MDJNR2525M11 Turning Tool Holder

The MDJNR2525M11 Turning Tool Holder is a high-performance external lathe holder designed for DNMG 1104 and DNMG 1106 negative inserts. With a rigid 25×25 mm shank, the MDJNR2525M11 Turning Tool Holder provides maximum stability, accurate insert positioning, and reduced vibration in medium to heavy-duty machining. Built with a lever-lock clamping system, the MDJNR2525M11 Turning Tool Holder ensures secure seating of inserts, making it reliable for steels, stainless steels, and cast irons.

Its 93° approach angle offers versatility in external turning and facing applications. The negative rake design allows DNMG inserts to use multiple cutting edges, extending tool life and improving cost efficiency. This toolholder is ideal for roughing and semi-finishing operations, delivering consistent dimensional accuracy and smooth surfaces.

Widely used in automotive, aerospace, and heavy engineering industries, this toolholder is recognized for its robustness, versatility, and compatibility with DNMG inserts. Its strong clamping system ensures performance in both continuous and interrupted cuts, making it suitable for production environments where durability is critical.

Code Breakdown

• M – Lever-lock clamping system

• D – Insert shape: 55° diamond (DNMG)

• J – Toolholder style with 93° approach angle

• N – Insert clearance: 0° negative relief

• R – Right-hand cutting direction

• 2525 – Shank size: 25×25 mm

• M11 – Seat size for DNMG 11 inserts

Key Features of the Tool Holder

• Rigid 25×25 mm shank for stability and precision

• Compatible with DNMG 1104/1106 negative inserts

• Lever-lock clamping system for secure insert seating

• 93° approach angle for OD turning and facing

• Reliable for steels, stainless steels, and cast irons

Equivalent Tool Holders (Other Brands)

• Sandvik: MDJNR 2525M11-4325 (Sandvik official site)

• Seco: MDJNR 2525M11

• Kennametal: MDJNR 2525M11 KCTL

• Iscar: MDJNR 2525M11-D

Application Guidelines

• Compatible inserts: DNMG 110404, DNMG 110408, DNMG 110412

• Best suited for medium-to-heavy cutting

• Approach angle: 93° for external turning

• Typical industries: automotive, aerospace, general engineering

For DNMG inserts and other external turning holders, visit our Diamond Cut store.