CNMG Turning Inserts
CNMG Insert For Machining Stainless Steel YBM253 (ZCC-CT)
CNMG-EM carbide turning insert
- Grade YBM253 is our best performing insert for turning stainless steel
- CVD coated
- EM chipbreaker is designed for medium machining
- CNMG negative geometry
- 80° rhombic Insert
£8.80 excl. VAT
£10.56 incl. VAT
CNMG Insert For Machining Heat Resistant Super Alloys YBG205 (ZCC-CT)
CNMG-EM carbide turning insert
- Grade YBG205 is our best performing insert for turning heat-resistant super alloys
- CVD coated
- EM chipbreaker is designed for medium machining
- CNMG negative geometry
- 80° rhombic Insert
£5.81 excl. VAT
£6.97 incl. VAT
CNMG Insert For Machining Steel YBC252 Grade (ZCC-CT)
CNMG-DM carbide turning insert
- Grade YBC152 is our best performing insert for turning steel
- CVD coated
- DM chipbreaker is designed for medium machining
- CNMG negative geometry
- 80° rhombic Insert
£3.74 excl. VAT
£4.49 incl. VAT
CNMG Roughing Insert For Machining Steel YBC252 Grade (ZCC-CT)
CNMG-DR carbide turning insert for roughing
- Grade YBC252 is our best performing roughing insert for turning steel
- CVD coated
- DR chipbreaker is designed for roughing
- CNMG negative geometry
- 80° rhombic Insert
£5.89 excl. VAT
£7.07 incl. VAT
CNMG Finishing Insert For Machining Stainless Steel YBM253 (ZCC-CT)
CNMG-EF carbide turning insert for finishing
- Grade YBM153 is our best performing finishing insert for turning steel
- CVD coated
- EF chipbreaker is designed for finishing
- CNMG negative geometry
- 80° rhombic Insert
£3.74 excl. VAT
£4.49 incl. VAT
CNMG Finishing Insert For Machining Steel Grade YBC152 (ZCC-CT)
CNMG-DF carbide turning insert for finishing
- Grade YBC152 is our best performing finishing insert for turning steel
- CVD coated
- DF chipbreaker is designed for finishing
- CNMG negative geometry
- 80° rhombic Insert
£3.74 excl. VAT
£4.49 incl. VAT
CNMG Negative Turning Insert with KF Finishing Chipbreaker (KA9000 Universal Grade)
- Grade KA9000 is our universal grade for turning most steels and cast iron
- PVD coated
- KF chipbreaker is designed for finishing
- CNMG negative geometry
- 80° rhombic Insert
£3.94 excl. VAT
£4.73 incl. VAT
CNMG Turning Insert For Medium Machining (KA9000 Universal Grade)
- Grade KA9000 is our universal grade for turning most steels and cast iron
- PVD coated
- KM chipbreaker is designed for medium turning applications
- CNMG negative geometry
- 80° rhombic insert
£3.94 excl. VAT
£4.73 incl. VAT
CNMG Turning Insert For Roughing KA9000 Universal Grade
- Grade KA9000 is our universal grade for turning most steels and cast iron
- CVD coated
- KR chipbreaker is designed for roughing and interrupted cutting
- CNMG negative geometry
- 80° rhombic Insert
£3.79 excl. VAT
£4.55 incl. VAT
CNMG Turning Insert For Medium Machining Grade P2501
- Grade P2501 is our first choice and best performing insert for turning steel
- CVD coated
- KM chipbreaker is designed for medium turning applications
- CNMG negative geometry
- 80° rhombic Insert
£4.23 excl. VAT
£5.08 incl. VAT
£2.21excl. VAT
£2.65incl. VAT
CNMG Turning Insert For Medium Machining Grade M2501
- Grade M2501 is our first choice and best performing insert for turning stainless steel and heat resistant super alloys at low cutting speeds
- PVD coated
- AM chipbreaker designed for medium turning applications
- CNMG negative geometry
- 80° rhombic insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG Turning Insert For Medium Machining Grade P3501
- Grade P3501 is our first choice for turning stainless steel and interrupted turning of steel
- CVD coated
- LM chipbreaker designed for medium turning applications and unstaple conditions
- CNMG negative geometry
- 80° rhombic insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG Turning Insert For Finishing Steel Grade P2501
- Grade P2501 is our first choice and best performing insert for turning steel
- CVD coated
- KF chipbreaker is designed for finishing
- CNMG negative geometry
- 80° rhombic Insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG Turning Insert For Finishing Steel and HRSA Grade M2501
- Grade M2501 is our first choice and best performing insert for turning stainless steel and heat resistant super alloys at low cutting speeds
- PVD coated
- AF chipbreaker is designed for finishing of stainless steel and heat-resistant super alloys
- CNMG negative geometry
- 80° rhombic Insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG Turning Insert For Finishing Of Steel and Stainless Steel Grade P3501
- Grade P3501 is our first choice for turning stainless steel and interrupted turning of steel
- CVD coated
- LF chipbreaker is designed for finishing of sticky materials
- CNMG negative geometry
- 80° rhombic Insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG Turning Insert For Roughing Steel Grade P2501
- Grade P2501 is our first choice and best performing insert for turning steel
- CVD coated
- KR chipbreaker is designed for roughing and interrupted cutting
- CNMG negative geometry
- 80° rhombic Insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG Turning Insert For Roughing Stainless Steel and Heat Resistant Alloys Grade M2501
- Grade M2501 is our first choice and best performing insert for turning stainless steel and heat resistant super alloys at low cutting speeds
- PVD coated
- AR chipbreaker is designed for roughing of stainless steel and heat-resistant super alloys
- CNMG negative geometry
- 80° rhombic Insert
£4.23 excl. VAT
£5.08 incl. VAT
CNMG T-Max® Turning Inserts Chipbreaker PM Grade 4325
CNMG T-Max® P turning inserts feature 4 cutting edges and a neutral direction for both left and right hand cutting applications. Made with a hard carbide construction for greater rigidity and strength during machining. The CVD TICN+AL2O3+TIN coating helps reduce heat and wear prolonging the tool life.
£36.97 excl. VAT
£44.36 incl. VAT
CNMG T-Max® Turning Inserts Chipbreaker PR Grade 4325
CNMG T-Max® P turning inserts feature 4 cutting edges and a neutral direction for both left and right hand cutting applications. Made with a hard carbide construction for greater rigidity and strength during machining. The CVD TICN+AL2O3+TIN coating helps reduce heat and wear prolonging the tool life.
£31.00 excl. VAT
£37.20 incl. VAT
CNMG T-Max® Turning Inserts Chipbreaker PF Grade 4325
CNMG T-Max® P turning inserts feature 4 cutting edges and a neutral direction for both left and right hand cutting applications. Made with a hard carbide construction for greater rigidity and strength during machining. The CVD TICN+AL2O3+TIN coating helps reduce heat and wear prolonging the tool life.
£61.92 excl. VAT
£74.30 incl. VAT
CNMG Style Turning Inserts (Starke)
CNMG Style Turning Inserts (Starke)
- Grades suitable for steel, stainless steel, HRSA's and cast iron
- Finishing, medium and roughing chipbreakers available
- CNMG negative geometry with 4 cutting edges
- Grade SP1325 - CVD coated for high carbon and low alloy steels
- Grade SM3230 - CVD coated for a wide range of stainless steels
- Grade SM5015A - PVD coated for HRSA's, duplex and stainless steels
Frequently Asked Questions
A CNMG turning insert is an ISO standardised turning insert with a double side, used in CNC lathes.
Here is the ISO breakdown for CNMG inserts:
C = Rhombic/diamond shape w/ 80° included angle
N = 0° relief/clearance angle (negative rake geometry)
M = Tolerance class (standard/medium)
G = Chipbreaker geometry + mounting hole
The numbers used after CNMG tell you the physical size of the insert.
There are two common systems used, metric & imperial, here's an example of each:
1. Metric (ISO) System - this system is most commonly used today!
Example: CNMG 120408
12 = Cutting edge length (in mm) → For C-shaped (80° diamond) inserts, this is the length of the side - It also roughly corresponds to the inscribed circle (IC) diameter in mm
04 = Thickness of the insert (in mm, but coded) - Common values: 03 = ~3.18 mm, 04 = ~4.76 mm, 05 = ~6.35 mm, etc
08 = Nose radius (corner radius) in tenths of a mm
08 = 0.8 mm
04 = 0.4 mm
12 = 1.2 mm
16 = 1.6 mm, etc.
So CNMG 120408 = 12 mm edge, ~4.76 mm thick, 0.8 mm nose radius.
2. Inch (ANSI) system
Example: CNMG 432
4 = Inscribed circle size in 1/8ths of an inch
4 = 4/8 = ½ inch (~12.7 mm) IC
3 = Thickness in 1/16ths of an inch
3 = 3/16 = 0.1875 inch (~4.76 mm)
2 = Nose radius in 1/64ths of an inch
2 = 2/64 = 1/32 inch (~0.8 mm)
CNMG 432 is essentially the same size as CNMG 120408.