2-Flute Small-Diameter PCD Step Reamer Head with Chamfer
Overview
The 2-Flute Small-Diameter PCD Step Reamer Head with Entrance Chamfer is a precision modular tool designed for finishing multi-step bores where compact diameters are required. By combining step reaming and entrance chamfering in a single tool, it reduces tool changes, shortens cycle times, and improves machining efficiency. With PCD (Polycrystalline Diamond) cutting edges, it provides outstanding wear resistance, mirror-like surface finishes, and extended tool life when machining aluminum alloys, non-ferrous metals, composites, and engineered plastics.
Applications
Small-diameter multi-step bore finishing with integrated chamfering
Automotive fuel system and injector components requiring high precision
Aerospace structures and hydraulic manifolds with compact bore designs
High-accuracy machining of aluminum housings and composite parts
Modular tool systems for high-volume CNC production
Key Features
2-flute PCD cutting edges – Stable geometry for reliable cutting in small diameters
Step bore + entrance chamfer – Combines multiple operations into one tool
Head-only modular design – Replaceable cutting head reduces tooling cost
Optimized for compact diameters – Ideal where rigidity and accuracy are critical
High concentricity – Ensures alignment between steps and chamfer with IT6 tolerance
Benefits
Reduces cycle time by integrating step reaming and chamfering in one pass
Cost-effective modular tooling – Replace only the head, not the entire tool system
Extended tool life thanks to diamond-grade PCD cutting edges
Produces mirror-like surface finishes (Ra ≤ 0.4 µm) and micron-level accuracy
Improves process reliability in automotive, aerospace, and hydraulic applications
Technical Specifications
| Parameter | Specification (example) |
|---|---|
| Tool type | PCD Step Reamer Head (small-diameter) |
| Flutes | 2 |
| Diameter range | Ø2.5 – Ø8.0 mm (customizable to Ø2.0 – Ø12 mm) |
| Step count | 2 or 3 (per drawing) |
| Chamfer angle | 45° / 60° / 90° (custom options available) |
| Mounting | Modular arbor system |
| Cutting material | PCD (Polycrystalline Diamond) |
| Coolant supply | Optional through-tool coolant |
| Tolerance | ≤ IT6 (custom tighter tolerances available) |
Options & Customization
Diameter range: Ø2.0 mm – Ø12 mm available
Step count: 2, 3, or 4-step configurations per customer drawing
Chamfer options: 45°, 60°, 90°, 100°, or custom geometry
Special designs for tapered bores, angled entrances, or compound profiles
Compatible with modular toolholding systems (Weldon, HSK, BT, ISO-standard)
Related Tools
2-Flute PCD Step Reamer Head with Entrance Chamfer – Model PCD-SRH-2F-ST2-CH45-V1
Large-Diameter PCD Step Reamer with Dual Chamfers (90° & 45°) | Aoshiji® Custom Tool
6-Flute Adjustable PCD Reamer with Shank – High-Precision, Wear-Resistant Reaming
Contact
For bore drawings, tolerance requirements, or custom tool specifications, please contact:
[email protected]
+86 15509842889
Aoshiji® Custom Tool – High-Precision PCD and Custom CNC Tooling Solutions
