| Parameter | Details |
|---|---|
| Diameter Range | φ5 mm ~ φ100 mm (customizable for larger/smaller sizes) |
| Depth-to-Diameter Ratio | Up to 400:1 (standard: 20:1 ~ 250:1) |
| Tool Material | Cemented carbide (WC-Co), coated with AlCrN/TiAlN (wear-resistant) |
| Shank Type | Straight shank, Morse taper, or custom (compatible with CNC/ gun drill machines) |
| Cooling Mode | Internal coolant delivery (through-tool) + external chip evacuation |
| Tolerance | Hole diameter: IT6 ~ IT8; Straightness: 0.16 ~ 0.33 mm/1000 mm |
| Surface Roughness | Ra 0.1 ~ Ra 3.2 μm (achievable on finished holes) |
| Cutting Speed (Vc) | 30 ~ 150 m/min (varies by workpiece material) |
| Feed Rate (f) | 0.04 ~ 0.16 mm/rev (optimized for chip control) |
| Applicable Materials | Carbon steel, alloy steel, stainless steel, cast iron, aluminum, etc. |
We own high precision grading machine to control geometry dimensions and apply ultra fine grain size substrate coated with high performance coatings to guarantee the lifetime of our products, which can satisfy every working condition. If any quality problems on our side occurred in this period, we will take on the shipping cost and replacement.
Yes, usually we provide free samples for testing under the condition of freight paid by customer.
We will indicate the MOQ for each item in the quotation sheet. We accept the sample and trial order. If the quantity of single item can't reach the MOQ, the price should be sample price.
It depends on the inventory availability. If items needed are in stock, the delivery time would be within 8 work days, but if not the delivery time would be around 20 work days.
Yes, we can. We can produce both standard end mills and special tools. We can make them according to your drawings and samples.
Yes, we will send working schedule of your order each week. We will inspect and test all merchandise in case of damaging and missing parts before shipment. The detailed inspection pictures of the order will be sent to you for your confirmation before delivery.