Seco 00043222 Left Hand Mwln Indexable Boring Bar

Product Description

The SECO 00043222 is a left-hand MWLN indexable boring bar designed for internal turning operations on CNC lathes and manual turning centers. Built from steel, it features a 1.0 inch shank diameter and a 12 inch overall length, making it suited for reaching into deeper bores with a minimum bore diameter of 1.28 inches. The toolholder uses a pin and clamp insert holding method and accepts WNMG 432 trigon inserts with a 1/2 inch inscribed circle. The negative rake geometry at -14 degrees and a -5 degree lead angle support stable, controlled cutting in left-hand cutting direction applications.

This boring bar is intended for turning and internal bore finishing operations in metal cutting environments, including production machining shops and job shops running ferrous and non-ferrous materials. The MWLN toolholder style is a standard configuration commonly found in CNC turning setups. The 0.64 inch center-to-cutting-edge measurement and 3/16 inch insert thickness suit moderate to heavy boring passes. This tool does not include coolant-through capability, so external coolant delivery should be planned accordingly in high-heat applications.

Key Features

• Left-hand cutting direction with MWLN toolholder style for internal turning
• Minimum bore diameter of 1.28 inches with a 12 inch overall length for extended reach
• Accepts WNMG 432 trigon inserts with 1/2 inch inscribed circle
• Pin and clamp insert holding method for secure, repeatable insert indexing
• Negative rake angle of -14 degrees and -5 degree lead angle for controlled cutting geometry
• Steel construction for rigidity in standard turning center setups

Compatibility

Designed for use with WNMG 432 trigon inserts, compatible insert size code 43/44. Accepts inserts with a 1/2 inch inscribed circle and 3/16 inch thickness. Intended for left-hand cutting direction on lathes and turning centers where MWLN-style toolholders are specified.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Secure the shank firmly in the tool turret or boring bar holder to the equipment manufacturer's specified clamping procedure before running the spindle. Verify insert seating and clamp torque before each use per the insert manufacturer's guidelines. Do not exceed the machine's rated spindle speed or depth-of-cut limits for the insert grade selected.