UF(600) 4 flute long neck corner radius end mill with 0.6μm carbide and AlCrN PVD coating for deep grooves, recessed features and stable machining of stainless steel, titanium and hardened steel up to 50 HRC.
The UF(600) 4 flute long neck corner radius end mill is designed for machining deep and restricted features where both extended reach and a reinforced cutting corner are required.
Its long neck configuration provides additional clearance for recessed areas, while the corner radius helps support the cutting edge when machining pockets, shoulders and profiles. The tool uses a 0.6μm fine-grain carbide substrate with AlCrN PVD coating for applications involving stainless steel, titanium alloys and hardened steel up to 50 HRC.
The UF(600) is suitable for medium-speed and high-speed machining, dry cutting and coolant-assisted operations.
Product Highlights
Long Neck + Corner Radius: Two Functions in One Tool
The main advantage of this configuration is the combination of reach and corner strength.
Extended Access
The long neck creates additional clearance behind the cutting section, allowing the tool to reach deeper features without requiring the full tool body to enter the work area.
Reinforced Cutting Corner
The corner radius provides a stronger transition between the end and side cutting edges than a sharp square corner, making the geometry suitable for applications where the tool corner experiences higher cutting loads.
Better Suitability for Deep Profiles
Combining extended reach with a radius corner makes the tool suitable for deeper profiles, recessed pockets and other features where both access and corner durability matter.
Reduced Toolholder Interference
The long neck section can provide additional clearance when machining features surrounded by raised walls or narrow shoulders.
Long-neck corner-radius tools are commonly positioned for deep and restricted machining, with manufacturers also emphasizing corner accuracy, chatter control and hardened-material applications.
Application Focus
Deep Pocket Milling
Suitable for recessed pockets where additional reach is needed and the cutting corner is subject to repeated engagement.
Deep Groove Machining
The long neck provides access to deeper grooves, while the corner radius supports the cutting edge during side-wall and bottom transitions.
Shoulder Milling
The radius corner is suited to shoulder applications where a sharp square corner may be more vulnerable to localized loading.
Profile Milling
Suitable for internal and external profiles requiring extended tool access and a controlled corner geometry.
Restricted Machining Areas
Useful where surrounding walls, steps or workpiece geometry limit access to conventional end mills.
Corner Radius Selection
The corner radius is an important specification for matching the tool to the workpiece geometry.
Match the Part Geometry
Select a radius that fits the required internal corner, profile transition or shoulder geometry.
Consider Edge Loading
A larger radius provides more material behind the cutting corner and can be useful where cutting forces are concentrated at the tool tip.
Balance Radius and Accessibility
The selected radius should provide the required edge strength without interfering with the part geometry.
Check the Effective Length
For long-neck tools, the effective length and corner radius should be considered together rather than selecting each dimension independently.
Material Applications
| Workpiece Material | Application Focus |
| Stainless Steel | Deep pockets, profiles and shoulder milling |
| Titanium Alloy | Restricted and demanding milling |
| Hardened Steel ≤50 HRC | Deep profiles and controlled finishing |
| Other Difficult-to-Machine Materials | Application dependent |
Actual performance depends on material grade, hardness, tool diameter, corner radius, effective length, machine rigidity, tool overhang and cutting conditions.
AlCrN Coating for Demanding Milling
The UF(600) uses AlCrN PVD coating to support applications where heat and material adhesion can affect cutting performance.
Thermal Resistance
The coating is designed for high-temperature oxidation resistance under demanding cutting conditions.
Anti-Adhesion Performance
The AlCrN coating helps reduce material adhesion during stainless steel machining, where built-up edge can interfere with stable cutting.
Flexible Cutting Conditions
The tool can be used for medium-speed, high-speed, dry and coolant-assisted machining depending on the workpiece and cutting setup.
The supplied product data indicates approximately 1000°C high-temperature performance for the coating system. This should not be interpreted as the actual cutting temperature at the tool edge.
0.6μm Fine-Grain Carbide
The 0.6μm fine-grain carbide substrate provides the hardness and wear resistance required for demanding long-neck corner-radius applications.
Its role is particularly important when the tool combines:
Technical Specifications
| Parameter | Specification |
| Series | UF(600) |
| Tool Type | 4 Flute Long Neck Corner Radius End Mill |
| Flute Count | 4 |
| End Configuration | Corner Radius |
| Tool Design | Long Neck |
| Substrate | 0.6μm Fine-Grain Carbide |
| Coating | AlCrN PVD |
| Hardened Steel Capability | Up to 50 HRC |
| Cutting Modes | Medium-Speed / High-Speed / Dry / Coolant-Assisted |
| Recommended Materials | Stainless Steel, Titanium Alloy, Hardened Steel |
Critical Dimensions
For this tool configuration, the following dimensions should be evaluated together:
Long-neck corner-radius products in the market likewise treat effective length and corner radius as important selection dimensions, particularly for deep machining and hardened-material applications.
Selecting the Right Configuration
Determine the actual feature depth before selecting the effective length.
Choose the radius according to the part geometry and desired corner transition.
Use a diameter that fits the feature while providing sufficient tool strength.
Make sure the neck provides adequate clearance around surrounding walls and shoulders.
Use the shortest practical tool extension to limit vibration and deflection during deep machining.
Cutting Conditions
The combination of long reach and corner-radius geometry makes tool setup particularly important.
Recommended cutting data can include:
Parameter selection should consider:
Tool Diameter + Corner Radius + Effective Length + Material + Machining Depth
For deep machining, reducing unnecessary radial engagement and tool overhang can help maintain cutting stability.
Customization
Custom configurations can be considered where standard diameter, radius or reach combinations do not match the machining requirement.
Custom Options
Frequently Asked Questions
What is a 4 flute long neck corner radius end mill used for?
It is designed for deep grooves, recessed pockets, profiles, shoulders and other restricted features where extended reach and a reinforced corner are both beneficial.
What is the advantage of combining a long neck with a corner radius?
The long neck provides additional reach and clearance, while the corner radius strengthens the cutting corner for demanding pocket, shoulder and profile operations.
Can the UF(600) machine stainless steel?
Yes. Stainless steel is one of the main application materials, and the AlCrN coating helps control material adhesion during machining.
Can it machine hardened steel?
Yes. The UF(600) is suitable for hardened steel applications up to 50 HRC under appropriate cutting conditions.
How do I choose the corner radius and effective length?
Select the radius according to the required part geometry and the effective length according to the actual machining depth. Avoid unnecessary tool extension to maintain rigidity.
