Iscar 3101949 Indexable Square-shoulder End Mill 3/4 in

Product Description

The ISCAR 3101949 is an indexable square-shoulder end mill designed for precision milling operations in ferrous and non-ferrous materials. Part of the Heli2000 series, it accepts AP..1003.. and HM90 AP..1003.. style inserts secured by screw-holding method, allowing fast insert changes without removing the tool from the spindle. The cutter body is solid carbide construction with a 3/4-inch cutting diameter, a maximum depth of cut of 0.394 inches, and a helical flute configuration across three flutes. The Weldon flat shank provides positive drive engagement and resists pullout under aggressive cutting conditions. At 3.38 inches overall length, this tool is suited for moderate-reach square-shoulder milling applications.

This end mill is used in CNC machining centers and milling machines requiring a 3/4-inch Weldon flat shank interface. It is well-suited for square-shoulder profiling, slotting within depth limits, and step milling on steel, cast iron, and similar workpiece materials. The 90-degree lead angle produces a true square shoulder, making it a common choice for part features requiring perpendicular walls. The tool is rated for a maximum ramping angle of 7.5 degrees, supporting helical and ramp entry strategies. Installation is performed by machining professionals and CNC setup technicians in job shop and production environments.

Key Features

• Heli2000 series HM90 E90A-10 toolholder design accepts AP..1003.. insert family including APCR, APCT, APKR, APKT, APKW, HM90APCT, HM90APKT, and HM90APKW 1003 styles
• 90-degree lead angle for true square-shoulder milling and perpendicular wall geometry
• Three helical flutes with 0.960 inches usable cutting length and 0.394 inches maximum depth of cut per pass
• Weldon flat shank with 2.38-inch shank length provides positive anti-pullout drive interface
• Maximum ramping angle of 7.5 degrees supports helical interpolation and ramp entry tool paths
• Manufactured to AS 9100, ISO 9001:2008, and ISO 14001:2004 standards

Compatibility

Compatible insert styles: APCR, APCT, APKR, APKT, APKW, HM90APCT, HM90APKT, and HM90APKW 1003. Insert size designation AP..1003.. and HM90 AP..1003.. as specified by ISCAR for the Heli2000 series. Requires a machine spindle or toolholder accepting a 3/4-inch Weldon flat shank.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Ensure the machine spindle is fully stopped and the control is in an e-stop or tool-change state before mounting or removing this tool. Secure the Weldon flat shank in a compatible end mill holder by tightening the set screw against the flat to the holder manufacturer's specification. Verify insert seating and screw torque per ISCAR insert documentation before initiating a cut.