Seco 00043212 Indexable Boring Bar Right Hand Mtfn

Product Description

The SECO 00043212 is a right-hand MTFN indexable boring bar designed for internal turning operations on lathes and turning centers. Built from steel, it accepts TNMG 332 triangle inserts secured by a pin-and-clamp holding method. The bar features a 3/4-inch shank diameter and a 10-inch overall length, supporting a minimum bore diameter of 1 inch. With a negative rake angle of -14 degrees and a lead angle of 0 degrees, it is configured for stable, controlled material removal in bores. This tool is installed by machinists and toolroom technicians performing precision internal turning work.

This boring bar is suited for internal turning and boring applications on CNC lathes and manual turning centers in production and job-shop environments. Its MTFN toolholder style and right-hand cutting direction make it appropriate for conventional bore finishing and roughing passes where a 1-inch minimum bore diameter is acceptable. The pin-and-clamp insert retention provides consistent insert indexing during production runs. No coolant-through feature is present, so external coolant delivery should be planned at setup if required by the material or operation.

Key Features

• MTFN toolholder style accepts TNMG 332 triangle inserts with pin-and-clamp retention
• 1-inch minimum bore diameter with a 0.5-inch center-to-cutting-edge measurement
• 3/4-inch shank diameter and 10-inch overall length for rigid overhang control
• Negative rake angle of -14 degrees for stable cutting on harder workpiece materials
• Right-hand cutting direction; compatible insert inscribed circle is 3/8 inch
• Steel tool body construction for durability in production turning environments

Compatibility

Designed to accept TNMG 332 triangle inserts with a compatible insert size code of 33 and an insert inscribed circle of 3/8 inch. Manufacturer cross-reference number S12-MTFNR/L-3 may be used to confirm fitment with equivalent tooling systems.

Installation Notes

This boring bar is installed by qualified machinists or toolroom technicians on CNC or manual turning equipment. Confirm the machine spindle is fully stopped and all energy is locked out before mounting or removing the toolholder. Secure the shank in the turret or toolpost to the equipment manufacturer's specified clamping torque using proper boring bar holders. Index or replace inserts with the spindle off, and inspect the pin-and-clamp mechanism for wear before each insert change.