Full Radius MRMN Profiling & Grooving Inserts
Achieve superior surface finishes and precise contouring with our MRMN series carbide inserts. Featuring a full-radius geometry and double-ended design, these inserts are engineered for multi-directional profiling and radius grooving on Steel, Stainless Steel, and Cast Iron. Fully compatible with standard MGMN/MGEHR holders for maximum versatility.
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Product Overview
The MRMN series represents the industry standard for high-precision profiling and radiused grooving. Unlike flat-top grooving inserts, the MRMN features a perfectly round cutting edge (Full Radius), making it the ideal tool for copy turning, undercutting, and machining complex geometries without stress risers.
Key Features & Benefits:
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Full Radius Design: The circular tip allows for multi-directional cutting (side turning and plunging), creating smooth transitions between groove walls and floors.
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Double-Ended Economy: Each insert features two usable cutting edges, effectively halving your tool cost compared to single-ended profiling tools.
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Universal Compatibility: Designed to fit standard MGEHR/L grooving holders. No need to invest in specialized tooling systems—simply swap your MGMN insert for an MRMN insert.
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High Surface Quality: The round geometry acts as a wiper during light cuts, delivering a mirror-like finish on the workpiece.
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Versatile Applications: Perfect for O-ring grooves, ball-end machining, stress-relief grooves, and general copy turning.
Available Grades:
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Grade for Steel (P): Optimized PVD coating for high wear resistance in carbon and alloy steels.
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Grade for Stainless (M): Prevents built-up edge (BUE) in gummy materials like 304/316 stainless steel.
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Grade for Aluminum (N): Uncoated, polished surface for non-ferrous machining.
MRMN Specifications Table
| Picture | Type | L (mm) | W (mm) | S (mm) | RE (mm) | Application | Grade for Choice |
|---|---|---|---|---|---|---|---|
 | MRMN200-M | 16 | 2 | 3.5 | 1.0* | Profiling (Full Radius) | D9050,D3020 |
| MRMN300-M | 21 | 3 | 4.8 | 1.5 | |||
| MRMN400-M | 21 | 4 | 4.8 | 2 | |||
| MRMN500-M | 26 | 5 | 5.8 | 2.5 | |||
| MRMN600-M | 26 | 6 | 5.9 | 3 |
*All inserts fit standard MGEHR/L, MGEHRL-L, MGEVRL ,MGAHR, MGHHR, MGFVR holders.
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D9050 (Universal): A tough PVD grade for Steel and Stainless Steel.
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D3020 (Steel): A thick CVD grade for maximum wear resistance in continuous steel cutting.
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Contact our sales team to discover all of your pricing options
