Dorian Tool 73310150894 Mtjn Turning Toolholder 3/4 Shank

Product Description

The DORIAN TOOL 73310150894 is a right-hand MTJN-style indexable turning toolholder designed for negative rake metal-cutting operations on CNC and manual lathes. It features a 3/4 inch by 3/4 inch steel shank and an overall length of 4.5 inches, providing a rigid, low-profile setup for external turning applications. The toolholder uses a clamp and pin insert-holding method to secure TN..32. series inserts, and the -7 degree rake angle promotes stable, controlled cutting performance. At 0.75 pounds, it is sized for standard toolpost and turret use. This toolholder is installed by machinists and CNC lathe operators working in production and job-shop environments.

This toolholder is intended for external turning operations where right-hand cutting direction is required. The MTJN style and 3-degree lead angle make it well suited for straight turning and light facing passes. Compatible insert sizes include TNM_322 and TNM_332, with an inscribed circle of 0.375 inches. It is used in both production shops and tool rooms handling ferrous and non-ferrous materials. The 3/4 inch square shank fits standard toolpost holders and quick-change systems designed for that shank size.

Key Features

• Right-hand cutting direction with MTJN toolholder style and 3-degree lead angle
• Negative rake angle of -7 degrees for stable cutting and insert edge strength
• 3/4 inch by 3/4 inch steel shank with 4.5 inch overall length
• Clamp and pin insert-holding method for secure, repeatable insert seating
• Compatible with TN..32. series inserts, including TNM_322 and TNM_332 sizes
• Insert inscribed circle of 0.375 inches; no coolant-through feature

Compatibility

Designed for use with TN..32. series indexable inserts, specifically TNM_322 and TNM_332 insert sizes with a 0.375 inch inscribed circle. Fits standard toolpost and turret systems accepting a 3/4 inch square shank.

Installation Notes

Installation is performed by qualified machinists or CNC lathe operators. Power down and de-energize the machine spindle before changing toolholders or inserts. Secure the shank fully within the toolpost or turret pocket to the manufacturer-specified engagement depth before tightening. Handle inserts with care and inspect the clamping pocket and pin for wear or debris before seating a new insert.