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Germany |
Hunger Maschinen |
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Offer Profile
The production line of
Hunger Maschinen GmbH ranges from single items such as rotary distributors
and actuators, pressure transducers and valves to hydraulic power packs.
The production program is further complemented by a range of spherical plain
bearings and rod eyes in standard and maintenance free designs for hydraulic
cylinders and other applications.
Optimum performance, low maintenance as well as long service life are well
known qualities of our products.
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Product Line Up
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Hydraulic Power Packs and Complete Hydraulic Systems
As manufacturer of hydraulic power units the Hunger
Maschinen GmbH supplies complete system solutions for all cases of
application in the hydraulic field.
The range of products offered covers pressures from 50 to 400 bar and a flow
rate of up to 5000 l.
The plants can be set up to use all the usual media employed in hydraulics.
These hydraulic plants have proven their worth especially in civil
engineering as well as in the iron, steel and aluminum industry.
We design and manufacture hydraulic systems according to customer's
specification of any size and for the most various fileds of application!
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Hydraulic Plants for Steel Construction in Hydraulic
Engineering
From 2005 through 2006 Hunger Maschinen GmbH (through
company Hans Künz, Austria) furnished one of the largest European
hydroelectric power plant projects by providing 7 hydraulic power packs for
7 power plant dams consisting of 3 sector gates with flap gate and 4 without
flap gate.
Aditionally, 14 control blocks for the sector cylinders as well as 6 control
blocks for the clamshell cylinders were provided by our sister company
Walter Hunger GmbH Co. KG.
The 100 year old river power station was replaced with a more modern and
efficient equipment.
The new construction enabled the average annual capacity to be tripled to
600 GWh.
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Hydraulic Plants for Open Pit Mining
In 2007, Hunger Maschinen GmbH supplied ThyssenKrupp
Fördertechnik with power units for a fully automatic coal crusher located in
Yimin He (Inner Mongolia, China).
A hydraulic drive station with a drive capacity of P = 2 x 250 kW and a
total output capacity of Q = 1050 l/min powered a crusher conveyor drive, 1
hydraulic power pack for the crusher discharge boom, 4 hydraulic power packs
for the conveyor plant, 1 hydraulic power pack for the double roll crusher,
as well as 4 control blocks for the transport crawler.
Under the most demanding climatic conditions, the plant mines approximately
3000 t coal per hour in China's northernmost open pit mine.
As a result of the double roll crushers, the plant is ideally suited to
crush loose rock and bedrock that can withstand pressures of up to 180 MPa.
In addition to coal, other minerals such as: rocks and soils, natural
stones, slags and cement clinker can be mined with this crusher.
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Hydraulic Power Units for Industrial Furnace and
Aluminium Casting Plants
For more than two decades Hunger Maschinen GmbH has been
renowned as a supplier for hydraulic systems to the aluminium sector.
Our hydraulic power packs serve as drives for vertical casting plants with
tilting frames, for casting and melting furnace technology, aluminium pusher
furnaces, charging machines and other casting plants which are employed
world-wide in the metal working industry.
We engineer, design and manufacture custom-made solutions for up to 120 t
casting weight.
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Rotary Distributors in Standard and Custom-made Designs
Another important component in our product range are
hydraulic rotary distributors for use with different liquid and gaseous
media.
Components can be designed and produced with up to 44 channels and for
operating pressures up to 400 bar on customer's specification.
The rotary distributors are equipped with special seals of Hunger DFE GmbH
for hydraulic oil, grease, gas, water and other operating media.
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One- or Multi-port Rotary Distributors
The rotary distributors for company Rekofa are mainly
used in automobile cranes, vehicle platforms,
fire fighting vehicles, agitating machines,
step positioners, revolving tables and special machines in connection with
slip ring bodies.
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Standard Rotary Distributors 2 and 4 Channels
Operating data:
- max. pressure: 350 bar
- max. periphery speed: 1,5 m/s
Two separately arranged roller bearings provide precise guidance to the
rotor.
This four-port distributor is used where several with different media,
pressures or flows impinged lines shall be connected to a turning machine
part.
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Special Rotary Distributor 44 Channels
Rotary distributor for company ELHA for a 4-station
special machine, fitted vertically into a revolving table to control four
independently operating clamping devices.
Pressure: 300 bar
Media: Hydraulic oil
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Special Rotary Distributor 24 Channels
The rotary distributors for company Krauss-Maffei are
used in injection moulding machines to produce
so-calles multi-colour/multi-component moulds. These moulds consist of
different colours or materials and are manufactured in one operation
process.
To achieve this in one operation process, one half of the tool has to be
cycled at 120°/180° or 360°.
That means a second material is sprayed onto the first or a third onto the
second with each cycle.
Although the tool cycles forward or backward or turns over 360°, the mould
nests have to be continuously supplied with cooling water.
Pneumatically and/or hydraulically operated movements and processes have to
be carried out on the tool. In order to supply such energies to the turning
tool rotary distributors are an imperative need.
Media/Pressure:
Water / 15 bar
Hydraulic oil / 150 bar
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Special Rotary Distributor 12 Channels
Rotary distributor for a laddle turret used in a
continuous slab casting plant for company
SMS Concast, USA
Media/Pressure:
Water-Glycol / 210 bar
Argon / 210 bar
Air / 210 bar
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Special Rotary Distributor 14 Channels
Multi-channel rotary distributor for company MAN in the
pivot of the ladle turret.
The heart in the production chain from the raw steel to the rolled product
for the modern continuous casting technology.
Intermittend operation with +/- 180° swivel angle for continuous casting
operation.
Media/Pressure:
Mineral oil / 250 bar
Grease / 250 bar
Compressed air / 20 bar
Argon / 20 bar
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Special Rotary Distributor 14 Channels
Rotary distributor with double sealed ring channels and
control connections to control the seals.
Two ball bearings provide for stable and maintenance-free bearing of the
stator in the rotor.
Media/Pressure:
Mineral oil / 250 bar
Phosphate ester / 250 bar
Grease / 250 bar
Compressed air / 16 bar
Argon / 26 bar
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Rotary Actuators
For limited rotary motion at a constant torque, highly
developed single and double rack actuators for all fields of engineering are
manufactured by Hunger.
Standard and special constructions up to 190,000 Nm and 720° rotary angle
have been used successfully many years.
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Single Piston Rotary Actuator
- High torques up to 50,000 Nm
- Swivel angle up to 720° with adjustable swivel angle limit and final position damping
- Primary shaft one- or both-sided with feather keys, spline gearing or EV-gear (DIN 5480)
- Flange or foot fixture
- Rack sealing with Hunger slide ring piston seal
- Special slideway lining for maintenance-free operation
- Precise level control guaranteed through leakage free support in every position
- Device for distance or angle measuring
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Double Piston Rotary Actuator
- Double piston version designed for high torques up to 200,000 Nm
- Swivel angle up to 720° with adjustable swivel angle limit and final position damping
- Primary shaft one- or both-sided with feather keys, spline gearing or EV-gearing (DIN 5480)
- Flange or foot fixture
- Rack sealing with Hunger slide ring piston seal
- Special slideway lining for maintenance-free operation
- Integrated control unit for regulated rotation
- Device for distance or angle measuring
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Special Rotary Actuators
Our team of qualified Engineers will be at your disposal
with competent advice, offers and service for the prompt execution of and
individual solutions regarding your enquiries.
We would be glad to advise you on your specific problems and to work out
proposals in consideration of your working conditions
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Plain Bushings
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Dust and Spray Water Resistant Maintenance-free Plain
Bushings
- for radial and axial movements
- equipped with special bearing layers with PTFE or compounds
- rings made of steel, stainless steel or bronze
- shock-absorbent properties
- for high operational demands
- dimensions as per DIN 18550
- special designs available
Hunger’s maintenance-free plain bushings WGB and GB are constructed according to
DIN 18550 (DIN ISO 4379) specifications.
Instead of the sintered metals, non-ferrous metals, artificial carbon and duroplastic materials mentioned therein, the bushings are made of closed steel rings with PTFE based bearing layers.
Hunger plain bushings are designed for radial and axial movements and distinguish themselves by a particularly low friction coefficient without stick-slip effect.
Thanks to the strong bearing layer very long service lives can be achieved.
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Hydraulic Valves
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Hydraulic Valves
The range of products manufactured by Hunger Maschinen
GmbH also include special valves for hydraulic cylinders in plate or insert
design to safeguard and control pressure and for lowering brake control.
The prefill valves in nominal sizes from 100 to 400 mm in diameter are
particularly well received by our customers.
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Hydraulic Valves
Due to their good flow construction prefill valves serve
for feeding and filling the main cylinders on presses.
Because their function is similar to that of check valves they can be used
for blocking up pressure loaded press cylinders without any leakage.
The Hunger prefill valve is available in two structure shapes - as container
assembly and as case valve with flange port.
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Spherical Plain Bearings
Produced as standard are steel/steel and
maintenance-free spherical plain bearings in a range of diameters from 20 -
1000 mm.
Special bearings can be obtained in all types, sizes and material qualities
to suit the application.
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GE..H-A
Inner Ø: 20-300
Material combination: Steel/Steel
Description:
Radial spherical plain bearings with
outer ring split for mounting inner ring
- with single fractured outer ring or
- with outer ring fractured into two pieces
Held together by retaining rings or screws, bearings hardened and
superfinished.
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GE..H-A
Inner Ø: 320-1000
Material combination: Steel/Steel
Description:
Large diameter radial spherical plain
bearings for ship-building, crane boom
support bearings.
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GE..BN-A
Inner Ø: 20-320
Material combination: Steel/Steel
Description:
Same as H-A type, but with:
- extended inner ring and turned shoulder
- inner ring width = bore diameter
Installation into forks without spacer rings at full tilting angle.
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GE..B-A
Inner Ø: 20-280
Material combination: Steel/Steel
Description:
Same as H-A type, but with:
- larger sphere diameter
- wider inner ring
- larger tilting angle
- and higher load carrying capacity
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GE..HW-A
Inner Ø: 20-300
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free radial spherical plain
bearing outer ring fractured for mounting inner ring
- with single fractured outer ring or
- with outer ring fractured into two pieces
Held together by retaining rings or screws, bearing superfinished.
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GE..HW-A
Inner Ø: 320-1000
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free large diameter spherical plain bearings for ship-building
and steel engineering with shock-free loading and constant load direction.
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GE..BNW-A
Inner Ø: 20-320
Material combination: Steel/PTFE-Foil
Description:
Same as HW-A type, but with
- extended inner ring and turned shoulder
- inner ring width = bore diameter
Installation into forks without spacer rings at full tilting angle.
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GE..BW-A
Inner Ø: 20-280
Material combination: Steel/PTFE-Foil
Description:
Same as HW-A type, but with
- large sphere diameter
- wider inner ring
- larger tilting angle
- and higher load carrying capacity
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GE..HS
Inner Ø: 10-300
Material combination: Steel/GFK+ PTFE-composite
Description:
Special radial spherical plain
bearing for civil engineering
following initial greasing during assembly.
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GE..HS
Inner Ø: 320-1000
Material combination: Steel/GFK+ PTFE-composite
Description:
large spherical plain bearing
for civil engineering.
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GE..HSS
Inner Ø: 25-300
Material combination: Steel/Steel
Description:
Angular contact spherical plain bearing to take radial and axial loads of
approx. the same order dimensions as for tapered roller bearing
series 320-X DIN 720 or ISO 335.
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GE..HSW
Inner Ø: 25-300
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free angular contact
spherical plain bearing to take the radial and axial loads of approx. the
same order.
Same as HSS type in maintenance-free version for shock-free loading.
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GE..HX
Inner Ø: 20-360
Material combination: Steel/Steel
Description:
Robust axial spherical plain bearings
to withstand high shock loading.
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GE..HXW
Inner Ø: 20-360
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free axial spherical
plain bearings.
Same as HX type in maintenance-free version for shock-free loads.
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Rod Ends
Produced as standard are steel/steel and
maintenance-free rod ends in a range of diameters from 20 - 160 mm.
Special bearings can be obtained in all types, sizes and material qualities
to suit the application.
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GK..NKS
Inner Ø: 20-120
Material combination: Steel/Steel
Description:
Rod end in compact design with metric
fine female clamping thread.
Standard: Right handed
For piston rod connection on
double-acting hydraulic cylinders.
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GK..SKS
Inner Ø: 25-160
Material combination: Steel/Steel
Description:
Rod end in heavy-duty version
for higher static loads than type GK..NKS
For piston rod connection on
double-acting hydraulic cylinders.
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GK..CKS
Inner Ø: 20-160
Material combination: Steel/Steel
Description:
Rod end with dimensions according to DIN 24338 for Hunger hydraulic
cylinders according to DIN 24 554 (CETOP 160 bar).
For piston rod connection on
double-acting hydraulic cylinders.
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GK..LS
Inner Ø: 20-80
Material combination: Steel/Steel
Description:
Rod end according to
DIN ISO 12240-4, dimension
series E (table 9), light duty type.
For piston rod connection on
double-acting hydraulic cylinders.
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GK..NK
Inner Ø: 20-120
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free rod end in compact
design with metric fine female clamping thread.
Standard: Right handed
For piston rod connection on
single acting hydraulic cylinders.
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GK..SK
Inner Ø: 20-120
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free rod end in
heavy-duty design for higher static loads than type GK..NK.
Ror piston rod connection in difficult
operating conditions.
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GK..CK
Inner Ø: 20-120
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free rod end with
dimensions according to
DIN ISO 12240-1, dimension
series W (table 6).
For piston rod connection on Hunger
hydraulic cylinders according to
DIN 24554 (CETOP 160 bar).
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GK..L
Inner Ø: 20-80
Material combination: Steel/PTFE-Foil
Description:
Maintenance-free rod end according to
DIN ISO 12240-4, dimension series E
(table 1), light duty type.
For piston rod connection on
single-acting hydraulic cylinders.
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