All Round Performance

Powerful abrasives specially designed for external cylindrical grinding

Due to this technique's advantages, these days it is difficult to imagine industrial machining without external cylindrical grinding. The external cylindrical grinding process is used for precision-grinding and polishing of redationally symmetrical parts. 

Its chief area of application extends from the centreless external cylindrical grinding of stainless steel pipes in a continuous process to the external cylindrical grinding between centres of piston rods with subsequent superfinishing, and also covers the external cylindrical grinding of high-alloyed stainless steel wires.

Especially for external cylindrical grinding Hermes abrasives are bringing benefits you'll appreciate:

  • Belt grinding processes offer a lot of different surface qualities 
  • High stock removal rates without high tool wear
  • Long tool live 
  • Similar stock removal rates in comparison to turning processes
  • Highest consistent surface qualities up to Ra > 0.1 µm
  • Flexible machining process due to quick change of types and grits
  • Cost-effective machining process due to low machine and tool costs

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Brochure "All Round Performance - The complete Hermes program for external cylindrical grinding" (PDF file; file size: 2.0 MB)

Our product range for your applications

Initial grinding

Pure performance – Hermes initial grinding belts

Initial grinding tackles coarse surfaces, weld seams and flaws in the material's surface. Possible flaws include scratches, scores, cracks, markings, oxidation, geometrical defor-mation and impurities.

Coarse grit sizes (24 to 80) are primarily used for initial grinding. One of the most impressive features of Hermes initial grinding belts is their extreme grain sharpness and high removal rates.

All products boast sturdy backing and can be used for both dry and wet-grinding (resistant to water, emulsion and oil).

Our product range for your applications

RB 377 YX

Picture Hermes grinding belt RB 377 YX
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Strong aluminum oxide abrasive belt, recommended for grinding small batch sizes.

RB 484 44 Z

Picture Hermes grinding belt RB 484 44 Z
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High-performance zirconia alumina abrasive belt, especially suitable for initial grinding stainless steel

CERAMIT CR 456 Z

Picture Hermes grinding belt CERAMIT CR 456 Z
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High-performance ceramic grain abrasive belt, especially suitable for initial grinding wet or dry at low grinding pressures corrision and acid-resistant steel and titanium and nickel alloys

HERMESIT RB 535 Y

Picture Hermes grinding belt HERMESIT RB 535 Y
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Particularly durable HERMESIT aluminum oxide abrasive belt for producing satin surfaces ("HERMESIT-Finish") at medium grinding pressures, especially suitable for initial grinding steel, stainless steel and high-alloyed steel

HERMESIT RB 545 Y

Picture Hermes grinding belt HERMESIT RB 545 Y
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Particularly durable HERMESIT silicon carbide abrasive belt for producing brilliant shining surfaces ("HERMESIT-Finish") at medium grinding pressures, especially suitable for initial grinding and descaling steel, stainless steel, high-alloyed steel and titanium

Intermediate Grinding

MERCURIT and HERMESIT longlife grinding belts for cost-efficient intermediate grinding

Intermediate grinding is used to further smooth initially ground surfaces. For this purpose, grinding belts in the medium to fine grit range (80 to 1200) are employed. The special three-dimensional structure of the abrasive grain of MERCURIT® and HERMESIT® longlife grinding belts keeps

surface structures and roughness depths constant throughout the belts' life. In fact, they last 3 to 5 times longer than conventional grinding belts and increases the economic efficiency significantly.

Our product range for your applications

MERCURIT RB 590 Y

Picture Hermes grinding belt MERCURIT RB 590 Y
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Special development for cylindrical grinding – abrasive belt with aluminium oxide agglomerate grain for producing satin surfaces and with a much longer tool life in comparison to conventional abrasive belts at high grinding pressures.

MERCURIT RB 591 Y

Picture Hermes grinding belt MERCURIT RB 591 Y
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Special grinding belt for cylindrical grinding with aluminium oxide agglomerate grain for producing satin surfaces and with a much longer tool life in comparison to conventional grinding belts at medium grinding pressures. Especially suitable for pre-grinding before chroming.

MERCURIT RB 595 Y

Picture Hermes grinding belt MERCURT RB 595 Y
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High-performance grinding belt with silicion carbide agglomerate grain for pre-grinding and intermediate grinding of hard to grind materials (e.g. “SUPERDUPLEX” stainless steel, titanium, scale layers).

HERMESIT RB 535 X

Picture Hermes grinding belt HERMESIT RB 535 X
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Particularly long-life HERMESIT Aluminium oxide abrasive belt for producing satin surfaces ("HERMESIT-Finish") at low grinding pressures, especially suitable for grinding steel, stainless steel and high-alloyed steel.

HERMESIT RB 545 X

Picture Hermes grinding belt HERMESIT RB 545 X
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Particularly longlife HERMESIT Silicon carbide abrasive belt for producing brilliant shining surfaces ("HERMESIT-Finish") at low grinding pressures, especially suitable for grinding steel, stainless steel and high-alloyed steel and titanium.

HERMESIT RB 535 Y

Picture Hermes grinding belt HERMESIT RB 535 Y
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Particularly longlife HERMESIT Aluminium oxide abrasive belt for producing satin surfaces ("HERMESIT-Finish") at medium grinding pressures, especially suitable for grinding steel, stainless steel and high-alloyed steel.

HERMESIT RB 545 Y

Picture Hermes grinding belt HERMESIT RB 545 Y
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Particularly longlife HERMESIT Silicon carbide abrasive belt for producing brilliant shining surfaces ("HERMESIT-Finish") at medium grinding pressures, especially suitable for grinding steel, stainless steel and high-alloyed steel and titanium.

Finishing

Brilliant results – Finishing with Hermes abrasives

Ultra-fine surfaces with defined roughness depths are a prerequisite for the production of satin, high gloss or “mirror-finish” surfaces, or as preparation for subsequent processes such as galvanizing and anodizing. Hermes offers numerous quality abrasives specifically for these machining operations: MERCURIT and cork polishing belts, webrax non-woven web polishing belts or flap discs, FB 637 superfinish abrasive film rolls and microlite polishing wheels.

Finishing with MERCURIT and Cork polishing belts

MERCURIT RB 598 Y

Picture Hermes grinding belt MERCURIT RB 598 Y
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Special development for finishing and polishing cylindrical workpieces – silicon carbide agglomerate abrasive belt for producing brilliant shining surfaces with consistent stock removal rates, especially suitable for low to medium grinding pressures.

Cork RB 515 X

Picture Hermes grinding belt Cork RB 515 X
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Cork/Silicon carbide abrasive with elastic cork particles for a "cushioned" grinding, especially suitable for producing high-polish or "mirror-finish" surfaces with a fine-structured pattern.

Cork RB 515 Y

Picture Hermes grinding belt Cork RB 515 Y
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Particularly tear-resistant Cork/Silicon carbide abrasive belt with elastic cork particles for a "cushioned" grinding, especially suitable for producing high-polish or "mirror-finish" surfaces with a fine-structured pattern at high belt tensions.

Cork RB 525 X

Picture Hermes grinding belt Cork RB 525 X
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Cork/Aluminium oxide abrasive belt with elastic cork particles for a "cushioned" grinding, especially suitable for producing satin surfaces with a fine-structured pattern.

Special finishing with webrax non-woven web polishing tools

webrax non-woven web grinding belts

webrax non-woven web belts are made from special fibre web combined with a cloth backing. The grain is embedded firmly in the web with binding agent and is therefore extremely tough and durable.

These belts are universal and suitable for dry and wet-grinding (resistant to water, emulsion and oil).

Convolutely wrapped webrax non-woven web wheels

Convolutely wrapped webrax non-woven Web wheelsThanks to their excellent plybond strength, convolutely wrapped webrax non-woven web wheels produce an optimum web finish. These wheels are universal and suitable for dry and wet-grinding (resistant to water, emulsion and oil).

webrax-AN 702

Picture Hermes grinding belt webrax-AN 702
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Compact aluminum oxide non-woven web belt, reinforced with cloth, for producing very fine grinding pattern on stainless steel surfaces. Especially suitable for polishing after chroming.

webrax-AN 701 50

Picture Hermes grinding belt webrax-AN 701 50, blau (Körnung + 280)
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Very compact aluminum oxide/silicon carbide non-woven web belt, reinforced with cloth, for structure grinding stainless steel surfaces.

webrax-OA 710 GWS

Picture webrax-OA 710 GWS
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Convolutely wrapped aluminum oxide webrax non-woven web wheels for producing satin surfaces.

webrax-OS 715 GWS

Picture webrax-OS 715 GWS
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Convolutely wrapped silicon carbide webrax non-woven web wheels for producing brilliant shining surfaces with a finer surface structure in comparison to aluminum oxide wheels

Superfinishing with Hermes abrasive film

The process known as “superfinishing” or “microfinishing” is used for the ultra-fine polishing of pressure cylinders, rolls, bearing points on shafts, and similar items.

The grinding film is pressed against the redating, initially ground workpiece in a high-frequency, oscillating transverse motion. Using Hermes grinding films for the micro-grain range down to P 2500/9µm, this technique is able to produce high-precision functional surfaces with constant, low surface characteristics.

Wire-grinding

Hermes high-performance grinding belts for cost-efficient wire grinding

A special type of external cylindrical grinding is the grinding of wire on so-called planetary head grinding machines, whereby one or two grinding units per grinding station redate around the wire during the grinding process. 

The advantages of the cutting wire-grinding process over electrochemical methods such as etching, and also over other cutting techniques such as draw-peeling or turning, are especially evident when descaling and removing microcracks in the wire surface.  

To ensure the required long tool life whilst simultaneously achieving constant surfaces, Hermes offers suitable abrasives in the form of high-performance grinding belts with zirconia alumina grain and longlife grinding belts with MERCURIT agglomerate or Hermesit abrasive grain.

Our product range for your applications

RB 484 44

Picture Hermes grinding belt RB 484 44
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High-performance zirconia alumina abrasive belt, especially suitable for initial grinding stainless steel.

MERCURIT RB 590 Y

Picture Hermes grinding belt MERCURIT RB 590 Y
Further Information by a mouse click

Special development for cylindrical grinding – abrasive belt with aluminium oxide agglomerate grain for producing satin surfaces and with a much longer tool life in comparison to conventional abrasive belts at high grinding pressures.

MERCURIT RB 595 Y

Picture Hermes grinding belt MERCURIT RB 595 Y
Further Information by a mouse click

High-performance grinding belt with silicion carbide agglomerate grain for pre-grinding and intermediate grinding of hard to grind materials (e.g.  titanium, scale layers).

HERMESIT RB 535 Y

Picture Hermes grinding belt HERMESIT RB 535 Y
Further Information by a mouse click

Particularly longlife HERMESIT aluminum oxide abrasive belt for producing satin surfaces ("HERMESIT-Finish") at medium grinding pressures, especially suitable for grinding steel, stainless steel and high-alloyed steel

HERMESIT RB 545 Y

Picture Hermes grinding belt HERMESIT RB 545 Y
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Particularly longlife HERMESIT Silicon carbide abrasive belt for producing brilliant shining surfaces ("HERMESIT-Finish") at medium grinding pressures, especially suitable for grinding steel, stainless steel and high-alloyed steel and titanium.

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