Hertel H00125146 Indexable Threading Toolholder 1.25 in

Product Description

The HERTEL H00125146 is an indexable threading toolholder designed for external thread turning operations on CNC lathes and turning centers. Built to the HSER series style, this right-hand toolholder accepts 27ER threading inserts secured by a screw-clamp holding method, providing repeatable insert positioning and reliable cutting edge engagement. The shank measures 1.25 x 1.25 inches square with an overall length of 7 inches, making it suited for standard-size lathe tool stations. Weighing 1.72 pounds, this is a solid, production-grade holder intended for use by machinists and toolroom professionals in metal-cutting environments.

This toolholder is used in external threading applications on manual or CNC lathes where consistent thread form accuracy is required. The HSER series is a common style on production floors handling a range of thread forms using indexable 27ER inserts. It is appropriate for both job shop and production turning environments where a 1-1/4 inch square shank tool station is present. Coolant-through capability is not included in this holder, so external coolant application or dry cutting conditions apply.

Key Features

• External threading operation with right-hand cutting orientation
• Accepts 27ER indexable threading inserts with 5/8 inch inscribed circle
• Screw-clamp insert holding method for secure, repeatable seating
• 1.25 x 1.25 inch square shank fits standard lathe tool blocks and turrets
• 7 inch overall length suits typical CNC and manual lathe setups
• HSER-1250-7-27 style designation for straightforward replacement and ordering

Compatibility

Designed for use with 27ER series indexable threading inserts. Fits lathe tool stations and turret blocks accepting a 1-1/4 inch square shank. No specific machine model compatibility was provided by the manufacturer for this holder.

Installation Notes

Installation is performed by qualified machinists following standard lathe tooling setup procedures. The machine must be powered down and the spindle locked before mounting or removing any toolholder from the turret or tool post. Ensure the shank seating surfaces and tool block bore are clean and free of chips before clamping. Verify insert orientation and thread hand before taking a cut.