Sumitomo 2900W6J Square-shoulder End Mill 5/8 in Weldon

Product Description

The SUMITOMO 2900W6J is an indexable square-shoulder end mill designed for precision milling operations in metal cutting applications. Built around the WEZ cutter style, this right-hand tool accepts two AOMT11 or AOET11 indexable inserts and delivers a 90-degree lead angle for true square-shoulder profiling. The steel body features a 5/8-inch Weldon flat shank for positive drive in standard end mill holders, and through-coolant capability supports chip evacuation and tool life at elevated cutting speeds. The overall length is 3.218 inches, making it compact enough for close-tolerance work. This tool is suited for machinists and toolroom technicians running CNC vertical or horizontal machining centers.

The 2900W6J is applied in square-shoulder milling, slotting, and side-milling passes where a clean 90-degree wall is required. Through-coolant delivery makes it well-suited for ferrous materials and applications where heat buildup or chip packing is a concern. The 0.394-inch maximum depth of cut and 5/8-inch cutting diameter position this tool for finishing and semi-finishing passes in steel and similar alloys. Typical install environments include job shops, production machining cells, and maintenance toolrooms operating CNC milling equipment.

Key Features

• 5/8-inch cutting diameter with 0.394-inch maximum depth of cut for square-shoulder profiling
• 90-degree lead angle produces true perpendicular walls in milling passes
• Accepts two AOMT11 or AOET11 indexable inserts for cost-effective edge replacement
• Through-coolant capability improves chip clearance and extends insert life
• 5/8-inch Weldon flat shank provides positive, slip-resistant drive in standard holders
• Right-hand cut orientation; steel body construction

Compatibility

Designed for use with AOMT11 and AOET11 series indexable inserts. Compatible with standard Weldon flat end mill holders accepting a 5/8-inch shank diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the Weldon flat shank firmly in a properly sized end mill holder, torquing the set screw to the holder manufacturer specification before use. Verify spindle direction is set to right-hand rotation before engaging the cut. Confirm through-coolant passages are clear and coolant flow is active before beginning cuts to prevent insert damage from heat accumulation.