Indexable Shoulder Mill EM90 40X4 016 APKT 1604 ISO

EM90 40X4 016 APKT 1604 ISO – 90° Indexable Face & Shoulder Milling Cutter

The EM90 40X4 016 APKT 1604 ISO is a high-performance indexable milling cutter designed for 90° shoulder milling, face milling, contouring and general-purpose machining operations. Its 40 mm cutting diameter and four-insert configuration provide an excellent balance between productivity, cutting stability and surface finish.

The cutter is designed to accept standard ISO APKT 1604 indexable carbide inserts, allowing the cutting grade and chipbreaker geometry to be selected according to the workpiece material and machining conditions.

Technical Specifications

Main Applications

The EM90 cutter is suitable for a wide range of milling operations, including:

• 90° shoulder milling
• Face milling
• Step milling
• Edge machining
• Pocket and contour milling
• General roughing and semi-finishing
• Production machining and maintenance applications

The 90° geometry makes the cutter particularly suitable when machining components requiring a defined shoulder or vertical wall while simultaneously generating a flat bottom surface.

APKT 1604 Insert Compatibility

The cutter uses widely available APKT 1604 ISO indexable inserts. Different insert grades and chipbreaker geometries can be selected depending on the workpiece material.

With the appropriate carbide insert, the cutter can be used for machining:

• Carbon steels
• Alloy steels
• Stainless steels
• Cast iron
• Aluminum and non-ferrous alloys
• Other engineering materials depending on the selected insert grade

The positive geometry typically associated with APKT inserts helps reduce cutting forces and promotes smooth chip evacuation, making this cutter suitable for both conventional milling machines and CNC machining centers.

Key Advantages

• 40 mm cutting diameter for versatile general-purpose milling.
• 4 cutting inserts provide efficient material removal and balanced cutting action.
• 90° approach angle for accurate shoulder and face milling.
• Compatible with standard APKT 1604 ISO inserts.
• Replaceable carbide inserts eliminate the need to regrind the complete cutter.
• Positive cutting geometry helps reduce spindle load and cutting forces.
• Suitable for roughing and semi-finishing operations.
• Good combination of productivity, rigidity and surface quality.
• Insert grade can be changed according to the material being machined.
• Suitable for use on CNC machining centers, vertical milling machines and suitable conventional milling machines.

Recommended Use

Cutting parameters such as spindle speed, feed rate and depth of cut should be selected according to:

• Workpiece material
• Carbide insert grade
• Insert chipbreaker geometry
• Machine spindle power
• Tool rigidity
• Workholding conditions
• Required surface finish
• Coolant or dry-machining strategy

For optimum performance, always use cutting parameters recommended for the specific APKT 1604 insert grade installed in the cutter.

Product Configuration: Ø40 mm × 4 inserts × Ø16 mm bore – 90° – APKT 1604 ISO.fa