We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

SUMITOMO Diamond Turning Insert: CPMT2.51.51EMU - Diamond Indexable Turning Inserts
SUMITOMODiamond Indexable Turning Inserts

SUMITOMO Diamond Turning Insert: CPMT2.51.51EMU

The SUMITOMO Diamond Turning Insert is a diamond indexable turning insert available in models CPMT2.51.51EMU and CPMT080204NMU, with manufacturer part number CPMT2.51.51EMU-AC420K. This product is designed for…

SKU 3G-OTH-258552

Also listed as: CPMT25151EMUAC420K · CPMT2 51 51EMU AC420K · CPMT2-51-51EMU-AC420K

Brand
SUMITOMO
Item
Diamond Turning Insert: CPMT2.51.51EMU
Category
Diamond Indexable Turning Inserts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SUMITOMO
Manufacturer Part Number
CPMT2.51.51EMU-AC420K

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

SUMITOMO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SUMITOMO Diamond Turning Insert is a diamond indexable turning insert available in models CPMT2.51.51EMU and CPMT080204NMU, with manufacturer part number CPMT2.51.51EMU-AC420K. This product is designed for precision machining applications.

Frequently Asked Questions

What is the SUMITOMO Diamond Turning Insert used for?

The SUMITOMO Diamond Turning Insert is used for precision machining applications such as finishing and light roughing of non-ferrous metals, plastics, and composites. Its CPMT geometry and AC420K grade deliver sharp cutting edges and wear resistance for consistent surface finish in CNC turning operations.

What are the specifications of the SUMITOMO CPMT2.51.51EMU-AC420K?

The SUMITOMO Diamond Turning Insert has model numbers CPMT2.51.51EMU and CPMT080204NMU, with manufacturer part number CPMT2.51.51EMU-AC420K. It is a diamond indexable turning insert designed for precision machining. For detailed dimensions and tolerances, consult the manufacturer's datasheet.

Where to buy SUMITOMO Diamond Turning Inserts worldwide?

3G Electric supplies SUMITOMO Diamond Turning Inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver to your facility. Contact us for pricing and lead time on the CPMT2.51.51EMU-AC420K or other SUMITOMO insert grades.

How to select the correct SUMITOMO turning insert grade?

Selecting the correct SUMITOMO turning insert grade depends on workpiece material, cutting speed, and finish requirements. The AC420K grade is suited for non-ferrous and abrasive materials. For steel or stainless applications, consult SUMITOMO's grade chart. 3G Electric can help match the insert to your operation.

Used in

Common applications for SUMITOMO
Automotive engine block machining — Sumitomo SNMG square turning inserts for facing and boring cast iron
Aerospace component turning — Sumitomo DNMG diamond inserts with UP chipbreaker for finishing titanium alloys
Oil and gas valve production — Sumitomo TPMR triangle inserts with T1500Z grade for threading stainless steel
General engineering shaft turning — Sumitomo CNMG diamond inserts with LU chipbreaker for medium interrupted cuts
Mold and die finishing — Sumitomo VNMG diamond inserts with UZ chipbreaker for hardened steel profiling
Heavy equipment repair — Sumitomo TCMT triangle inserts with AC810P grade for turning wear-resistant steels

SUMITOMO 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
SUMITOMO Diamond Turning Insert: CPMT2.51.51EMU, CPMT080204NMU (MPN CPMT2.51.51EMU-AC8025P)
SUMITOMO
SUMITOMO Diamond Turning Insert: CPMT2.51.51EMU, CPMT080204NMU (MPN CPMT2.51.51EMU-AC8025P)
SUMITOMO Diamond Turning Insert: CPMT2.51.52EMU, CPMT080208NMU (MPN CPMT2.51.52EMU-AC420K)
SUMITOMO
SUMITOMO Diamond Turning Insert: CPMT2.51.52EMU, CPMT080208NMU (MPN CPMT2.51.52EMU-AC420K)
SUMITOMO Diamond Turning Insert: CPMT2.51.52EMU, CPMT080208NMU (MPN CPMT2.51.52EMU-AC8025P)
SUMITOMO
SUMITOMO Diamond Turning Insert: CPMT2.51.52EMU, CPMT080208NMU (MPN CPMT2.51.52EMU-AC8025P)
SUMITOMO Diamond Turning Insert: CPMT2.51.51ESU, CPMT080204NSU (MPN CPMT2.51.51ESU-AC8025P)
SUMITOMO
SUMITOMO Diamond Turning Insert: CPMT2.51.51ESU, CPMT080204NSU (MPN CPMT2.51.51ESU-AC8025P)
SUMITOMO Diamond Turning Insert: CPMT2.51.51ESU, CPMT080204NSU (MPN CPMT2.51.51ESU-AC6040M)
SUMITOMO
SUMITOMO Diamond Turning Insert: CPMT2.51.51ESU, CPMT080204NSU (MPN CPMT2.51.51ESU-AC6040M)
SUMITOMO Diamond Turning Insert: CPMT2.51.51ESU, CPMT080204NSU (MPN CPMT2.51.51ESU-AC6030M)
SUMITOMO
SUMITOMO Diamond Turning Insert: CPMT2.51.51ESU, CPMT080204NSU (MPN CPMT2.51.51ESU-AC6030M)

More from SUMITOMO

View all SUMITOMO parts
Diamond indexable turning insert for precision machining of non-ferrous materials, composites, and abrasive alloys. Suitable for finishing and semi-finishing operations requiring tight tolerances and surface finish
SUMITOMO
Diamond indexable turning insert for precision machining of non-ferrous materials, composites, and abrasive alloys. Suitable for finishing and semi-finishing operations requiring tight tolerances and surface finish
Diamond indexable turning insert for precision turning and finishing operations on ferrous and non-ferrous materials in industrial machining. Also referenced as CNMG120412N-UZ
SUMITOMO
Diamond indexable turning insert for precision turning and finishing operations on ferrous and non-ferrous materials in industrial machining. Also referenced as CNMG120412N-UZ
Diamond indexable turning insert for CNC lathes, designed for medium to finishing cuts on ferrous and non-ferrous materials. The AC6030M grade provides balanced toughness and wear resistance. Suitable for general turning operations in automotive, aerospace, and engineering applications
SUMITOMO
Diamond indexable turning insert for CNC lathes, designed for medium to finishing cuts on ferrous and non-ferrous materials. The AC6030M grade provides balanced toughness and wear resistance. Suitable for general turning operations in automotive, aerospace, and engineering applications
Diamond indexable turning insert for precision machining of non-ferrous materials. Suitable for turning, facing, and boring operations requiring tight tolerances and fine surface finishes
SUMITOMO
Diamond indexable turning insert for precision machining of non-ferrous materials. Suitable for turning, facing, and boring operations requiring tight tolerances and fine surface finishes
Diamond indexable turning insert for precision turning operations on hard and abrasive materials. Available in VCMT332ENK and VCMT160408N-SK geometries. Suitable for applications requiring high wear resistance and fine surface finish
SUMITOMO
Diamond indexable turning insert for precision turning operations on hard and abrasive materials. Available in VCMT332ENK and VCMT160408N-SK geometries. Suitable for applications requiring high wear resistance and fine surface finish
Diamond indexable turning insert for precision turning operations on lathes. Suitable for finishing and light roughing of non-ferrous materials, plastics, and composites. Delivers high surface quality and dimensional accuracy in industrial machining applications
SUMITOMO
Diamond indexable turning insert for precision turning operations on lathes. Suitable for finishing and light roughing of non-ferrous materials, plastics, and composites. Delivers high surface quality and dimensional accuracy in industrial machining applications
Diamond indexable turning insert with CNMG shape, referenced as CNMG190612N-EM. Designed for precision turning and finishing of non-ferrous materials such as aluminum alloys, copper, and plastics. Suitable for high-speed machining applications requiring fine surface finish and wear resistance
SUMITOMO
Diamond indexable turning insert with CNMG shape, referenced as CNMG190612N-EM. Designed for precision turning and finishing of non-ferrous materials such as aluminum alloys, copper, and plastics. Suitable for high-speed machining applications requiring fine surface finish and wear resistance
Diamond indexable turning insert for precision turning and finishing of non-ferrous materials such as aluminum alloys and copper. Available in size designations CNMG331EEF and CNMG090404N-EF. Suitable for high-speed machining applications requiring excellent surface finish and wear resistance
SUMITOMO
Diamond indexable turning insert for precision turning and finishing of non-ferrous materials such as aluminum alloys and copper. Available in size designations CNMG331EEF and CNMG090404N-EF. Suitable for high-speed machining applications requiring excellent surface finish and wear resistance