Hertel 1000182 Lh Mtjn Indexable Turning Toolholder

Product Description

The HERTEL 1000182 is a left-hand MTJN-style indexable turning toolholder designed for negative rake insert applications on CNC and manual lathes. It accepts TN..43-series inserts with a 1/2-inch inscribed circle, secured by a clamp and screw holding method for rigid, repeatable positioning. The shank measures 3/4 inches wide by 3/4 inches tall, with an overall length of 4.5 inches and a head length of 1.19 inches. The back-of-bar to cutting edge distance is 1 inch. Constructed from steel, this toolholder is suited for general-purpose turning operations where consistent insert indexing and tool stability are required. Machinists and toolroom technicians are the primary installers.

This toolholder is intended for use in turning centers and engine lathes where a left-hand cutting approach is required. The MTJN style accommodates specific lead angle geometry and negative rake inserts, making it a common choice for facing and longitudinal turning passes on ferrous and non-ferrous workpieces. It is a single-application tool, not configured for multi-use or coolant-through delivery. The Series Multi-Option designation indicates it fits within a broader family of compatible HERTEL toolholding products.

Key Features

• Left-hand holder orientation for left-to-right cutting direction
• Negative rake geometry compatible with TN..43-series inserts
• Clamp and screw insert holding method for secure, repeatable seating
• 3/4 inch by 3/4 inch square shank for standard lathe tool post fitment
• Steel construction for rigidity and durability under continuous cutting loads
• No coolant-through configuration, suitable for external coolant delivery setups

Compatibility

Accepts TN..432 inserts (complete insert compatibility designation TN.. 432) with a 1/2-inch inscribed circle. Verify insert nose radius and tolerance class against the specific insert part number before ordering.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Before mounting, power down and lock out the machine spindle per facility lockout/tagout procedures. Seat the shank fully in the tool post or turret block and torque the clamping fasteners to the machine manufacturer's specified values. Confirm insert seating and clamp screw engagement before resuming cutting operations.