gravostar W-20

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Field of application:

Individual markings of any workpieces

with regular, uneven or rough surfaces

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Tool specifications:

• Use in machining centres, automatic lathes, etc.
  (no additional installations required)

• Needle actuation via internal tool cooling system
  (required coolant pressure approx. 5 - 50 bar)

• Standard version with 20 mm Weldon shank

• Various HSK, SK or special tool holders (optionally available)

• Needle adapters in various extensions (optionally available)

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General information:

• Integrated, automatic distance compensation up to approx. 1 mm
  (Regular marking depth also of uneven marking surfaces)

• Extremely high resistance to wear of the hard metal marking needle

  • The needle can be easily replaced in only a few steps

• Can be used for almost all machinable materials
  (hardness up to approx. 62 HRC)

• Extremely high degree of process reliability due to easy pulse control integra-
  ted into the tool

• Very short marking time

  • Embossing frequency of the marking needle: approx.300 Hz

  • Feed speed more than 5‘000 mm/min possible

• For universal use (Weldon shank shaft with a diameter of 20 mm)

  • VDI tool holders for lathes (optionally available)

  • Various HSK, SK or special tool holders (optionally available)

Marking on steel valve 

gravostar WSRX-20

Field of application:

Sophisticated markings on any workpieces in a prescribed marking depth
(e.g. security-relevant parts in turbine construction, etc.)  

Tool specifications:

• Use in machining centres, automatic lathes, etc.
  (no additional installations required)

• Needle actuation via internal tool cooling system
  (required coolant pressure approx. 2 - 80 bar)

• Standard version with 20 mm Weldon shank

• Various HSK, SK or special tool holders (optionally available)

• Needle adapters in various extensions (optionally available)

General information:

• Integrated, automatic distance compensation up to approx. 5 mm
  (Regular marking depth also on uneven marking surfaces)

• Coolant pressure can be reduced via integrated bypass control

  • Defined adjustable marking depth

• Extremely high resistance to wear of the hard metal marking needle

  • The needle can be easily replaced in only a few steps

• Can be used for almost all machinable materials (hardness up to approx. 62 HRC)

• Extremely high degree of process reliability due to easy pulse control integrated into the tool

• Very short marking time

  • Embossing frequency of the marking needle: approx. 300 Hz

  • Feed speed of more than 5‘000 mm/min possible

• For universal use (Weldon shank shaft with a diameter of 20 mm)

  • VDI tool holders for lathes (optionally available)

  • Various HSK, SK or special tool holders (optionally available)

Marking on a turbine coop for an airplance engine, in a precisely defined marking depth

extended needle guide

Field of application:

For workpieces with limited space
(marking in depressions or near hindering edges)

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Structure and combination options:

• The following standard types of tools serve as the basis for tools with extended needle adapters:

  • W-20 (basic information: see Type W-20)

  • WS-20 (basic information: see Type WS-20)

  • WSRX-20 (basic information: see Type WSRX-20)

  • as well as all tool types with special tool holders driven via coolant

• The following extended needle adapters are available as standard with the corresponding marking needles:

  • Extension 15 mm

  • Extension 50 mm

• Further extensions also available according to particular customer requirements and upon request

Secial execution of the needle adapter unit, extended by 135 mm

gravostar special models

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Special feature:

Compact versions with integrated tool holder individually adapted to the machine, for use in smaller machines.

Designs and combination options:

• All coolant-activated versions are generally available with individual tool holders:

  • W-20 (basic information: see Type W-20)

  • WS-20 (basic information: see Type WS-20)

  • WSRX-20 (basic information: see Type WSRX-20)

• For automatic lathes, all types are available as  standard with the following tool holders:

  • VDI25

  • VDI30

Other tool holders (HSK, SK, etc.) according to customer requirements are also available upon request

gravostar Type H-20 / H-20 PP

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Field of application:

Individual markings of any workpieces

with regular, uneven or rough surfaces.

• Use in machining centres, automatic lathes, special systems etc.

• Needle actuated by compressed air

  • Compressed air supply optionally:

    • through tool spindle for automated tool change

    • with lateral compressed air hose for manual tool change

• Marking depth individually adjustable via air pressure

  • Required air pressure: 2-6 bar

• two versions available

  • Standard (H-20)

    • for normal markings

  • Special (H-20 PP) with reinforced marking needle

    • for deeper markings

    • for larger distance compensation

    • for rougher application conditions

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General information:

• Integrated, automatic distance compensation (Uniform marking depth also of uneven marking surfaces)

  • H-20: up to approx. 3 mm

  • H-20 PP: up to approx. 5 mm

• Extremely high resistance to wear of the hard metal marking needle

  • The needle can be easily replaced in only a few steps

• Can be used for almost all machinable materials (hardness up to approx. 62 HRC)

• Extremely high degree of process reliability due to easy pulse control
  integrated into the tool

• Very short marking time:

  • Embossing frequency of the marking needle: approx. 300 Hz

  • Feed speed more than 5'000 mm/min possible

• For universal use with Weldon shank shaft

  • Diameter 20 mm

  • Diameter 10 mm

• Various special tool holders (optionally available)

Photo on the right: Hardened disc (65 HRC), marked with gravostar H-20