Sumitomo 2900W2R Indexable Square-shoulder End Mill 3/4 in

Product Description

The SUMITOMO 2900W2R is an indexable square-shoulder end mill designed for precision milling applications across a wide range of workpiece materials. Built on the WaveMill platform, this toolholder uses a WEX cutter style with a 90-degree lead angle, delivering true square-shoulder cuts in a single pass. The 3/4 inch cutting diameter pairs with a 3/4 inch Weldon flat shank for secure, anti-rotation clamping in standard end mill holders. Through-coolant capability directs fluid directly to the cutting zone, helping manage heat and chip evacuation during aggressive material removal. Inserts are screw-held using the AX.T 12350 insert style and the tool accepts 3 inserts. Overall length is 4.091 inches, with a shank length of 2.031 inches and a head length of 2.060 inches.

This end mill is suited for milling operations on universal workpiece material classifications including ISO material codes K, M, N, P, and S, covering cast iron, stainless steel, non-ferrous metals, steel, and heat-resistant superalloys. It is typically used in vertical and horizontal machining centers where a rigid, indexable square-shoulder tool is required. The Weldon shank design is common in production environments where pullout resistance under heavy side loads is a priority. The ISO designation for this toolholder is WEX20750EMW.

Key Features

• 90-degree lead angle for true square-shoulder milling
• WEX cutter style with Weldon flat shank for anti-rotation grip
• Accepts AX.T 12350 insert style, screw-held, 3 inserts total
• Through-coolant design for improved chip evacuation and tool life
• Compatible with ISO material codes K, M, N, P, and S (universal application)
• Compact 4.091 inch overall length for use in tight-clearance setups

Compatibility

Uses AX.T 12350 insert style. ISO toolholder designation WEX20750EMW. Designed for use in standard Weldon-shank end mill holders on CNC machining centers requiring a 3/4 inch indexable square-shoulder tool.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Secure the Weldon flat shank fully into a matched end mill holder and torque the set screw per the machine tool manufacturer's specification. Before inserting or replacing cutting inserts, ensure the machine is powered down and in a locked-out state. Confirm through-coolant passages are clear and that the coolant supply pressure is within the machine tool's rated range before beginning operation.