90° Solid Carbide Chamfer Mill for Spotting and Counterboring
This 90° solid carbide chamfer mill is designed for spotting, chamfering, countersinking and selected counterbore-style hole preparation on CNC machining centers. The precision-ground cutting profile supports clean edge preparation, controlled chamfer dimensions and stable positioning before drilling. Standard and application-specific configurations are available for steel, stainless steel and aluminum machining.
Product Configurations
90° Standard
2F / 3F by Model
Solid Carbide
Uncoated / TiAlN / AlTiN
Steel / Stainless Steel / Aluminum
Spotting / Chamfering / Countersinking / Recess Preparation
Consistent Quality
Consistent geometry across repeat orders.
Đơn hàng linh hoạt
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Tiêu chuẩn & Theo yêu cầu
Standard sizes and custom configurations.
90° Carbide Chamfer Mill Overview
This 90° solid carbide chamfer mill is designed for precision spotting, edge chamfering, countersinking and hole-preparation operations on CNC machining centers. The pointed 90° cutting profile can establish an accurate starting position before drilling while also producing controlled chamfers around drilled holes and machined edges. Micro-grain solid carbide construction provides rigidity and wear resistance for repeated production use. Reference configurations cover Ø1–Ø20 mm cutting diameters, with compact standard lengths and selected 100 mm and 150 mm long-reach options available for different machining setups.
90°
2F / 3F
Solid Carbide
Ø1–Ø20 mm
90° Multi-Purpose Cutting Configuration
90° Point Geometry
The symmetrical pointed profile supports accurate spotting before drilling and controlled 45° chamfers on each side of the included 90° angle.
Hole-Preparation Capability
One tool can be used for spotting, hole-edge chamfering and selected countersink or counterbore-style preparation, reducing unnecessary tool changes in suitable applications.
Size-Specific Flute Design
Small diameters use compact 2-flute configurations, while larger reference sizes use 3 flutes to provide additional cutting-edge support and stable chamfering performance.
Application-Specific Advantages
Controlled Chamfer Geometry
The fixed 90° included angle supports repeatable hole-edge and external-edge chamfering.
Accurate Spotting
The pointed cutting profile establishes a defined starting location before subsequent drilling operations.
Stable Cutting Engagement
Two- and three-flute configurations are matched to the reference diameter range and tool proportions.
Flexible Size Options
Cutting diameter, angle, shank and overall length can be reviewed for standard or non-standard applications.
Recommended Machining Operations
The 90° chamfer mill is intended primarily for hole preparation and edge-finishing operations. Final cutting conditions should be matched to the workpiece material, tool diameter, chamfer width, machine rigidity and holder runout.
RECOMMENDED
RECOMMENDED
RECOMMENDED
SUITABLE
Control axial depth carefully because chamfer diameter increases with cutting depth on a 90° profile. Use low runout and stable toolholding when spotting small holes or producing precision chamfers.
Workpiece Material Compatibility
| MATERIAL GROUP | APPLICATION | APPLICATION LEVEL |
|---|---|---|
| P Steel & Alloy Steel | Spotting, chamfering, countersinking and hole-edge preparation | Primary application |
| M Stainless Steel | Application-specific geometry and cutting-data review recommended | Suitable |
| N Aluminum & Non-Ferrous | Spotting, edge chamfering and countersinking with suitable sharp-edge configuration | Recommended configuration |
| H Hardened Steel | Carbide grade, coating and hardness range should be confirmed before production | Application review |
One edge preparation or coating should not automatically be applied to every material group. Confirm the primary workpiece material and hardness before selecting the final configuration.


Tool Nomenclature & Dimensions
Reference dimensions and standard configurations for the 90° solid carbide chamfer mill. Confirm the cutting diameter, included angle, shank diameter, flute count and overall length for the selected HY-155 model. All listed dimensions are in millimeters.
CD: Cutting Diameter A: Included Angle SD: Shank Diameter F: Flute Count TL: Total Length
Technical Configuration
| PARAMETER | REFERENCE CONFIGURATION |
|---|---|
| Product Series | HY-155 |
| Vật liệu dụng cụ | Micro-Grain Solid Carbide |
| Tool Type | Chamfer Mill / Spotting Tool |
| Primary Point Angle | 90° included angle |
| Optional Angles | 60° / 120° on selected sizes |
| Flute Count | 2 Flutes for selected small diameters / 3 Flutes for larger reference sizes |
| Cutting Diameter Range | Ø1–Ø20 mm |
| Overall Length Range | 50–150 mm reference configurations |
| Primary Operations | Spotting / Chamfering / Countersinking / Hole-Edge Preparation |
| Machine Type | CNC Machining Center / CNC Milling Machine |
Standard Size Matrix
Standard and extended-length HY-155 reference configurations. The table includes the available angle and flute combinations from the original product series; confirm the required 90° model before ordering.
| ITEM NO. | CD | ANGLE A | SHANK DIA. SD | FLUTES | TOTAL LENGTH TL |
|---|---|---|---|---|---|
| HY-155 | 1.0 | 90° | 4 | 2F | 50 |
| HY-155 | 1.2 | 90° | 4 | 2F | 50 |
| HY-155 | 1.5 | 90° | 4 | 2F | 50 |
| HY-155 | 2.0 | 90° | 4 | 2F | 50 |
| HY-155 | 2.5 | 90° | 4 | 2F | 50 |
| HY-155 | 3.0 | 60° / 90° / 120° | 4 | 3F | 50 |
| HY-155 | 4.0 | 60° / 90° / 120° | 4 | 3F | 50 |
| HY-155 | 5.0 | 60° / 90° / 120° | 5 | 3F | 50 |
| HY-155 | 6.0 | 60° / 90° / 120° | 6 | 3F | 50 |
| HY-155 | 8.0 | 60° / 90° / 120° | 8 | 3F | 60 |
| HY-155 | 10.0 | 60° / 90° / 120° | 10 | 3F | 75 |
| HY-155 | 12.0 | 60° / 90° / 120° | 12 | 3F | 75 |
| HY-155 | 14.0 | 90° | 14 | 3F | 80 |
| HY-155 | 16.0 | 90° | 16 | 3F | 80 |
| HY-155 | 20.0 | 90° | 20 | 3F | 100 |
| HY-155 | 4.0 | 90° | 4 | 3F | 100 |
| HY-155 | 6.0 | 90° | 6 | 3F | 100 |
| HY-155 | 8.0 | 90° | 8 | 3F | 100 |
| HY-155 | 10.0 | 90° | 10 | 3F | 100 |
| HY-155 | 12.0 | 90° | 12 | 3F | 100 |
| HY-155 | 8.0 | 90° | 8 | 3F | 150 |
| HY-155 | 10.0 | 90° | 10 | 3F | 150 |
| HY-155 | 12.0 | 90° | 12 | 3F | 150 |
Chamfering & Spotting Application Guidance
- Chamfer Depth: Control axial position carefully because a small depth change directly changes the finished chamfer diameter.
- Spotting: Use a stable, low-runout setup to maintain accurate hole location before the following drilling operation.
- Tool Overhang: Use the shortest practical extension whenever possible, especially with long 100 mm or 150 mm configurations.
- Toolholding: Use a clean precision collet or holder and verify radial runout before machining small-diameter features.
- Material Selection: Match carbide grade, edge preparation and coating to the workpiece material and hardness rather than using one configuration for all materials.
90° Carbide Chamfer Mill Customization
Cutting diameter, included angle, flute count, shank diameter, overall length, cutting-edge geometry and coating can be configured for spotting, chamfering, countersinking, hole-edge deburring and selected counterbore-style preparation. The HY-155 reference series covers Ø1–Ø20 mm cutting diameters, with 90° as the primary configuration and selected 60° and 120° angle options. Standard and extended-length versions can be reviewed according to the workpiece material, hole geometry, required chamfer size, machining depth and machine setup.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Product Series | HY-155 standard and application-specific chamfer mill configurations. |
| Cutting Diameter | Reference cutting diameters range from Ø1 to Ø20 mm. Selected intermediate and non-standard diameters can be reviewed according to the hole feature, chamfer requirement or tool drawing. |
| Included Angle | 90° is the primary configuration for general spotting, chamfering and countersinking. Selected Ø3–Ø12 mm sizes can also be reviewed with 60° or 120° included angles. |
| Flute Configuration | Selected small-diameter models use a 2-flute design, while larger reference sizes use 3 flutes. Flute count can be matched to tool diameter, chip space, material and required cutting stability. |
| Spotting Geometry | Point geometry and cutting-edge preparation can be reviewed for accurate hole positioning before drilling. The spotting angle should be matched to the following drill geometry and hole-accuracy requirement. |
| Chamfer Geometry | Chamfer width and finished diameter are controlled by the included angle and programmed axial depth. Custom geometry can be reviewed where a defined edge break or countersink diameter is required. |
| Counterbore-Style Features | Selected recess and hole-preparation geometries can be reviewed according to the component drawing. For true flat-bottom counterbores, the required bottom profile and end-cutting geometry must be confirmed separately. |
| Shank Diameter | Reference shank diameters range from Ø4 to Ø20 mm according to cutting diameter. Standard or drawing-defined shank sizes can be reviewed for holder compatibility. |
| Overall Length | Reference overall lengths include 50, 60, 75, 80, 100 and 150 mm configurations. Extended-length versions are available for selected diameters where additional reach is required. |
| Long-Reach Configuration | Selected Ø4–Ø12 mm models can be supplied in extended 100 mm configurations, while Ø8, Ø10 and Ø12 mm reference sizes are available up to 150 mm overall length. |
| Cutting-Edge Preparation | Rake geometry, relief, edge preparation and flute finishing can be reviewed according to the workpiece material, cutting load, chamfer width and spotting requirement. |
| Coating Selection | Coating can be selected according to the workpiece material and hardness. Steel and hardened-steel applications can use suitable wear-resistant coated configurations, while aluminum and other non-ferrous materials may require sharper or lower-adhesion surface options. |
| Machining Application | Geometry can be reviewed for spotting, 90° chamfering, countersinking, hole-edge deburring, external-edge preparation and selected hole-recess operations. |
| Dimensional Requirements | Drawing-defined requirements can be reviewed for cutting diameter, included angle, shank diameter, overall length, point geometry, chamfer size and tool runout. |
Dịch vụ OEM và nhãn hiệu riêng
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 |
| Radial Runout | 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 90° Solid Carbide Chamfer Mill for spotting, chamfering, countersinking, hole-edge preparation and selected counterbore-style machining.
What operations is this 90° chamfer mill designed for?
Can this chamfer mill be used for spotting before drilling?
Can this tool be used for counterboring?
How is the final chamfer diameter controlled?
Why are both 2-flute and 3-flute versions available?
What should be considered when using long-reach versions?
Ordering & Customization FAQs
Information for distributors, tooling suppliers and industrial customers requesting standard or application-specific HY chamfer mill configurations.
What standard sizes are available?
Are angles other than 90° available?
Can non-standard dimensions or cutting geometry be customized?
Can coating be selected according to the workpiece material?
Are OEM marking and private-label packaging available?
Thời gian thực hiện thông thường là bao lâu?
What information is required for an accurate quotation?
Technical Downloads
Use the following references for carbide tool selection and starting machining-data review.
Solid Carbide End Mill Catalog
Review related chamfer mills, spotting tools, square-end, ball-nose, corner-radius and application-specific carbide cutter series.
End Mill Speeds & Feeds Guide
Access reference starting parameters for application review and controlled machining trials.
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.



















