Seco 00057664 Indexable Boring Bar Right Hand Stld

Product Description

The SECO 00057664 is a right-hand STLD indexable boring bar designed for internal turning operations on lathes and turning centers. Built from steel, it accepts TD.. 1.2 triangular inserts held in place by a screw-clamp method and delivers a negative rake angle with a -5 degree lead angle for controlled cutting action. The shank measures 0.5 inches in diameter and the tool runs 3.25 inches overall in length. It is suited for machinists and tool-and-die professionals who need a compact, reliable boring bar for small-bore finishing and roughing passes in steel, cast iron, and similar materials.

This boring bar handles bores starting at 0.3 inches minimum diameter and reaches up to 1.25 inches maximum bore depth, making it a practical choice for tight-bore internal turning work on production and job-shop lathes. The right-hand cutting direction and STLD toolholder style follow standard indexable tooling conventions. Compatible insert size code is 1.21.5 and the associated insert screw is CS120. No coolant-through capability is present on this holder.

Key Features

• Minimum bore diameter of 0.3 inches enables work on small internal features
• Maximum bore depth of 1.25 inches suits typical short-bore turning applications
• Screw-clamp insert holding method provides positive, repeatable insert seating
• Negative rake, -5 degree lead angle geometry for stable cutting in steel and cast iron
• Steel construction delivers rigidity and durability in turning center environments
• Uses readily available TD.. 1.2 triangular inserts with 5/32-inch inscribed circle

Compatibility

Accepts TD.. 1.2 triangular indexable inserts with a compatible insert size code of 1.21.5 and a 5/32-inch inscribed circle. Insert screw CS120 is specified for this holder. The manufacturer catalog number for this tool is S0408 STLDR-1.2.

Installation Notes

Installation is performed by qualified machinists or tool-room personnel. Secure the 0.5-inch shank in a properly sized boring bar holder or turret station and confirm runout before cutting. Ensure the machine spindle is fully stopped and the turret is locked before indexing or replacing inserts. Follow the machine tool manufacturer torque guidelines for the insert clamping screw and inspect the insert seat for chips or debris before each insert change.