Hertel 1000020 Lh Sdjc Indexable Turning Toolholder

Product Description

The HERTEL 1000020 is a left-hand SDJC-style indexable turning toolholder designed for precision metal-turning operations on CNC and manual lathes. Built from steel with a neutral rake geometry and a 3-degree lead angle, this toolholder accepts DC..21.5. series inserts secured via a screw-type clamping method. The shank measures 0.5 inches wide by 0.5 inches tall with an overall length of 3.5 inches. It is intended for machinists and toolroom professionals who require a reliable, OEM-style turning solution with consistent insert indexing and repeatable cutting geometry.

This toolholder is suited for external turning applications on production and job-shop lathes where left-hand cutting direction is required. The SDJC style positions the insert at a neutral rake angle, making it appropriate for general-purpose turning on a range of workpiece materials. The screw-type insert retention keeps the insert firmly seated during interrupted cuts and continuous passes. Coolant-through capability is not available on this holder, so it is best applied in standard flood or dry cutting environments.

Key Features

• Left-hand cutting orientation for SDJC-style toolholder setups
• Neutral rake geometry with a 3-degree lead angle
• Accepts DC..21.5. series inserts with screw-type clamping
• Steel construction for rigidity and durability in turning applications
• 0.5 x 0.5 inch shank fits standard lathe toolposts and turrets
• No coolant-through — compatible with flood and dry cutting setups

Compatibility

Designed to accept DC..21.5. series indexable inserts (complete compatibility: DC.. 21.51). Fits standard lathe toolpost and turret systems that accommodate a 0.5 x 0.5 inch shank.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the lathe spindle is fully powered down and the machine is locked out before mounting or adjusting the toolholder. Secure the shank firmly in the toolpost or turret to the machine manufacturer's recommended clamping procedure. Use the correct torque driver or wrench for the insert clamping screw to avoid stripping the thread or cracking the insert.