Hertel 1002857 Mtgn Indexable Turning Toolholder

Product Description

The HERTEL 1002857 is a right-hand MTGN-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. The holder features a negative rake geometry, which provides a stronger cutting edge and longer insert life when machining ferrous materials, hardened steels, and other demanding workpiece materials. The 0.5 inch by 0.5 inch shank keeps the toolholder compatible with standard tool turrets and quick-change toolposts in that bore range. The holder accepts TN..221 series inserts. Weighing 0.105 pounds, the 1002857 is a compact, rigid platform suited for production turning environments where consistent insert indexing and repeatability matter.

This toolholder is intended for use in production and job-shop turning applications where right-hand external turning is required. The MTGN style seats the insert at a negative rake angle, making it well suited for interrupted cuts and general-purpose turning of steel and cast iron. At 4.5 inches overall length with a 0.5 inch square shank, this holder fits standard OD turning stations on most light-to-medium duty CNC lathes and engine lathes. It is sold individually and is part of the Multi-Option series.

Key Features

• Right-hand cutting orientation for standard OD turning operations
• Negative rake geometry for stronger cutting edge and improved performance on ferrous materials
• Accepts TN..221 series indexable inserts
• 0.5 inch x 0.5 inch square shank fits standard tool turret pockets in that size range
• 4.5 inches overall length for compact tool station footprint
• Part of the Multi-Option series for broad insert and application flexibility

Compatibility

Designed to accept TN..221 series indexable turning inserts. Fits tool turrets and quick-change toolposts with a 0.5 inch square shank bore.

Installation Notes

Installation is performed by a machinist or toolroom technician. Ensure the lathe is powered down and the turret is in a safe, indexed position before changing or seating the toolholder. Secure the shank fully within the toolpost or turret pocket per the machine tool manufacturer torque and clamping requirements. Verify insert seating and clamp integrity before resuming cutting operations.