MZT30
Hardened steel, heat- and abrasion-resistant steel, and high-manganese steel
Roughing / semi-finishing
HSS rolls, ball screws and wind-power bearings
CBN Inserts / Models / CNGA
Family illustration. Confirm construction, cutting edges and drawing for the selected specification.
HUAMIN TOOLS / CBN TURNING INSERTS
CNGA CBN Inserts
80° rhombic insert family for grade-dependent ferrous machining. Compare construction variants and reference dimensions before requesting a quotation.
80° rhombicBuild your enquiry
Grade availability and variant compatibility require confirmation.
Request a Quote Ask an EngineerCompare CNGA specifications.
| ISO model | Construction / variant | L | IC | S | d | r | Enquiry |
|---|---|---|---|---|---|---|---|
| CNGA120404 | Solid CBN · CNGA | 12.9 | 12.7 | 4.76 | 5.16 | 0.4 | |
| CNGA120408 | Solid CBN · CNGA | 12.9 | 12.7 | 4.76 | 5.16 | 0.8 | |
| CNGA120412 | Solid CBN · CNGA | 12.9 | 12.7 | 4.76 | 5.16 | 1.2 | |
| CNGA120416 | Solid CBN · CNGA | 12.9 | 12.7 | 4.76 | 5.16 | 1.6 | |
| CNGA120404-4S | Brazed PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 0.4 | |
| CNGA120408-4S | Brazed PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 0.8 | |
| CNGA120412-4S | Brazed PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 1.2 | |
| CNGA120416-4S | Brazed PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 1.6 | |
| CNGA160404-4S | Brazed PCBN · CNGA - 4 edges | 16.1 | 15.875 | 4.76 | 6.35 | 0.4 | |
| CNGA160408-4S | Brazed PCBN · CNGA - 4 edges | 16.1 | 15.875 | 4.76 | 6.35 | 0.8 | |
| CNGA160412-4S | Brazed PCBN · CNGA - 4 edges | 16.1 | 15.875 | 4.76 | 6.35 | 1.2 | |
| CNGA120404-2S | PCBN · CNGA - 2 edges | 12.9 | 12.7 | 4.76 | 5.16 | 0.4 | |
| CNGA120408-2S | PCBN · CNGA - 2 edges | 12.9 | 12.7 | 4.76 | 5.16 | 0.8 | |
| CNGA120412-2S | PCBN · CNGA - 2 edges | 12.9 | 12.7 | 4.76 | 5.16 | 1.2 | |
| CNGA120416-2S | PCBN · CNGA - 2 edges | 12.9 | 12.7 | 4.76 | 5.16 | 1.6 | |
| CNGA120404-4S | PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 0.4 | |
| CNGA120408-4S | PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 0.8 | |
| CNGA120412-4S | PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 1.2 | |
| CNGA120416-4S | PCBN · CNGA - 4 edges | 12.9 | 12.7 | 4.76 | 5.16 | 1.6 |
Reference dimensions in mm. IC: inscribed circle; S: thickness; d: hole diameter; r: corner radius. — means not specified in that source table. Variants are kept separate; identical ISO codes do not imply identical construction or edge count. Confirm the final drawing, grade and stock before ordering.
CBN grade application references.
These catalog grade options require confirmation for the selected construction, size and cutting edge.
MZT40
Hardened steel
Finishing
Wind-power bearings
MZT50
Gray cast iron
Roughing / finishing
Brake discs, cast-iron engines, gearboxes and cylinder liners
MTH100
Hardened steel
Semi-finishing / finishing
Bearings, gears, gear shafts and hardened molds
MTH200
Hardened steel and other difficult-to-machine materials
Semi-finishing / finishing
Hardened-steel gears and molds
MTH300
Gray cast iron
Semi-finishing / finishing
Brake discs, cast-iron engines and gearboxes
MTH400
Gray cast iron and iron-based alloys
Semi-finishing / finishing
Brake discs, brake drums, cast-iron engines and gearboxes
MFH101
Hardened steel
Finishing
Gears, gear shafts and bearings
MFH201
Hardened steel and high-strength cast iron
Finishing
Bearings, gears, gear shafts and high-hardness components
MFH301
Hardened steel
Finishing
Bearings, gears, gear shafts and molds
Match the grade to your workpiece.
Hardened steel
Send material, hardness, allowance and finish target. Distinguish continuous finishing from interrupted cutting.
Cast iron
Identify gray, chilled or high-alloy cast iron. Include scale, interruption and current wear pattern.
HSS & powder metallurgy
Confirm composition, hardness, porosity and cutting stability before choosing construction and edge preparation.
Questions about CNGA CBN inserts
What are CBN inserts?
CBN inserts use cubic boron nitride cutting material for selected hard and abrasive ferrous workpieces. Construction, binder, grade and edge preparation affect suitability.
How are CBN inserts used?
Typical applications include hard turning, cast iron machining and selected high-speed steel or powder-metallurgy operations. Review the actual material, hardness and cutting conditions first.
What materials are CBN inserts used for?
The range covers hardened steel, gray and alloy cast irons, selected high-speed steels and ferrous powder-metallurgy materials. Application suitability depends on the grade.
Are CBN inserts suitable for aluminum?
For aluminum, copper and most non-ferrous workpieces, start with our PCD insert range. Mixed-material components require separate evaluation.
How do I choose the right CBN grade?
Send material designation, hardness, finishing allowance, interruption level, speed, feed, depth of cut, coolant and required surface finish. Select Please recommend if unsure.
What is the difference between solid CBN and PCBN variants?
Construction and usable cutting edges differ. The same ISO family may have several constructions and edge counts; select the variant as well as the full insert code.
Can CBN inserts handle interrupted cutting?
Suitability depends on interruption severity, workholding, grade and edge preparation. Do not assume that a finishing grade also suits interrupted roughing.
Can Huamin Tools provide custom CBN inserts?
Send a dimensioned drawing, construction and edge requirements, material and quantity for a feasibility review.
Are all listed combinations in stock?
Specifications and grade options are catalog references. Confirm the exact model, construction, edge count, grade and drawing for availability and lead time.
