Description
Harlingen
Harlingen CNMG120408 80° Diamond Turning Insert — Pack of 10
Part No: CNMG120408 | Barcode: 9346967108658 | Brand: Harlingen
Through-hole 80° diamond negative-rake turning insert in TiAlN-coated micro-grain carbide. The CNMG geometry is the workhorse roughing insert — four strong corners and a robust 4.76mm body for heavy depths in steel and cast iron.
80° Diamond
12mm Edge Length
0.8mm Radius
TiAlN Coated
4 Edges Per Insert
Throughhole Clamp
Suited For
Cast Iron
General Purpose Steel
Stainless Steel
Key Features & Benefits
- ISO CNMG120408 designation — Standard 80° diamond (rhombic), 12mm cutting edge length, 4.76mm thick, 0.8mm corner radius — fits any CNMG-pocket holder.
- Four indexable cutting edges — Two strong corners on each face — 40 working corners in a pack of ten makes CNMG the most economical roughing insert.
- Negative rake, through-hole clamp — Through-hole screw retention plus negative rake handles the highest depth-of-cut and feed rates of any common lathe insert geometry.
- TiAlN coating — Hard golden-violet coating gives long edge life in steel and cast iron, even running dry.
- 0.8mm nose radius — Good chip control for general roughing; small enough to avoid chatter on lighter machines but strong enough for heavy cuts.
When to Use This Insert
Choose CNMG120408 for general-purpose roughing on negative-rake holders (MCLN, DCLN, MCBN style) when the job calls for high stock removal in steel or cast iron. The 80° diamond is the most rigid common geometry — ideal for taking heavy cuts on rigid lathes.
Authorised Australian Distributor — This product is sourced via Australia’s Harlingen distributor Gamer Industries and is backed by full Australian warranty and local support.
Product Specifications
| Specification | Value |
|---|---|
| Shape | 80° Diamond (Rhombic) |
| Cutting Edge Length | 12 mm |
| Thickness | 4.76 mm |
| Corner Radius | 0.8 mm |
| Clearance Angle | 0° (negative) |
| Retention | Through-hole clamp |
| Tolerance | +0.002 / −0.004 |
| Pack Qty | 10 |
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