Seco 02770505 Indexable Square-shoulder End Mill 3/4 in

Product Description

The SECO 02770505 is an indexable square-shoulder end mill designed for precision milling operations in metalworking and machining environments. Built on the Square 6 series platform, it accepts XNEX 04 style inserts secured by screw-clamping and operates at a 90-degree lead angle to produce true square shoulders. The tool features a 3/4-inch cutting diameter, a maximum depth of cut of 0.157 inches, and a 3/4-inch cylindrical shank with an overall length of 5.91 inches. Through-coolant capability supports heat management and chip evacuation at high spindle speeds up to 29,400 RPM. Machinists and CNC operators in production shops install this toolholder for shoulder milling, face milling, and slotting applications requiring tight wall-to-floor accuracy.

This end mill is suited for use in CNC machining centers running shoulder milling, ramping, or contour milling operations where a consistent 90-degree wall angle is required. The negative rake geometry and three-insert configuration make it a reliable choice for steel and ferrous material removal at moderate to high feed rates. The R217.96-04 toolholder designation aligns it within the SECO Square 6 indexable milling family. It is typically used in job shops, production facilities, and tool rooms where repeatability and insert indexability reduce downtime.

Key Features

• 3/4-inch cutting diameter with 0.157-inch maximum depth of cut per pass
• 90-degree lead angle produces accurate square shoulders in one pass
• Accepts XNEX 04 style inserts with screw-clamp holding method
• Through-coolant design supports chip evacuation and tool life at high RPM
• 3-flute, 3-insert configuration balances material removal rate and stability
• Steel tool body construction in the Square 6 series platform

Compatibility

Compatible with XNEX 04 series indexable inserts. Conforms to ISO number R217.96-00.750-0-04-3A. Designed for use with R217.96-04 toolholder-style setups within the SECO Square 6 indexable end mill series.

Installation Notes

Installation and insert changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a locked-out, tagged-out state. Use the appropriate Torx or hex key to secure inserts to the manufacturer-specified clamping method without over-torquing. Verify through-coolant passages are clear before mounting in the spindle. Confirm maximum RPM does not exceed 29,400 and that spindle runout is within acceptable tolerance before engaging the cut.