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vbmt insert

VBMT insert

VBMT insert angle :35 degree 5° Positive Rake Insert with single-sided Chipbreaker;

Screw-On Insert, finshing machining;

Matching VBMT insert holder: SVJBR/L, SVABR/L, SVVBN, SVQBR/L, SVUBR/L;

Range of VBMT insert types(ISO)VBMT1103/VBMT1604;(ANSI) VBMT221/ VBMT331/ VBMT332;

VBMT Insert can deal with multiple operations by combining different chip breakers and grades;

Material : Tungsten Carbide;

Product Introduction

The VBMT insert can equip with multiple chip breakers to deal with finishing, semi-finishing, and roughing works.

We also develop various applicable coatings to enhance productivity.

Key Features of VBGT Inserts

  • Shape:

    • V: Rhombic (diamond-shaped) with a 35° included angle. This sharp angle offers strength at the cutting tip and allows for versatility.

    Clearance Angle:

    • B: 5° relief angle (clearance angle). This ensures the insert doesn’t rub on the workpiece.

    Other Features

    • Positive Rake Angle: The cutting face slopes slightly forward from the cutting edge, providing smoother cutting and lower cutting forces, suitable for softer materials or low-power machines.
    • Chipbreakers: VBMt inserts often feature chipbreaker geometries to control chip formation and flow.
    • Coatings: They can be coated with materials like TiN, AlTiN, etc., to improve wear resistance and tool life.

VBMT insert Specification

Understanding the VBMT Code

Here’s what the letters and numbers in the VBMt designation mean:

  • V: 35° rhombic shape
  • B: 5° relief angle (clearance angle)
  • M: Tolerance class (indicates precision of the size)
  • T: Can indicate hole type and chipbreaker design (varies by manufacturer)
  • Numbers:
    • Usually the first two numbers represent the inscribed circle (size of the diamond) in sixteenths of an inch (or directly in millimeters for ISO codes).
    • The third number represents thickness in sixteenths of an inch.
    • The last number often indicates the nose radius (smaller means sharper).

VBGT insert holder(Boring bar)

turning tool holder SVQCRL
turning tool holder SVUCRL


turning tool holder SVQBRL


turning tool holder SVUBRL

Carbide VBGT Insert Dimensions (ISO)

DesignationInscribed Circle (IC)ThicknessCorner Radius
VBMT 11030211mm (0.43")3.18mm (0.125")0.2mm (0.008")
VBMT 11030411mm (0.43")3.18mm (0.125")0.4mm (0.016")
VBMT 16040416mm (0.63")4.76mm (0.187")0.4mm (0.016")
VBMT 16040816mm (0.63")4.76mm (0.187")0.8mm (0.031")

Example: VBMT 160404 (ISO)

  • 35° rhombic shape, positive rake insert.
  • Inscribed circle of 12.7mm (approx. 1/2″).
  • Thickness of 4.76mm (approx. 3/16″).
  • Specific chipbreaker/hole design.

The Science Behind Carbide Inserts: How They're Made and Why They're So Strong

Carbide inserts are some of the most versatile and durable cutting tools available. But how are they made? And what makes them so strong? In this video, we’ll explore the science behind carbide inserts, from the properties of tungsten carbide to the manufacturing process.

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