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PCD Tipped Inserts
PCD has been proven in many areas of machining non-ferrous materials and now modern materials such as high silicon aluminums and glass filled epoxy resins may now be machined utilizing the enormous benefits of polycrystalline diamond (PCD) super abrasive materials. In order to make these super abrasive cutting materials more 'user friendly', Prima Tooling manufacture tipped inserts which are interchangeable with the conventional ISO range of tungsten carbide and ceramic cutting inserts now found in most machining environments. Therefore, whenever a change of work piece may dictate the use of super abrasives, the appropriately tipped PCD insert may now simply be fitted to the current tool holders, with minimum machine downtime.


In practice the vast majority of carbide inserts for turning, boring, milling etc. may be tipped with PCD, to provide the desired cutting edges. However, very small tips which are impractical may be produced entirely from a solid disc of PCD to the correct shape of the insert.


We also offer a recondition service to re-tip your existing inserts to original specifications.


The following notes are intended as a guide to selection, price coding and ordering of Prima Toolings tipped inserts.


PCD may be cost effectively employed to machine the following broad range of materials:


  • Non-ferrous metals and alloys including, aluminium, copper, bronze, brass, green tungsten carbide, precious metals and MMC's.
  • Non-metallic materials including, ceramics, reinforced plastics, hard rubber, chipboard, MDF's and other fibreboards, etc.

PCD may be used for both roughing and finishing work, although it is usually most beneficial when tight tolerances or high surface finishes are required combined with the need for exceptionally long tool life. It is available in three grades of increasing crystal size and toughness but with a decreasing of edge quality.


The finest grade is, therefore, only employed where superior surface finish is the main objective, the medium grade is the general purpose material giving long life with good component finishes; the coarse grade is used where maximum abrasive resistance is required and where finish is not critical, for example the machining of metal matrix composites.


Please add grade letter at end of ISO or ANSI number, F for fine, M for medium, C for course. e.g CNMA120404 M


Prima Tooling will be pleased to offer advice on the selection of the best grade of PCD for your particular application.

CNMA ISO ANSI I.C. mm S mm R mm H mm L mm A RA
CNMA120402   12.7 4.76 0.2 5.16 4 0 0
CNMA120404 CNMA431 12.7 4.76 0.4 5.16 4 0 0
CNMA120408 CNMA432 12.7 4.76 0.8 5.16 4 0 0
CNMA1204012 CNMA433 12.7 4.76 1.2 5.16 4 0 0
CNMA1204016 CNMA434 12.7 4.76 1.6 5.16 4 0 0




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