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GME-US260 Stainless End Mill Description
The GME260 end mill is designed to address the challenges of processing stainless steel. It is equipped with a high-rigidity cutting edge and a multi-layer heat-resistant coating, which significantly extends the tool life and inhibits the formation of built-up edge. The unique spiral groove design achieves smooth cutting and fast chip evacuation, which is suitable for rough and fine processing of stainless steel. It provides a variety of specifications to choose from, compatible with CNC machine tools and traditional equipment, taking into account both efficient cutting and economy, and meeting the stringent needs of industries such as aerospace, medical equipment, and energy equipment.

GME-US260 Stainless End Mill features
1. For small parts processing in the 3C industry, suitable for rough processing and finishing of stainless steel (<380HB).
2. Adopt excellent tool matrix and coating technology to improve rough processing resistance and finishing wear resistance, and long tool life.
3. Suitable for high-speed fast feed processing, face milling, side milling, shallow slot milling (ap≤1D).
4. Oil cooling and water cooling are recommended.
GME-US260 Stainless End Mill Processing Materials
| Workpiece Material | |||||
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| 1234 | 5 | 123 | 123 | 123 | 4 |
| Carbon steel, alloy steel (<35HRC) |
Alloy steel (below 48HRC) | Stainless steel | Cast iron | High temperature alloy | Titanium alloy |
| ○ | ○ | ◎ | ○ | ○ | ○ |
◎ Best for ○ Suitable
Application of GME-US260 Stainless End Mill
The GME-US260 stainless steel end mill is ideal for industries such as aerospace, automotive, and mold making, where high-precision machining of stainless steel and other high-strength materials is crucial. It offers high stability, efficient chip removal, and superior surface finish quality in both roughing and finishing stages.
GME-US260 Application Case (Heat Sink)

| Parameter | Value / Description |
|---|---|
| Tool Model | GME-US260-S4A-12030 |
| Tool Specifications | D12×30×75×d12 (Diameter×Cutting Length×Overall Length×Shank Diameter) |
| Workpiece Material | CF-8M (18-22 HRC) – Stainless Steel Casting |
| Cutting Speed (Vc) | 56 m/min |
| Feed per Tooth (fz) | 0.05 mm/tooth |
| Cutting Depth | ap=0.5mm (axial), ae=6mm (radial) |
| Coolant Method | Emulsion Coolant |
| Machining Type | Face Milling |
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