Straight flute step drills are engineered for precise multi-diameter hole machining where dimensional stability, positional accuracy, and controlled cutting behavior are critical. This custom CNC tool design combines straight flute geometry with step drilling functionality to deliver reliable performance in short-chipping and brittle materials, as well as applications requiring stable step transitions and consistent hole quality.
The Straight Flute Step Drill – Custom CNC Tool Design is developed for CNC machining applications that require multiple hole diameters to be produced in a single operation. The straight flute geometry minimizes axial pulling forces and tool deflection, ensuring accurate step positioning and improved dimensional control.
Compared with spiral flute step drills, the straight flute design provides enhanced stability and predictable cutting behavior, particularly in cast materials, non-ferrous alloys, and thin-wall components. Each tool is custom-designed based on customer drawings or application requirements.
Multi-diameter hole machining
Cast iron components
High-silicon aluminum alloys
Brass and bronze materials
Powder metallurgy parts
Thin-wall and fragile workpieces
Precision CNC drilling operations
Straight flute geometry for stable cutting performance
Step drill design for multi-diameter hole production
Reduced axial and radial cutting forces
High positional accuracy at step transitions
Custom-engineered geometry for CNC machining
Optimized for short-chipping materials
Improved dimensional accuracy and repeatability
Reduced risk of tool grabbing and workpiece damage
Stable step positioning and smooth diameter transitions
Enhanced tool life under controlled cutting conditions
Lower machining cycle time by combining operations
Flexible customization for specific applications
| Parameter | Specification |
|---|---|
| Tool Type | Straight Flute Step Drill |
| Cutting Tool Category | Custom CNC Tool |
| Flute Geometry | Straight Flute (0° Helix) |
| Step Configuration | Customizable |
| Cutting Diameter Range | As per customer drawing |
| Step Length | Customizable |
| Overall Length | Customizable |
| Shank Type | Cylindrical or Custom |
| Coolant Supply | External or Internal (Optional) |
| Cutting Material | Solid Carbide, Coated Solid Carbide, Brazed Carbide, Brazed PCD, Brazed CBN, Solid HSS, Brazed HSS |
| Coating | Optional, application-dependent |
| Machining Method | CNC Machining |
Custom step diameter and length configuration
Solid carbide straight flute step drill design
Brazed carbide straight flute step drill configuration
Brazed PCD straight flute step drill for non-ferrous materials
Brazed CBN straight flute step drill for cast iron applications
Application-specific point and cutting edge geometry
Internal coolant hole design
Custom shank dimensions and tolerances
Drawing-based or sample-based customization
For technical support or a quotation, please contact:
[email protected]
Related machining solutions and tools commonly used for straight-flute stepped drilling, short-hole multi-diameter machining, and high positional accuracy hole generation include:
Step Drill – Solid Carbide Custom CNC Design
2-Flute PCD Step Reamer Head with Entrance Chamfer
PCD Flat-Bottom Drill 2×60° + 1×45° Ø6 mm
PCD Countersink
Multi-Stage PCD Combination Tool
