Faster Grinding Without Burning

HPL (High Performance Lubrication) Grinding Wheels rely on premium grade CBN crystals fixed within a durable, porous, lubricated acting bonding matrix to allow substantially faster grinding of difficult materials without sacrificing quality due to wheel loading and/or part burning.

The new HPL superabrasive wheels are a significant extension of the HPB- (High Performance Bonding) Technology. HPL wheels contain components acting like a lubricant that are intrinsic to the bonding matrix chemistry and are released uniformly as the wheel breaks down. Wheels manufactured with this technology minimize friction from bond/work piece interactions, minimize heat generation, and deter the onset of metal loading into the bond structure.

HPL technology also makes it possible to implement wheel characteristics that are not economically feasible with standard vitrified bonds.  The superior grit retention and lubricating properties of the bond make it possible to utilize high concentrations of premium grade CBN crystals that in a standard bonding matrix would generate too much pressure and heat.  This allows Meister to manufacture wheels with superior cutting performance and wear resistance compared to the known systems.

The unique properties of these intrinsically lubricated wheels address a wide range of problems such as: burning of parts, wheel loading, excessive wheel wear due to heat related issues, and quality issues due to temperature sensitive materials.

Applications for the new HPL abrasives technology include:


  • Deep bore grinding with limited coolant access, such as fuel injection nozzle components
  • Blind-end bore grinding such as lash adjusters and tappets
  • Heavy-stock form-grinding applications such as electronic power steering (EPS) ball-nut tracks
  • Creep-feed grinding of tool steels and superalloys
  • High stock removal out-of-round grinding for punches
  • Any application where the concentration of oil and lubricant are less than ideal or the flow of coolant is impeded, as is the case with deep bores

HPL (High Performance Lubrication) CBN grinding wheels are available for both internal and external grinding with mesh sizes ranging from 60 to1200.


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As a specialist in vitrified CBN and diamond wheels, Meister Abrasives present as a new tool concept its innovative HPB (High-Performance Bond) technology which can offer the user major benefits in terms of cost and quality.

The newly developed generation of abrasive tools optimises both productivity (cycle times, dressing intervals, machine downtime etc.) and component quality (geometric requirements, damage to the workpiece boundary layer etc.).

Meister devoted particular attention to a number of factors when developing the new HPB technology:

  • Getting the right CBN grit properties
  • Ensuring (wear) strength over the crystal morphology
  • Obtaining cutting ability over the crystal morphology in conjunction with targeted pretreatment

Optimising grit retention forces:

  • Ensuring the strength of the bond bridges with the right composition and heat treatment of the vitrified bond
  • Interfacial bonding of the CBN grit by optimising the wetting of the grit during manufacture and controlled chemical reaction/compatibility

The results: 

  • Improved wear resistance and stability of form
  • Increased pore volume
  • Improved coolant supply and chip discharge

With the help of its HPB technology and by selectively optimising these individual factors, Meister Abrasives have succeeded in increasing the variability of the whole system and enhancing the cutting ability and wear resistance of the tool.

The relative weighting of these factors can be individually adjusted in order to address a specific shaping requirement. The principle is shown by way of example in the following chart.

If we assume average cutting ability, pore volume and grit retention forces for a standard composition, then as well as the general improvement in all three parameters, with the HPB principle the benefits can be weighted more strongly either in favour of the grit retention forces and hence wear resistance, or alternatively of the pore volume and hence cooler abrading.

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HPB bond structure REM image


HPB bond triangle


The increasing requirements for bore grinding applications using dressable CBN abrasive tools have required yet another step towards an even more optimised bond. As a market leader in the field of vitrified CBN wheels, Meister Abrasives is enlarging its range of high-performance tools to meet these demands.

The already successful HPB (High-Performance Bond) systems must be developed further to meet the needs of customers seeking to achieve ever-higher stock-removal rates for very small bores while optimising surface quality at the same time.

Under the designation HPC for High-Performance Cutting, the company has succeeded in enhancing still further the benefits of the Meister high-performance tools, especially in fine abrasive grit sizes from 500-1500 mesh.

The result – stock-removal rates which compare favourably with far coarser grits, combined with much finer surface qualities, while the greatly increased dressing intervals give an added boost to cost-effectiveness.

For very small abrasive grit sizes therefore, this new development in bond technology offers unequalled:

  • Pore volumes
  • Reductions in cutting forces
  • Stock-removal rates
  • Improvements in component geometry
  • Dressing intervals

The company's technological approach is based on the use of strength-enhancing synthetic raw materials which improve the bond's toughness and the grit retention forces.

Although aimed primarily at applications using very fine CBN grits, the technology is also basically suitable for coarser grit sizes.

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HPC Bond; highly porous structure SEM image


The cDD technology with its reinforced edges allows path-controlled dressing of very complex shapes to very close tolerances. These properties combined with the option of multiple re-contouring contribute to a significant reduction in overall process costs.

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rotating cDD dresser


stationary cDD dresser


SEM picture cDD


Anatomy of a Hybrid Dressing Tool


If a CBN (internal) abrasive tool is needed for very low abrasive pressures, then the surface structure must be dressed accordingly. The creation of an open structure, optimum grit projection and outstanding stock-removal properties is determined largely by its system partner, the dressing tool.

It is here where we find the ideal application for vitrified dressing tools. Following decades of experience in the development of vitrified bond systems, Meister has created an optimum range of vitrified vDD tools ("vitrified Diamond Dressers") specifically for dressing purposes.

The bonds which can be used for vitrified diamond tools consist mainly of a group of metal oxides, similar to the CBN-capable bond systems. However the characteristic poor affinity of the diamond with the oxidic ceramic bonds means that the conditions for adequate wetting by the bond/glass melt are much more complex.

For the purpose of vDD technology therefore, grit adhesion has been optimised with a thoughtful selection of synthetic metal oxides and the introduction of a low-temperature consolidation process to the point where the diamond crystal qualities that are needed for successful dressing processes can be wetted and bonded.

The wear resistance of modern vitrified dressing tools allows the precision shaping of abrasive wheel geometries provided there is a straight line contact between the two systems.

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vDD dresser on a UVA machine

structure vDD dresser

Vit-Technology CBN and Diamond

Vit-CBN abrasive tools have been used successfully for around 25 years and with a steadily growing share of the market. The key to the success of this by now most important bond system for CBN is in the outstanding abrasive properties of these largely porous structures, its controlled receptiveness to contouring and dressing and the high stock-removal volumes which its good wear properties can achieve.

Meister has developed all of the ceramic bond systems for CBN and diamond in-house since the 1980's, a long tradition that will ensure its further development and worldwide technological leadership going forward.

The structure of the vitrified abrasive wheel can be classically characterised in a ternary system by the following elements:

  • the abrasive (or its chemical and physical properties)
  • the bond
  • the resulting microstructure

The available grades of CBN crystals offer a wide range of cutting properties and are selected for specific applications.

Vitrified bonds are usually made from frits, feldspar, kaolin and different clays. The vitrified bonds mostly contain the following cations: Al3+, Fe 3+,Ti4+, Ca2+, Mg2+, K+ and Na+ and less commonly, Li+. Modern bond systems are lead-free for health and applications reasons.

Their chemical and physical properties are determined ultimately by the combination of raw materials, the grit sizes that are used and the firing cycle, i.e. vitrification.

The microstructure is a function of the relative proportions of the abrasive grits (usually with a secondary grit in the case of CBN/diamond), bond content and residual pore volume, and is an essential precondition for an efficient tool.

The HPB, HPC and HPL technologies are further developments of vitrified bonding technology.

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