
gravostar W-20
Field of application:
Individual markings of any workpieces
with regular, uneven or rough surfaces
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)
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 WS-20
Field of application:
Individual markings of any workpieces
with larger irregularities and dimensional differences such as on raw cast parts.
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 - 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)
General information:
-
Integrated, automatic distance compensation up to approx. 5 mm
(Uniform marking depth also on 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 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 (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)
-
seamless marking from machined to raw marking surface on cast aluminium gear plate

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)
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
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
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
-
-
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


