- Thick Negative Rake Structure Offers Superior Rigidity
CNMG adopts negative rake design with thick substrate. The robust insert body resists heavy cutting impact, greatly lowering edge chipping risks during interrupted roughing and deep depth of cut. It handles large material removal that positive inserts cannot sustain.
- Multi-Corner Design Cuts Procurement CostEach CNMG insert has 8 usable cutting corners. Compared with single or 4-corner inserts, it extends total service life per piece, reduces frequent insert replacement and lowers overall tool consumption cost for mass roughing production.
- Built-In Chip Breakers Optimize Heavy Stock Removal
Custom chip breaker grooves on CNMG geometries break long continuous chips into small fragments. It avoids chip winding on workpieces or tool holders even under high feed roughing, supporting stable long-cycle machining.
- Wide Compatibility With All Roughing Workpieces
Grade options cover carbon steel, stainless steel, cast iron and pre-hardened mold steel. Special wear-resistant coating grades maintain consistent performance under continuous high-temperature rough cutting without rapid crater wear.
- Strong Anti-Vibration Performance For Long Overhang Machining
The thick carbide base improves overall rigidity of the tool assembly. When turning long shafts with big tool overhang, CNMG inserts effectively suppress chatter vibration and deliver steady roughing surface quality.
For high-efficiency heavy roughing of metal workpieces, CNMG carbide inserts balance toughness, cost and machining stability perfectly. We supply full series CNMG inserts with multiple coating and carbide grades in stock, plus custom laser marking service. Contact our sales team for free test samples and matched roughing cutting parameters.
