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The SECO 00055242 is a right-hand indexable boring bar designed for internal turning operations in metal cutting applications. Built on the Multi-Directional Turning (MDT) series platform, it accepts A-F style diamond-shaped inserts held in place by a screw-clamp method. The steel shank measures 1.25 inches in diameter with an overall length of 10 inches, and the maximum bore depth reaches 1.77 inches. Through-coolant capability is integrated, directing cutting fluid directly to the cutting zone to manage heat and extend insert life. The center-to-cutting-edge distance is 0.294 inches. This bar is sized for use in CNC lathes and turning centers where rigid, repeatable boring is required.
This boring bar is suited for shop-floor use in precision machining environments including job shops, production turning cells, and maintenance machining operations. The right-hand cutting direction and A-F insert compatibility make it a practical fit for standard internal diameter finishing and semi-finishing passes on steel, cast iron, and similar workpiece materials. Machinists and CNC operators working on lathes and turning centers will find this bar a direct fit for operations requiring a 1.25-inch shank bore holder.
Designed for use with A-F style diamond-shaped inserts, compatible insert size code 21. Fits tooling setups requiring a 1.25-inch diameter shank boring bar with right-hand cutting direction.
Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before mounting or removing the boring bar. Verify shank diameter compatibility with the tool holder or turret bore before installation. Confirm through-coolant ports are clear and aligned with the machine coolant supply before initiating cuts.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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