The MDJNR (right-hand) and MDJNL (left-hand) are external turning toolholders built to ISO standard for use with DNMG negative-rake inserts. The rigid 25 × 25mm square shank and 93° approach angle deliver stability across longitudinal turning, facing, and profiling operations on a wide range of materials.
The top-clamp system locks the DNMG insert firmly in place, minimising movement under heavy cutting loads and ensuring consistent tool life and surface finish. The 55° diamond insert geometry provides a strong cutting edge with reliable chip control, while the negative rake promotes stability in interrupted cuts and harder materials.
Specifications
- Shank size: 25 × 25mm
- Insert compatibility: DNMG (55° diamond, double-sided negative rake)
- Approach angle: 93°
- Clamping style: Top clamp
- Standard: ISO / DIN
Variants
- MDJNR 2525 M15 – Right-hand, feeds right to left
- MDJNL 2525 M15 – Left-hand, feeds left to right
Applications
General external turning · Facing · Step turning · Profiling on CNC and conventional lathes
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