Seco 00071938 Sdjc Indexable Turning Toolholder

Product Description

The SECO 00071938 is a right-hand SDJC-style indexable turning toolholder with a neutral rake angle, designed for use on CNC lathes and manual turning centers in metal cutting applications. The toolholder features a 3/8 inch by 3/8 inch square shank and an overall length of 2.5 inches, making it suited for close-quarters turning setups. It accepts DC..21.5. series inserts secured via a screw-lock clamping method, providing repeatable edge positioning and rigid insert retention. Intended for installation by machinists and CNC tooling technicians, this holder supports turning operations across a broad range of workpiece materials including ferrous and non-ferrous metals.

This toolholder is designed for external turning applications on production and job-shop lathes. The SDJC geometry provides a negative 3-degree lead angle suited for longitudinal turning passes. Compatible insert seat designation is DC..21.5., specifically the DCMT 21.51, with a 1/4 inch inscribed circle. The universal material compatibility rating covers material groups H, K, M, N, P, and S, making this holder useful across steel, stainless, cast iron, non-ferrous, and high-temperature alloy turning operations. No coolant-through capability is present on this holder.

Key Features

• SDJC toolholder style with right-hand cutting direction and neutral rake angle
• Screw-lock insert clamping for secure, repeatable insert indexing
• 3/8 inch by 3/8 inch shank with 2.5 inch overall length
• Accepts DCMT 21.51 inserts with 1/4 inch inscribed circle
• Compatible with universal workpiece material groups H, K, M, N, P, and S
• Steel toolholder body construction

Compatibility

Designed to accept DC..21.5. series inserts, specifically the DCMT 21.51. Compatible insert size code is DC215. Catalog reference number SDJCR62.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the lathe is powered down before mounting or adjusting the toolholder. Secure the shank in the tool post or turret to the appropriate clamping torque specified by the machine manufacturer. Verify insert seating and screw engagement before returning the machine to operation.