LNMU0303ZER High-Feed Milling Inserts
Compare LNMU0303ZER double-sided carbide inserts by dimensions, geometry direction and carbide grade. Match the complete insert code to compatible EXN03R high-feed end mills and related size-03 cutter bodies.
Compact Insert Platform for Productive High-Feed Milling
LNMU0303ZER combines a thick insert body, double-sided economy and a small axial depth of cut with high feed per tooth. It is designed for suitable high-feed cutter bodies rather than conventional deep shoulder milling.
Four Usable Edges
Two cutting edges per side help reduce the cost per indexed edge.
Compact Size-03 Platform
Supports small- and medium-diameter high-feed cutter systems.
Small Axial Depth
ZER geometry uses a maximum axial depth of approximately 1.0 mm.
High-Feed Direction
Small entering-angle action converts cutting load into a stronger axial-force direction.
What Is an LNMU High-Feed Insert?
LNMU0303ZER is a double-sided rectangular high-feed milling insert used in compatible small entering-angle cutter bodies.
The complete designation identifies the insert family, size and high-feed geometry. Similar-looking rectangular inserts are not automatically interchangeable because width, thickness, hole design, edge preparation and cutter-pocket seating can differ.
LNMU0303ZER Insert Specifications
The dimensions below describe the common size-03 ZER platform used by compatible EXN03R cutter bodies. The complete suffix and current grade must still be confirmed for the supplied product.
| Base Designation | W1 (mm) | S (mm) | LE (mm) | RE (mm) | APMX (mm) | Cutting Edges | Compatible Platform |
|---|---|---|---|---|---|---|---|
| LNMU0303ZER | 6.0 | 4.3 | 3.2 | 1.2 | 1.0 | 4 | EXN03R / related size-03 bodies |
Choose the LNMU Geometry by Machining Condition
Search results and established size-03 product systems commonly separate geometry by general machining, low cutting force and stainless or heat-resistant material direction. Confirm the exact suffix available for the requested product.
Balanced Edge Strength
For stable steel, cast-iron and general-purpose high-feed roughing where a balance of toughness and wear resistance is needed.
Sharper Cutting Action
For long overhangs, lower-rigidity machines, lighter fixtures or applications where vibration and spindle load must be reduced.
Application-Specific Edge
For stainless steel, heat-resistant alloys and difficult materials after confirming the exact geometry, coating and coolant direction.
LNMU Grade Selection by Workpiece Material
Use these grade directions as a selection guide, then confirm current availability for the complete LNMU0303ZER geometry and coating combination.
Steel and cast-iron direction where toughness and interrupted-cut reliability are important.
General steel and stainless-steel direction, including stable machining and lighter finishing loads.
Steel and cast-iron direction for selected stable machining and wear-resistance requirements.
General-purpose direction across steel, stainless steel and cast iron.
Hardened and difficult-material direction when the complete geometry and cutting conditions are suitable.
Match LNMU0303ZER Inserts to EXN03R Cutters
The EXN03R cutter range uses LNMU0303ZER inserts across compact shank-type high-feed bodies. Confirm the complete cutter code, diameter, shank, number of teeth and body length.
Double-Sided Design with Four Usable Cutting Edges
LNMU0303ZER provides two cutting edges on each side. Correct indexing and stable pocket seating allow four usable edges before the insert is replaced.
LNMU0303ZER Milling Applications
Actual ramping angle, helical capability, feed and depth depend on the complete cutter body, geometry, grade, machine rigidity and workpiece setup.
High-Feed Face Milling
For rapid removal of shallow stock with a high feed per tooth and small axial depth.
High-feed milling toolsPocket Roughing
For cavity and pocket roughing where chip evacuation and radial engagement are controlled.
Ramping
For cutter bodies designed for oblique entry into the workpiece.
Helical Interpolation
For suitable EXN03R bodies when the programmed helix and cutter clearance are confirmed.
Long-Overhang Milling
Low-force geometry can support more stable machining in selected long-reach setups.
Die and Mould Roughing
For roughing complex pockets and residual stock before semi-finishing operations.
How to Choose an LNMU0303ZER Insert
Request LNMU0303ZER Pricing and EXN03R Compatibility Review
Provide the complete insert and cutter details so the correct geometry, grade and cutter fit can be checked.
