The SK-5M carbide rotary burr features a Countersink 90° shape and a double‑cut design, developed specifically for vertical countersinking, right‑angle chamfering, and hole‑edge finishing. Its 90° tapered structure accurately matches standard vertical countersink requirements, while the double‑cut pattern provides efficient material removal and produces a smooth, clean chamfer surface.
| Technical Parameters |
| Model |
Cut dia (D1) |
Cut length (D2) |
Shank (L1) |
Overall (L2) |
Type |
Cut |
| SK-5M DC |
12.7 |
6.3 |
6 |
54 |
Silver braze |
Double |
| Care Selections-carbide grades |
Cobalt(%) |
Hardness(HRA) |
T.R.S(N/mm2) |
| Carbide Grades |
YG7 |
7 |
90.5 |
3000 |
| YG8 |
8 |
89.5 |
3400 |
| YG6X |
6 |
91.7 |
3400 |
| YG10X |
10 |
90-91 |
3000 |
This tool is suitable for creating precise right‑angle countersinks, edge deburring, and hole‑edge finishing on materials such as carbon steel, alloy steel, and stainless steel. The double‑cut design balances machining speed with surface quality, maintaining consistent cutting performance during continuous use.
Compatible with common electric and pneumatic tools, it is easy to operate and maintain. Widely used in machining assembly holes, mold right‑angle chamfering, weld‑groove pre‑processing, and standard vertical‑countersink production, this is a purpose‑built and reliable rotary burr designed for vertical countersinking applications.

Caburtech offers a wide selection of carbide burr shapes in Single and Double Cut styles, including Cylinder, Round nose cylinder, Ball, Oval, Tree, Flame, Cone, Countersink and Inverted Cone. Each shape is designed for grinding, deburring, chamfering, and finishing on steels under 60 HRC, stainless steels, cast iron and etc.
FAQ
1.How to Use:
This product belongs to the commonly used alloy consumables, and is designed to be used with high-speed electric grinders or pneumatic tools.
2.OEM:
We offer OEM services to cater to specific customer requirements.
3.MOQ:
The usual minimum order quantity is 100 pcs per model.
However, this can be adjusted based on your specific requirements. Please consult your sales representative for further details.
4.Lead Time:
The lead time for regular orders is approximately one month, excluding samples.
5.Port:
Shanghai/ Guangzhou/ Shenzhen/ Ningbo/ Yiwu/ Chengdu.