SUMITOMO Diamond Turning Insert: CPMT321ESU
The SUMITOMO Diamond Turning Insert is a diamond indexable turning insert available in models CPMT321ESU and CPMT090304NSU, with manufacturer part number CPMT321ESU-AC8025P. These inserts are designed for turning…
SKU 3G-OTH-258983
Need installation or engineering help?
Ask a question
Product Description
The SUMITOMO Diamond Turning Insert is a diamond indexable turning insert available in models CPMT321ESU and CPMT090304NSU, with manufacturer part number CPMT321ESU-AC8025P. These inserts are designed for turning operations and are identified by the specified model numbers.
Frequently Asked Questions
What is the SUMITOMO Diamond Turning Insert used for?
The SUMITOMO Diamond Turning Insert is used for precision turning operations on lathes. It is designed for machining ferrous and non-ferrous materials, providing a sharp cutting edge and long tool life. Common applications include automotive, aerospace, and general manufacturing where tight tolerances and surface finish are critical.
What are the specifications of the SUMITOMO Diamond Turning Insert?
The SUMITOMO Diamond Turning Insert is available in models CPMT321ESU and CPMT090304NSU, with manufacturer part number CPMT321ESU-AC8025P. These are diamond indexable turning inserts designed for turning operations. The specific geometry and grade are optimized for cutting performance and wear resistance.
Where to buy SUMITOMO Diamond Turning Inserts worldwide?
You can source SUMITOMO Diamond Turning Inserts worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the CPMT321ESU-AC8025P and other models.
How to select the correct SUMITOMO Diamond Turning Insert?
To select the correct SUMITOMO Diamond Turning Insert, match the insert model (CPMT321ESU or CPMT090304NSU) to your tool holder's pocket geometry and your workpiece material. Consider the insert grade, such as AC8025P, for the required cutting speed and feed rate. Consult your machine's manual or a SUMITOMO application guide for best results.
Used in
Common applications for SUMITOMOSUMITOMO Products
3G Electric supplies SUMITOMO diamond indexable turning inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















