90° Carbide Chamfer Mill / Center Drill - 2-Flute TiSiN
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Select a product variant:
Individual variants may differ in price
Product code: CCBD-14317
Product description
Solid carbide • two cutting edges • cylindrical shank
A solid carbide tool for chamfering edges and hole entrances and making centre spots. The cutting end has two flutes and a 90° included point angle. The cylindrical shank is held in a suitable toolholder. This TiSiN-coated version is intended for metal machining on CNC milling machines and machining centres.
Applications and workpiece materials
Use the tool to prepare and finish workpiece edges and to spot holes. Select a cutting diameter suited to the operation when machining external edges or hole entrances.
| Material / operation | Application |
|---|---|
| Steel | Chamfering and spotting in steel; the stated upper workpiece hardness is 55 HRC. |
| Stainless steel | Edge machining and spotting with cutting conditions selected for the grade and setup. |
| Cast iron | Chamfering edges and hole entrances. |
| Spotting | Making a centre spot with a 90° included point angle. |
The 55 HRC rating refers to the steel being machined, not to the hardness of the carbide tool itself. Select cutting conditions to suit the workpiece material, tool diameter, overhang and machine rigidity.
Construction and technical specifications
| Parameter | Specification |
|---|---|
| Tool type | Solid chamfer mill / spotting tool |
| Material | VHM — fine-grain solid carbide |
| Carbide grain size | 0.6 µm |
| Number of cutting edges | 2 |
| Included point angle | 90° |
| Coating | TiSiN |
| Shank | Cylindrical |
| Cutting diameter, shank diameter and overall length | Depend on the selected size; dimensions are shown in the variant name and its image. |
The two flutes provide space for chips to leave the cutting area. The cutting edges receive a passivation treatment. The tool has a one-piece carbide construction without replaceable inserts.
How to read the variant size
The size designation gives the cutting diameter, shank diameter D, overall length L and included point angle, in that order. Linear dimensions are in millimetres. Example: 4x4Dx50Lx90°.
| Part of the designation | Meaning in this example |
|---|---|
| First number: 4 | Cutting diameter Ø4 mm |
| 4D | Shank diameter Ø4 mm |
| 50L | Overall length 50 mm |
| 90° | Included point angle |
L is the overall tool length, not the cutting-edge length. Match the toolholder to the shank diameter marked D. Choose an available size in the product selector; selecting a variant displays the corresponding tool image.
Toolholding and preparation
- Check runout before cutting. If it exceeds 0.01 mm, correct the setup before machining.
- Keep the tool overhang as short as possible. Choose a tool length that provides access to the edge being machined.
- Reduce the cutting load with longer overhang. Adjust spindle speed, feed or the amount of material removed accordingly.
- Use a suitable machine. The tool is intended for CNC milling machines, machining centres and machines with suitable spindle speed. It is not intended for handheld drills or low-speed bench drills.
Chip evacuation and cutting conditions
Steel can be machined without coolant when cutting conditions are matched to the material and tool. An air blast or coolant mist is recommended to assist machining in steel. Keep chips clear of the cutting area.
If unusual vibration or noise occurs, reduce spindle speed and the amount of material removed. Check toolholding and overhang before continuing. Select cutting conditions separately for a longer tool to suit the actual setup.
Frequently asked questions
Can this tool be used for spotting?
Yes. It can be used for spotting as well as chamfering and has a 90° included point angle.
Which dimension determines the toolholder size?
The number next to D gives the cylindrical shank diameter. The value next to L is the overall tool length.
Can a longer tool use the same cutting conditions?
Cutting conditions must suit the overhang. With longer overhang, reduce spindle speed, feed or the amount of material removed as appropriate.
Is the tool suitable for a handheld drill?
No. It is intended for use on a machine with a suitable spindle and toolholding setup.
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