SN-4ZM Inverted Cone Shape Double Cut Burr 12mm Head for Undercut and Back Chamfering
The SN-4ZM is a carbide rotary burr with an inverted cone shape and double‑cut design. It features a 12mm head diameter, 13mm cutting length, and a 58mm overall shank, suitable for undercutting, back chamfering, and reverse‑angle finishing in recessed or hard‑to‑reach areas.
| Technical Parameters | ||||||
| Model | Cut dia (D1) | Cut length (D2) | Shank (L1) | Overall (L2) | Type | Cut |
| SN-4ZM DC | 12 | 13 | 6 | 58 | Silver braze | Double |
The inverted cone profile allows access to reverse slopes and internal undercuts that standard burrs cannot reach. The double‑cut structure ensures efficient material removal while maintaining surface finish. It works well on stainless steel, carbon steel, and aluminum alloys. Made from wear‑resistant carbide, the tool offers stable performance during continuous use.
Compatible with standard electric and pneumatic tools, it is easy to operate and maintain. Commonly used in mold repair, hole back‑finishing, and detailed part processing.

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.
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.