DNMG 150404-MA OS5835 Carbide Turning Insert

The DNMG 150404-MA OS5835 is a negative-rake carbide turning insert designed for finishing and semi-finishing applications on CNC and conventional lathes. With its 55° rhombic geometry, it offers a strong balance between accessibility to tight areas and edge strength. The 0.4 mm corner radius allows precise cutting and excellent surface quality, making it suitable for jobs requiring tight tolerances.

Manufactured in the OS5835 grade, this insert uses a fine-grained carbide substrate combined with a PVD coating, ensuring high versatility. It performs well in steels, stainless steels, and general cast irons. The MA chipbreaker is optimized for finishing operations, providing efficient chip control, reduced cutting forces, and superior surface finishes, even in medium cutting conditions.

The DNMG 150404-MA OS5835 fits standard external turning holders such as MDJNR and DDJNR, which are specifically designed for 55° rhombic inserts. It is widely used in automotive, general engineering, and mold-making industries where precision and consistency are essential.

Code Breakdown:

• D – Insert shape: 55° rhombic

• N – Clearance angle: 0° (negative rake)

• M – Tolerance class (medium)

• G – Insert with hole and chipbreaker

• 15 – Insert size: 15 mm

• 04 – Insert thickness: 4.76 mm

• 04 – Corner radius: 0.4 mm

• MA – Chipbreaker for finishing applications

• OS5835 – Grade optimized for steels, stainless steels, and cast iron

Key Features:

• DNMG-style 55° rhombic turning insert

• Size: 15×15 mm, thickness 4.76 mm, radius 0.4 mm

• OS5835 grade – versatile carbide for steels, stainless steels, and cast iron

• MA chipbreaker for finishing and chip control

• Negative rake design for durability and precision

• Fits holders: MDJNR, DDJNR

• Ideal for precision finishing operations

Grade Information (OS5835):

• Coating: PVD, copper color

• Application: general milling and turning of steels (45#, Q235), stainless steels (304, 316), cast iron

• Best for: turning and milling stainless steels

• Material hardness: HRC <30

• Cutting speed: 120–220 m/min