Value Collection TCN-15900J Turning Insert TNMA322 TCN55

Product Description

The VALUE COLLECTION TCN-15900J is a solid carbide turning insert conforming to ANSI insert code TNMA322 and ISO insert code TNMA160308. It features a 60-degree triangular shape with a negative side clearance (N clearance code) and a flat-top chip breaker geometry. The inscribed circle measures 3/8 inches (0.375 inches), insert thickness is 1/8 inches (0.125 inches), and the corner radius is 1/32 inches (0.031 inches). Manufactured to grade TCN55 with an ISO material grade of C5, this insert is suited for turning operations on steel and stainless steel workpiece materials. It is held in the toolholder via clamp and pin method.

This insert is intended for use in CNC and manual turning centers where a negative-rake TNMA-style seat is required. The TCN55 grade and C5 material classification make it appropriate for general-purpose turning of ferrous materials including carbon steels and stainless steels, corresponding to ISO material codes P and M. Machinists and tooling technicians select this geometry for interrupted and continuous cuts where the triangular insert shape provides up to six usable cutting edges across both faces.

Key Features

• Solid carbide construction, manufacturer grade TCN55, ISO material grade C5
• ANSI insert code TNMA322 / ISO insert code TNMA160308
• 60-degree triangular insert shape with flat-top chip breaker
• Inscribed circle: 3/8 inches (0.375 inches); corner radius: 1/32 inches (0.031 inches)
• Negative side clearance (N), tolerance code M
• Clamp and pin holding method for secure seating in TNMA toolholders
• Hole diameter: 0.150 inches for locating pin engagement

Compatibility

Designed for use in TNMA-style negative-rake turning toolholders that accept a 322 ANSI size code insert with clamp and pin retention. Verify toolholder pocket specification against ANSI and ISO insert codes TNMA322 and TNMA160308 before ordering.

Installation Notes

Insert seating and replacement should be performed by a qualified machinist or tooling technician with the machine powered down and the spindle locked out per applicable lockout/tagout procedures. Inspect the toolholder pocket for wear or debris before seating the insert. Torque the clamp fastener to the toolholder manufacturer's specification — do not estimate or over-torque. Dispose of worn inserts in accordance with facility protocols for carbide tooling waste.