DNMG 150408-MA OS5835 Carbide Turning Insert

The DNMG 150408-MA OS5835 is a negative-rake carbide turning insert designed for semi-finishing and finishing operations in CNC and conventional lathes. Featuring a 55° rhombic geometry, it provides an excellent balance of edge strength and accessibility, making it suitable for a wide range of applications. The 0.8 mm corner radius enhances insert strength, allowing higher feed rates while maintaining stable performance and good surface quality.

Manufactured in the OS5835 grade, the insert combines a fine-grained carbide substrate with a PVD coating for high versatility. It performs effectively on steels, stainless steels, and general cast irons, making it a dependable choice for mixed-material environments. The MA chipbreaker is optimized for finishing and semi-finishing, ensuring efficient chip evacuation, reduced cutting forces, and smooth surface finishes.

The DNMG 150408-MA OS5835 is compatible with standard external turning holders, including MDJNR and DDJNR, specifically designed for 55° rhombic inserts. It is widely used in industries such as automotive, mold making, and general engineering, where reliable finishing performance is required.

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

• 08 – Corner radius: 0.8 mm

• MA – Chipbreaker for finishing applications

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

Key Features:

• DNMG-style 55° rhombic carbide turning insert

• Size: 15×15 mm, thickness 4.76 mm, radius 0.8 mm

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

• MA chipbreaker for smooth finishes and chip control

• Negative rake design for precision and stability

• Fits holders: MDJNR, DDJNR

• Ideal for semi-finishing and 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