Seco 00041064 Indexable Boring Bar 2.25 in Right Hand

Product Description

The SECO 00041064 is a right-hand A-MDUN indexable boring bar designed for internal turning operations on CNC lathes and turning centers. Built from steel with a 1.5-inch shank diameter and a 14-inch overall length, it accepts DNMG 432 inserts held by a pin-and-clamp method. The 93-degree lead angle and negative rake geometry position the insert for stable, predictable cutting on a wide range of bore diameters starting at 2.25 inches. Through-coolant capability channels cutting fluid directly to the cutting zone, extending insert life and improving chip evacuation in deep-bore applications. This bar is sized for production environments where consistent bore geometry and reliable insert indexing are required.

This boring bar is suited for shops running medium to large diameter internal turning work on steel, cast iron, and similar materials. The A-MDUN toolholder style is a standard designation for interchangeable-style boring systems, making it a straightforward fit in operations already using DNMG 432 insert inventory. Typical applications include finish and semi-finish boring of hydraulic valve bodies, pump housings, bearing bores, and similar machined components where dimensional accuracy in the bore is critical. A licensed machinist or CNC programmer typically selects and sets this toolholder in a turret-style lathe or boring mill.

Key Features

• Minimum bore diameter of 2.25 inches suits medium to large internal turning work
• 14-inch overall length provides reach for deeper bore applications
• Through-coolant design directs fluid to the cutting edge for improved chip control and insert life
• Pin-and-clamp insert holding method provides rigid, repeatable insert seating
• 93-degree lead angle with negative rake for stable cutting geometry on diamond-shaped DNMG inserts
• Right-hand cutting direction compatible with standard lathe spindle rotation

Compatibility

Designed for use with DNMG 432 inserts (compatible insert size code 43/44). The diamond insert shape with a 0.5-inch inscribed circle and 0.1875-inch thickness is the standard for this toolholder style. No other specific machine model compatibility was stated in the product data.

Installation Notes

Installation is performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before inserting or indexing the boring bar. Verify shank clamping torque and overhang are within the machine tool manufacturer's published guidelines. Confirm through-coolant passages are clear and coolant pressure is within the machine's rated range before running at full feed and speed.