Pramet TNMG Series Lathe Insert for Use with MTJNR, 4.76mm Height, 93° Approach, 16.5mm Length

This is a double-sided negative turning insert designed for precision machining. It features a triangular shape with an inscribed circle diametre of 9.525mm and a thickness of 4.76mm. This insert is coated with MT-CVD for enhanced performance and durability. It is suitable for a wide range of applications, including fine to heavy machining of steels.

• Insert can be used on both sides, maximizing its lifespan
• The insert’s geometry allows for efficient material removal and smooth cutting
• The coated carbide material ensures excellent wear resistance and extended tool life
• The chip-breaker design with rounded edges minimises chip buildup and enhances chip evacuation
• Whether you’re working with mild steels or tougher materials, this insert delivers consistent results

• Ideal for machining steels with alloy content up to 10% and hardness below 45HRC
• Suitable for castings of iron and carbon alloys with more than 2% carbon content
• Can handle engineering metals with a hardness greater than 45HRC

Yes, the insert’s MT-CVD coating provides excellent performance even at high cutting speeds.

The optimal cutting speed depends on the specific material being machined. Refer to the manufacturer’s guidelines for precise recommendations.

The TNMG 160412E-R:T9335 is designed for use with MTJNR toolholders.

Yes, its versatile design allows for both rough and finish turning applications.

Ensure proper tool setup, stable machining conditions, and appropriate feed rates to achieve optimal surface quality.

Turning Inserts

Breakdown of ISO Reference

Higher Number = Tougher / Resistant to Impact
Lower Number = Harder / Wear Resistant

TU5525 the New Universal Turning Grade

TU5525 is a truly universal tuning grade suitable for cutting Steel, Stainless Steel, Cast Iron and heat resistant Aaloys. There is no need to hold stock of a multitude of grades reducing the cost of inventory and time wasted changing inserts. One insert for almost all applications.

TP2135 a Tough Impact Resistant Grade

If insert breakage or chipping of the cutting edge is a problem TP2135 may be the answer. Some application do not offer the cutting edge a constant cutting surface whether from a non round part or holes in the part this constant impact on the cutting edge can lead to insert failing. TP2135 is designed to take higher impact loads giving a more secure cutting edge, suitable for cutting steel, stainless steel and heat resistant alloys.