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High Precision Carbide Push Broach & Pull Reamer for Inner Hole Finishing
Ideal for applications requiring tight tolerances of ±0.001 mm and mirror-like surface finishes (Ra 0.4–0.6 μm)
Product Overview
Our ultra-precise carbide push broaches and pull reamers are designed for fine machining of pre-drilled or bored inner holes. Made from premium tungsten carbide, these tools provide high stability, wear resistance, and cutting accuracy. Ideal for applications requiring tight tolerances of ±0.001 mm and mirror-like surface finishes (Ra 0.4–0.6 μm), these tools are widely used in automotive, aerospace, hydraulic systems, mold making, and precision machinery.
Key Features
Extreme Precision: Dimensional accuracy up to ±0.001 mm
Superior Surface Finish: Achieves Ra 0.4–0.6 μm for polished bore walls
Tungsten Carbide Construction: Excellent hardness and durability
Micro-Cutting Performance: Minimal cutting force with low deformation
Customizable Design: Tool size, blade geometry, and shank type tailored to your application
Applications
Final bore finishing of hydraulic valve bodies, engine blocks, gear housings, cylinder liners, and more
Suitable for steel, stainless steel, aluminum alloys, and other hard-to-machine materials
Used in CNC machining centers, boring machines, horizontal/vertical broaching units, and manual fixtures
Specifications (Customizable)
| Specification | Value |
|---|---|
| Material | Tungsten Carbide (Cemented Carbide) |
| Tool Type | Push Broach / Pull Reamer |
| Hole Diameter | 2 mm – 50 mm |
| Tolerance | ±0.001 mm |
| Surface Finish | Ra 0.4–0.6 μm |
| Application Material | Steel, Aluminum, Stainless Steel, etc. |
Working Principle & Usage Instructions
Push Broach – How It Works
The push broach is inserted into the bore from one end and pushed forward manually or with machine assistance.
As the broach advances, multiple cutting edges remove a minimal amount of material from the hole wall in a single pass.
The tool is often used with a floating reamer holder to self-align with the bore axis.
Suitable for short or medium-depth through-holes, typically on CNC machines or vertical machining centers.
Pull Reamer – How It Works
The pull reamer enters from one end of the hole and is pulled out from the opposite end, usually by a broaching machine or specialized fixture.
The cutting blades are arranged in progressive steps (spiral or straight), each removing a tiny layer of material.
The process provides exceptional straightness and roundness, making it ideal for deep bores or high-volume production.
Commonly used in hydraulic manifolds, automotive parts, and aerospace components requiring extreme precision.
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