CNMM Inserts Manufacturer & Supplier in China
Source standard and custom CNMM turning inserts for heavy rough turning and high-feed stock removal in rigid negative-insert holders, with final selection based on holder and application review.
What Is a CNMM Insert?
A CNMM insert is an ISO 80° diamond, 0°-clearance, M class turning insert. Its negative insert with a fixing hole and one-sided pressed chip-forming geometry; 2 principal 80° corners supports heavy rough turning and high-feed stock removal in rigid negative-insert holders, depending on holder geometry, grade, edge preparation, work material, and cutting conditions.
Key Specifications
Insert Shape
80° diamond
Clearance Angle
0°
Tolerance Class
M class
Insert Configuration
Negative insert with a fixing hole and one-sided pressed chip-forming geometry; 2 principal 80° corners
Common ISO Sizes
CNMM 1204, 1606, 1906, 2507, 2509
Primary Applications
Heavy rough turning and high-feed stock removal in rigid negative-insert holders
Custom CNMM Insert Options
Configure the key manufacturing details for your insert application, from dimensions and cutting material to edge condition and identification.
Dimensions & Tolerances
Specify insert dimensions and tolerances according to your drawings.
Cutting Material & Grade
Select insert material and grade to suit your machining application.
Top Geometry & Chip Control
Customize top geometry and chip control features for your cutting needs.
Edge Preparation
Specify edge honing, chamfers and other edge preparation options.
Coating & Surface Treatment
Choose coating and surface treatments to meet your cutting needs.
Marking & Packaging
Customize insert markings and packaging to meet your order requirements.
Available CNMM Insert Sizes
CarbideMatch manufactures CNMM inserts in the standard sizes listed below and can review custom dimensions and application-specific configurations. Send us your required designation, drawing, dimensions, sample, work material, or cutting conditions for technical review and a quotation.
ISO Designation
IC (mm)
S (mm)
RE (mm)
D1 (mm)
CNMM 120404
12.7
4.76
0.4
5.16
CNMM 120408
12.7
4.76
0.8
5.16
CNMM 120412
12.7
4.76
1.2
5.16
CNMM 120416
12.7
4.76
1.6
5.16
CNMM 160612
15.875
6.35
1.2
6.35
CNMM 160616
15.875
6.35
1.6
6.35
CNMM 190608
19.05
6.35
0.8
7.94
CNMM 190612
19.05
6.35
1.2
7.94
CNMM 190616
19.05
6.35
1.6
7.94
CNMM 190624
19.05
6.35
2.4
7.94
CNMM 250724
25.4
7.94
2.4
9.2
CNMM 250732
25.4
7.94
3.2
9.2
CNMM 250924
25.4
9.52
2.4
9.2
Don't See the Configuration You Need?
The configurations shown above represent commonly requested options and may not include everything we can supply. Contact us to check another specification or discuss your custom requirements.
CNMM Insert Applications
CNMM inserts are commonly considered for the following operations when holder access, edge preparation, and cutting conditions are suitable.
External Turning
External cuts where CNMM holder access and the selected edge preparation are suitable.
Facing
Facing operations supported by the 80° diamond geometry and a rigid setup.
Profiling
Profile work within the access limits of the 80° diamond shape.
Finishing
Light finishing cuts with cutting data and edge condition matched to the work material.
Application Review
Drawing-based selection when interruption, tolerance, surface finish, or holder compatibility requires confirmation.
CNMM Insert FAQ
What holder information is needed for a CNMM quotation?
Provide the complete holder code, clamping method, hand, pocket condition, overhang, and clear photographs so seat and orientation compatibility can be checked.
How should a CNMM sample trial be documented?
Keep the toolpath, stock, coolant, holder, and cutting data unchanged, then record tool life, wear mode, chip control, surface finish, and dimensional drift.
What evidence is useful when a CNMM edge fails early?
Send close photographs of the failed edge, time to failure, material hardness, interruption pattern, runout, coolant delivery, and the exact speed, feed, and depth of cut.
Can CNMM inserts receive private marking?
Marking and packaging can be reviewed after the required traceability text, marking area, quantity, packaging format, and approval sample are defined.
What drawing details are required for a non-standard CNMM request?
Identify datums, controlled dimensions, edge treatment, hole details, surface requirements, inspection method, sampling plan, and acceptance limits.
How should a replacement CNMM insert be identified?
Provide every character on the existing insert and box, plus the holder, workpiece, current result, and the specific performance target; do not rely on the four-letter family alone.
About CarbideMatch
CarbideMatch is a cutting-tool manufacturer and multi-brand distributor with years of OEM manufacturing and industry experience. We currently focus on carbide and indexable inserts across a wide range of brands, grades and specifications.
Search by part number, ISO/ANSI code, grade or application to quickly identify suitable inserts and compatible alternatives
- Own Manufacturing Capabilities
- Multi-Brand Product Supply
- Application-Based Grade Matching
How We Work
Search by part number, ISO/ANSI code, grade or application — or send us your requirements and let us help match the right insert.
01
Submit Requirements
Share the part number, drawing, material or cutting conditions.
02
Review Application
We verify specifications, operation and performance goals.
03
Match the Solution
We match the right inserts to your materials, cutting conditions and requirements.
04
Quote & Sample
Confirm pricing, availability and samples when required.
05
Inspect & Deliver
Products are checked, securely packed and shipped on schedule.
06
Ongoing Support
We support trial feedback, repeat orders and optimization.