensions are in millimeters. Model format: D × L2 × L. L2 is treated as the effective neck length for this long-neck series and should be confirmed on the approved tool drawing.
| MODEL | D | L2 | L |
|---|---|---|---|
| 1 × 4 × 50 | 1 | 4 | 50 |
| 1 × 6 × 50 | 1 | 6 | 50 |
| 1 × 8 × 50 | 1 | 8 | 50 |
| 1 × 10 × 50 | 1 | 10 | 50 |
| 1 × 12 × 50 | 1 | 12 | 50 |
| 1 × 20 × 50 | 1 | 20 | 50 |
| 1 × 25 × 50 | 1 | 25 | 50 |
| 1.5 × 10 × 50 | 1.5 | 10 | 50 |
| 1.5 × 15 × 50 | 1.5 | 15 | 50 |
| 1.5 × 20 × 50 | 1.5 | 20 | 50 |
| 1.5 × 25 × 50 | 1.5 | 25 | 50 |
| 2 × 8 × 50 | 2 | 8 | 50 |
| 2 × 10 × 50 | 2 | 10 | 50 |
| 2 × 12 × 50 | 2 | 12 | 50 |
| 2 × 20 × 50 | 2 | 20 | 50 |
| 2 × 25 × 50 | 2 | 25 | 50 |
| 2.5 × 8 × 50 | 2.5 | 8 | 50 |
| 2.5 × 10 × 50 | 2.5 | 10 | 50 |
| 2.5 × 12 × 50 | 2.5 | 12 | 50 |
| 2.5 × 15 × 50 | 2.5 | 15 | 50 |
| 2.5 × 20 × 50 | 2.5 | 20 | 50 |
| 2.5 × 25 × 50 | 2.5 | 25 | 50 |
| 3 × 10 × 50 | 3 | 10 | 50 |
| 3 × 12 × 50 | 3 | 12 | 50 |
| 3 × 15 × 50 | 3 | 15 | 50 |
| 3 × 20 × 50 | 3 | 20 | 50 |
| 3 × 25 × 50 | 3 | 25 | 50 |
| 1 × 25 × 75 | 1 | 25 | 75 |
| 1 × 30 × 75 | 1 | 30 | 75 |
| 1.5 × 25 × 75 | 1.5 | 25 | 75 |
| 1.5 × 30 × 75 | 1.5 | 30 | 75 |
| 2 × 30 × 75 | 2 | 30 | 75 |
| 2 × 25 × 75 | 2 | 25 | 75 |
| 2.5 × 30 × 75 | 2.5 | 30 | 75 |
| 2.5 × 25 × 75 | 2.5 | 25 | 75 |
| 3 × 25 × 75 | 3 | 25 | 75 |
Long-Neck Machining Guidance
Minimize Projection
Use only the neck reach required for the feature and keep holder projection as short as practical.
Reduce Engagement
Lower radial and axial engagement as neck length and effective overhang increase.
Control Runout
Use a precision holder and verify spindle and tool runout before machining.
Maintain Chip Removal
Use a suitable air blast or coolant strategy and avoid chip recutting in deep features.
HRC55 4-Flute Long-Neck Square End Mill Customization
Cutting diameter, cutting-edge length, neck diameter, effective neck length, shank dimensions, overall length, four-flute geometry, square-end profile, cutting-edge preparation and coating can be reviewed for recessed, narrow and deep-cavity steel-milling applications. The long-neck and reduced-neck configuration provides additional machining reach and workpiece-wall clearance, while custom dimensions are evaluated according to feature depth, workpiece hardness, tool engagement, machine rigidity and required dimensional accuracy.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Cutting Diameter | Standard Ø1–Ø3 mm range based on the supplied series, with selected intermediate and non-standard diameters reviewed according to the confirmed tool drawing |
| Contagem de flautas | Standard 4-flute configuration for light side milling, profiling and finishing of small recessed and deep-cavity features |
| Cutting-Edge Length | Standard or drawing-defined cutting-edge length selected independently from the effective neck length according to the required axial cutting depth |
| Effective Neck Length | Reference L2 configurations from 4 to 30 mm, selected according to feature depth, required clearance and allowable tool deflection |
| Neck Diameter & Relief | Reduced-neck diameter and relief geometry reviewed to provide workpiece-wall clearance while maintaining suitable neck strength |
| Shank & Overall Length | Precision cylindrical shank with 50 mm and 75 mm reference overall lengths, or drawing-defined configurations subject to rigidity review |
| Four-Flute Geometry | Application-matched flute, core, helix and rake geometry reviewed for cutting stability, edge strength and chip control in small steel features |
| Square-End Geometry | Precision-ground flat-bottom profile for narrow grooves, cavity floors, side walls and defined square features |
| Edge Preparation | Cutting-edge preparation, end-face grinding, gash geometry and corner condition reviewed according to tool diameter, workpiece hardness and cutting load |
| Coating Selection | Wear-resistant coating selected according to the steel grade, hardness, cutting temperature, coolant strategy and required tool life |
| Workpiece & Application | Configured for carbon steel, alloy steel, mold steel and confirmed pre-hardened steel within the HRC55 series range, primarily for ribs, narrow grooves, recessed profiles and deep-cavity finishing |
| Dimensional Tolerance | Standard production tolerances or drawing-defined requirements for cutting diameter, cutting-edge length, neck diameter, effective neck length, shank diameter, overall length and runout |
Serviços de OEM e marca própria
OEM manufacturing and private-label supply options are available for industrial distributors, tooling brands and repeat-production customers. Laser identification, label content, protective packaging and coating presentation can be configured according to the approved product specification and order requirements.
Laser Etching
Custom logos, tool codes, cutting dimensions, coating identification and batch numbers can be marked according to the available shank area.
Custom Labels & Packaging
Individual protective tubes, product labels, specification details, colored packaging tubes and private-label packaging can be reviewed.
Commercial Terms
MOQ, sample evaluation, custom-size trials, repeat orders and scheduled supply programs are confirmed according to the selected configuration.
Technical Workflow
A structured review process is used to confirm standard, customized and private-label square end mill requirements before production.
Inquiry
Submit the material, hardness, milling operation, dimensions, tolerance and quantity.
Engineering
Review flute geometry, helix angle, edge preparation, coating, ap and ae.
Commercial
Confirm quotation, MOQ, sample requirements, production schedule and delivery terms.
Production
CNC grinding, end-face formation, edge preparation, coating and laser marking.
Quality Control
Inspect diameter, flute length, shank, runout, square-end geometry and cutting edges.
Quality, Inspection & Delivery
Our solid carbide square end mills are controlled through material verification, precision grinding, in-process measurement and final inspection. Key dimensions, square-end geometry, cutting-edge condition, coating appearance and product identification are reviewed according to the approved specification or drawing before packing.
Three-Stage Quality Control
Inspection checkpoints are arranged around the manufacturing process to support dimensional consistency and repeat-order control.
Incoming Material Control
Carbide substrate grade, blank dimensions and supplied material information are checked against the production requirement.
In-Process Grinding Control
Cutting diameter, flute geometry, flute length, square-end profile and shank dimensions are monitored during CNC grinding.
Final Tool Inspection
Finished tools are reviewed for specified dimensions, runout, cutting-edge condition, coating appearance, marking and packing identification.
Key Inspection Characteristics
Inspection requirements are confirmed according to the standard product specification or the approved custom drawing.
| INSPECTION ITEM | CONTROL FOCUS | CONFIRMATION BASIS |
|---|---|---|
| Cutting Diameter (DC) | Diameter and dimensional consistency | Standard specification or approved drawing |
| Flute Length (APMX) | Effective cutting length | Confirmed product size or drawing requirement |
| Shank Diameter (DCON) | Clamping-section dimension and surface condition | Applicable shank specification |
| Overall Length (OAL) | Total tool length | Standard size matrix or approved drawing |
| Deslocamento radial | Concentricity between cutting section and shank | Agreed inspection requirement |
| Square-End Geometry | End-face profile, corner condition and center-cutting form | Selected tool configuration |
| Flute & Helix Profile | Flute count, helix form and grinding consistency | Approved manufacturing configuration |
| Cutting Edge & Coating | Edge condition, visible defects and coating appearance | Application-specific production requirement |
| Marking & Identification | Tool code, dimensions and batch information where applicable | Confirmed order and packaging specification |
Measurement & Batch Traceability
Optical measuring systems, tool inspection equipment and appropriate dimensional gauges are selected according to the feature being checked.
Optical Measurement
Profile and dimensional review of specified cutting features.
Runout Verification
Concentricity review based on the agreed product requirement.
Edge Inspection
Magnified review of the end face, corners and cutting-edge condition.
Batch Identification
Order, product and batch information are linked where required for repeat supply.
Protective Packaging Process
Finished end mills are protected to reduce contact between cutting edges and to support clear product identification during storage and transportation.
Bulk-Order & Export Packaging
Bulk shipments can be arranged with reinforced cartons, protective wrapping, palletized loading or export cases according to order quantity, shipment weight and agreed transportation requirements.
Delivery Coordination
Production completion, packing method and dispatch arrangements are confirmed according to the approved order. Courier, air, sea or customer-designated shipping options can be reviewed according to shipment size and destination. Final lead time is confirmed after product specifications, quantity and packaging requirements are approved.
Product & Application FAQs
Answers to common questions about selecting and applying the HRC55 4-Flute Long Neck Solid Carbide Square End Mill for Steel.
What materials is this square end mill designed to machine?
Why use the 4-flute configuration for this application?
What milling operations are suitable for this square-end design?
Does a longer neck reduce tool rigidity?
Which coating or surface treatment should be selected?
What machining conditions should be reviewed before use?
Ordering & Customization FAQs
Information for distributors, tooling brands and customers requesting standard or application-specific configurations.
What standard sizes are available?
Can non-standard dimensions or geometry be manufactured?
Are OEM marking and private-label packaging available?
What information is required for an accurate quotation?
Technical Downloads
Use the following references for product selection and starting cutting-data review.
Solid Carbide End Mill Catalog
Review related square-end, ball-nose, corner-radius and application-specific end mill series.
End Mill Speeds & Feeds Guide
Access reference starting parameters for application review and controlled machining trials.
Need a Size or Application Review?
Send the workpiece grade, hardness, required dimensions, machining operation and quantity for configuration and quotation 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.
