Demag DH Hiost cranes
DEMAG Cranes Components
Demag DH hoist units
State-of-the-art system modules for mechanical and plant engineering
Hoists - we speak with experience
Lifting, conveying, drivíng, positioning, dístributing, storing these are the tasks Demag
Cranes Components has concentrated on for more than 180 years. We have initíated
signifícant new developments, realised new technologies and considerably furthered
progress with materials handling solutions.
lnnovatíon and performance have made us the leading world manufacturer offering the
most comprehensive range of products in the índustry. Hoists have been a part of our range sínce we launched the first steam-driven crane at the 1873 Wor1d Exhibition ín Víenna. With z46 ever new improvements, they have not only become indispensable in the crane sector, but are now also valuable components used ín many other fields for a wíde variety of applícatíons in theatres and above stages, ín load lifts, on industrial furnaces, mining equipment, in aircraft maintenance systems, in refuse incíneration facilíties ...
Demag DH hoist units combine our extensive expeгіeпce wíth state-of-the-art technology
and modern, functional design. They are of consístent modular construction and are based oп perfectly matched components of outstanding quality whích are manufactured in series.
Our hoísts are the optímum basis for solutions taílored to meet your needs wíth a maximum of safety and reliabilíty.
Demag DH hoist units giving you the certainty of signifícant benefits
Design ínnovatíons acknowledged by make Demag DH hoist uníts the most numerous patents , the incorporation of advanced system modules for optimum mkroelectronics, the use of new, wear- solutíons ín the mechanical and plant resistant materíals;and maximum precísionengineering sectors.
with state-of-the- t manufacturing methods
Addítíonal emergency brake or holdíng brake.
acting dírectly oп the rope drum.
Made of tough, flexible and low-fríctíon plastic with low-wear qualíties.
Hardened pressure rollers mounted oii ball bearings.
Bottom blocks with rope sheaves of fine perlíte materíal wíth uníform
hardness for a longer workíng life. Hígh handling safety due to favourable гope openíng and improved grip for operators.
síngle and multí-sheave bottom blocks dependíng on the reevíng arrangement. All bottom blocks with load hooks to DIN 15 401.
Whatever you are planníng and buildíng minimum maíntenance, wíth our hoists you can ímplement a гelіable convenient operatíon, solution to meet your needs without any reliable functíon monitoring, problems and set newstandards for liftíng, low dead weíght,
conveying, transferríng, towing, holdíng and compact desígn,posítíoníng thanks to . simple integratíon ìn automatic facilitíes, energy savíng uníts, desígn whích complíes wíth national and internatíonal engíneering standards.
Demag slidíng-rotor motor with integrated conical brake; high brakíng capac ty and reliable braking wíthout any control devices on switch or in the event of a power failure; asbestosfree brake liníngs.
Demag planetary gearbox, working oп the free-floating principle;
hígh efficiency, low-noise operation, lubricated for lífe.
Pole-changíng creep speed gívíng 1:6 and 1:4 ratiox; separate creep speed motor giving a ratio of 1:10 oг more for hígh starting frequencíes, three or four For maxímum dynamics. re1iab1e brakíng and speeds when combined with a pole changing the outstanding positionIng characterístícs of main hoist motor. Up to 12 motor type5 for each the Demáý`brake motor; permits infinítely hoist síze squírrel-cage motors, slip-ring motors, variab1e speed control.
Dc motors, explosíon-proof motors.
Long service lífe and high safety levels due to load and power dístribution. The load in each stage of the gearbox is borne by three teeth at any one time.
Low rolling speeds; case-hardened and ground gear wheels; connected to the motor via a torsionally and axially flexible roller coupling.
statíonary or travelling hoists to move your loads
Demag DH hoist units can be integrated ínto Dírect connection for Demag DH hoíst units
líft stations, towing winches and many other The two foot-mountíng appliances oг made up into traveIling hoìst flanges of the square frame design enable DH floísts to
uníts with a variety of trolleys. Ьe símply mounted on any of the four sídes. Rope lead-
off in vírtually any dírectíon The trolleys are fitted with travel wheels made ı suits all applicatíons.
of spheroídal graphite cast iron GGG 70
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Demag Crane Systems: Advanced Hoisting and Control Features
Vibration Damping and Low-Noise Operation
High Inherent Vibration Damping
The monorail hoist wheels in Demag cranes are designed with materials that offer excellent vibration damping properties. This results in low-noise operation, making them ideal for environments where noise levels are a concern. The damping effect also helps in reducing wear and tear on the crane system, extending its service life.
Self-Lubricating Wheels
The spheroidal graphite incorporated into the wheel material reduces friction, preventing excessive wear while improving the overall lifespan of the crane system. This feature ensures smoother and quieter operation, making it particularly effective for industries where noise control is a priority.
Optimized Load Distribution
The special travel wheel design ensures that wheel contact forces are transmitted closer to the center of the runway girder, optimizing load distribution and ensuring that the crane operates more efficiently and safely.
Low-Headroom Hoists
EKDH Low-Headroom Monorail Hoist
Demag offers an EKDH low-headroom hoist designed to maximize the available headroom. This system is particularly useful for operations with limited vertical space and provides a cost-effective solution for monorails and single-girder cranes. The travel wheel design allows for smooth starting and braking, reducing load sway and ensuring precise positioning.
EKDH Low-Headroom Monorail Hoist without Counterweight
This innovative hoist eliminates the need for a counterweight by incorporating a friction wheel travel drive integrated into the trolley, making it ideal for loads up to 5 tons. This design simplifies the system and reduces maintenance costs.
Articulated Monorail Hoists
EUDDH Standard-Headroom Articulated Monorail Hoist
The articulated trolley enables the hoist to handle curves with radii down to 800 mm, making it ideal for navigating tracks with tight turns. This system can also be configured as a double trolley for handling heavier loads, up to 25 tons.
EKDDH Low-Headroom Articulated Monorail Hoist
This version offers optimum dimensions and excellent curve-negotiating characteristics, making it suitable for suspension monorail systems with multiple branches. It can navigate track switches, allowing for smooth transitions between tracks and reducing the need for manual intervention.
Double-Rail Crabs for Higher Loads
EZDH Double-Rail Crab
Designed for double-girder cranes, the EZDH crab ensures the optimum utilization of available space due to its low-headroom design. It is tailored for higher load capacities and features favorable approach dimensions, providing flexibility and efficiency in crane operations.
EZLDH Double-Rail Crab
This version focuses on symmetric load distribution across crane girders, ensuring optimal crane girder dimensions. This design helps maximize the efficiency and durability of the crane system, especially for higher load requirements.
Electrical and Electronic Control Systems
DG5 Precision Geared Limit Switch
For precise control, the DG5 limit switch ensures reliable motor cut-outs at the top and bottom hook positions. The infinitely variable adjustment allows for highly accurate switching points, which can be set with a repeat accuracy of ±2% of the drum circumference. This system can also include a pulse generator for automatic angle and speed detection during lifting operations.
Infrared Transmitters
Demag offers infrared transmitters with up to 7 x 2 pulse generators. These are used for controlling 3 motion axes with 2 speeds each. These systems provide precise motion control in complex crane operations and are compatible with special function keys for switchover functionalities.
Radio and Infrared Control Systems
Demag RC-10 Radio Control
The RC-10 radio control system is designed for hoists, cranes, and other machinery, allowing for operation at relatively large distances. It ensures interference-free transmission even in environments with large loads and obstacles. The frequency-variable operation allows the system to adapt to different environments and requirements.
Dematik IR Infrared Control System
Ideal for mobile control of hoist units, this system allows for precise control of lifting and travel drives with up to 100 m range. The system features signal address coding, which allows for simultaneous operation of up to 32 transmitters in an enclosed area without mutual interference.
Pendant Control Systems
5E Control Pendant Switch
The 5E pendant switch is ergonomically designed, allowing operators to work in a natural position and reduce fatigue. The switch is compliant with BGV D6, VBG 9, and ZH 1/2 safety standards, ensuring safe and efficient crane operation.
Ergonomic Features
The 5E pendant features a strain relief and is equipped with up to 16 switching elements, which control hoist lifting, travel drives, and other crane motions. The design focuses on reducing operator fatigue and ensuring ease of use during extended operations.
Safety and Compliance
Protective Insulation to VDE 0100
Demag cranes are designed with protective insulation to comply with VDE 0100 standards, ensuring electrical safety during operation. The retention force is < 8 N, with an IP 65 enclosure, providing reliable protection against dust and water ingress.
State-of-the-Art Technology
All electrical and electronic equipment used in Demag cranes meets the highest standards in terms of safety and functionality. Demag ensures that their cranes adhere to all national and international safety regulations, making them ideal for operations requiring the highest level of reliability and safety.
Summary
Demag's crane systems offer advanced solutions for various lifting and hoisting needs, incorporating innovative features such as low-headroom designs, articulated trolleys, and precise control systems. These systems are designed to provide optimal load distribution, reliable performance, and maximum efficiency while maintaining safety and ease of operation. Whether you require low-noise operation, symmetric load distribution, or advanced electronic controls, Demag's extensive range of hoisting and crane systems meets the demands of modern industries.
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This material has a high inherent vibration damping effect, is particularly gentle on the runway, and offers low-noise running characteristics. The self-lubricating effect of the spheroidal graphite incorporated in the monorail hoist wheel material reduces friction and provides high resistance to wear. Due to the special travel wheel design, the wheel contact forces are transmitted close to the center of the runway girder for optimum load distribution characteristics. The wheels feature generously dimensioned anti-friction bearings which guarantee a long service life.
EKDH Low-Headroom Monorail Hoist
The ideal solution for optimum utilization of the available headroom and particularly favorable loads to be transported with a minimum of hook-up dimensions. The travel motors are designed for smooth starting and gentle braking, thus allowing loads to be transported with minimal sway, and the required positions can be approached quickly and exactly.
EKDH Low-Headroom Monorail Hoist without Counterweight
A newly developed traveling hoist featuring a friction wheel travel drive integrated into the trolley which requires no counterweight, suitable for loads up to 5 tons.
EUDDH Standard-Headroom Articulated Monorail Hoist
Articulated trolleys enable the traveling hoist to negotiate curves with radii down to 800 mm. Also available as double trolleys for loads weighing up to 25 tons.
EKDDH Low-Headroom Articulated Monorail Hoist
Optimum dimensions and outstanding curve-negotiating characteristics make this the ideal solution for suspension monorails. A lowered version can travel through track switches for suspension monorail systems with many branches.
EZDH Double-Rail Crab
For higher loads on double-girder cranes; optimum utilization of the available space thanks to the low-headroom design and favorable approach dimensions.
EZLDH Double-Rail Crab
Symmetric load distribution on the crane girders for optimum crane girder dimensions.
Electrical and Electronic Equipment Connection to State-of-the-Art Technology
The electrical and electronic equipment featured in Demag DH hoist units meet the most demanding requirements in terms of safety and functionality with numerous standard and optional components.
DG5 Precision Geared Limit Switch
For reliable motor cut-out at the top and bottom hook positions; with switching elements for additional operating points or as protection against phase reversal. Infinitely variable adjustment of the switching points with a repeat accuracy of ±2% of the drum circumference. Optionally with a pulse generator and electronic evaluation unit for automatic angle and path detection and speed measurement for lifting operations; fitting later date also possible, pulse wheel as standard. The geared limit switch requires no maintenance; simple, exact, and infinitely variable setting of all switching points.
Various infrared transmitters with up to 7 x 2 pulse generators, and two-stage buttons can be used depending on the type and quantity of drives to be controlled. The transmitter features 10 keys suitable for controlling 3 motion axes with 2 speeds each; 2 special function keys for switchover functions are also available.
Demag RC-10 Radio Control
For controlling hoists and cranes as well as machinery, distribution carriages, etc., also at comparatively large distances. Reliable operation even when there are large loads, building elements, and similar obstructions between the transmitter and receiver; interference-free transmission and receipt of signals even in built-up areas thanks to frequency-variable operation. Range approx. 100 m; compliant with VBG 9, Signal 1/547, and prEN 12077-1. Address coding for simultaneous operation of up to 32 transmitters in an enclosed area without mutual interference.
5E Control Pendant Switch
Control pendants connected to the hoist lifting and travel drives and other drives. The ergonomic housing design permits operators to work in a natural position, reducing fatigue. The transmitter range is up to approx. 40 m with strain relief, up to 16 openings. Features are compliant with BGV D6, VBG 9, and ZH 1/2 safety standards.
Protective insulation to VDE 0100, retention force < 8 N; IP65 enclosure.
Project engineering sheet
Demag DH hoists
01 295 271 408
Please send a quote to
Company
Demag Cranes Components Ltd.
DH Product Promotion Box/Road
Beaumont Road,
Banbury, Oxoп OX16 1 QZ Town or city/Post code
Telephone 01295 676100
Contact
Load capacity kg Hoist and trolley desígn
FEM Group íf known FEM 5tationary hoist unit Yes No
Standard-headroom monorail ho is t Yes No
Low-headroom monoraiI hoist Yes No
If you do not know the FEM Group, please specify
the type of applïcation workshop, productíon or similar Travel girder profíle flange width
Actual operating time of Double-rail crab: Track gauge mm
the hoist per day
hours
Travel speed m/min
Lifting height m
Creep travel speed Yes No
Hoist speed m/min
Electrícal equípment
Creep lifting by means of a
pole-changing hoist motor Yes No Operatíng voltage V Hz
Creep lifting by means of a Contactor control Yes No
separate hoist motor Yes No
Control voltage V Hz
lnfinitely variable lifting speed
by means of an inverter Yes No Options: Remote contro1 Yes No
Cabín control Yes No
special ambient operatíng conditions operation indoors or outdóors, ambient
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EG Integrated Pulse Generator
Integrated into hoist and travel drive motors, it generates 30 rectangular pulse signals per revolution, which are passed on to the evaluation electronics in the form of two signal chains with a pulse gap ratio of 1:1 and electrically displaced by 90° for measuring paths and speeds with detection of the direction of rotation.
It can be used together with the frequency inverter with the ProHub function to provide cost-effective drive solutions that move partial loads at high speed and rated loads at normal speed.
Load Detectors
Two load measuring systems are available, depending on requirements:
Mechanical load measurement by an overload protector with microswitches and an electronic comparator for overload protection and overload cut-off. This solution provides setpoint load limitation.
Intelligent power electronic load measurement by a carrier management link with strain gauge bridge, frequency evaluator for overload protection and overload cut-off. Load indication via an LED display in the D5E control pendant or cabin, or on a large-format display.
Load Detectors with Electronic Comparator and Load Spectrum Recorder
For load monitoring and determining the optimum time for preventive maintenance measures.
Rope Reeving Components
Key components of Demag DH can be configured to meet almost any requirement with a large variety of options and possible arrangements.
F-type Rope Guide
Made from wear-resistant plastic, minimizing wear, and can be replaced without the need for dismantling. Sure rollers mounted on anti-friction bearings ensure particularly smooth rope guiding, even during inclined pulls. Rope guide outlet for a fleet angle of 4° is available for applications in demanding environments.
S-type Rope Guide
For medium inclined pull on single-groove drums.
Double Rope Guide
For heavy-duty operation to handle rate requirements. Essential for double-groove hoists in extreme loading situations resulting from swinging loads. Rope guide elements are automatically adjusted directly below the rope lead to ensure the ropes are wound perpendicularly to the drum when they travel in the same direction.
Coupled Hoist Units with Exact Simultaneous Operation
A cost-effective solution for spreader operations and handling long materials; provides exact simultaneous operation, even for large distances between ropes. Designed as a modular hoist unit system for two and four-point rope suspensions, it can be combined with all options. Universal joint shaft connection for simple installation and compensation of any misalignment.
Coaxially Coupled Hoist Unit, Type GK
Rope Drums
Made of high-tensile steel with up to eight grooves; double-groove design without any hook travel; rope lead-off in any direction. Centrally driven by a multi-splined connecting shaft. Low-maintenance drum bearing with sealed roller bearings and a large patented bearing at the motor end. Various drum lengths for lifting heights up to 104 meters.
Hoist Ropes
Long service life and high safety and reliability, ropes dimensioned to FEM. For special applications: high-strength and high-density ropes to increase hook paths by up to 25%. Various drum lengths make it possible to achieve lifting heights up to 104 meters. Rope drums are available with one, two, four, six, and eight grooves. The rope can lead off in any direction.
Demag DH Hoists at the Click of a Button
With our design tools, parts catalog, and Demag DH hoist unit price list on diskette and CD-ROM, Demag Cranes Components enable you to incorporate our DH hoist units into your designs in AutoCAD and select properties, and order hoists or spare parts with all the convenience you can expect today.
No more lists, no more searching through pages of catalogues. Supported by an interactive user interface and an optimum display configuration, you can simply click to select all the information you require and specify your hoist. You can also call up part numbers and prices just as easily.
File Configuration
In addition, our SWP Safe Working Period program is a valuable tool to help you meet the provisions of EC Directive 98/37 EC and the related accident prevention regulations which are based on it.
Hoist without Motor
Electronic Catalogue DH
File Select Parts List Standards Special Info
Please select the appropriate items for your hoist:
DH 165
Hook Path: H9
Motor Type: K (Käfigläufer)
Hoist Speed: V2
Reeving: 2/1
Creep Lifting: F4
Demag DH Hoist Units: You Have the Choice
From 500 kg to 100,000 kg, with lifting speeds of up to 36 m/min.
Selection Criteria
Explanation of Size Designations
The size of the hoist is determined by the load spectrum, average operating time, SWL (Safe Working Load), and reeving.
Example: EU DH 525 H1ι K V7 - 4/1 F6 300 12.5
1. What are the operating conditions?
Traveling speed (m/min)
2. What is the specified Safe Working Load (SWL)?
Flange width of the girder (mm)
3. To what height must the load be lifted?
F6 Creep lifting 1:6, DH pole-changing
4. What is the required lifting speed?
F4 Creep lifting 1:4, DH 160/200 pole-changing
5. Do the loads need to be lifted and lowered with great accuracy?
F10 Creep lifting 1:10, DH microspeed unit
6. Is horizontal load travel necessary?
Single-groove drum
7. How is the hoist to be controlled?
Four-fall reeving
Lifting Speeds
Motor type: K = Squirrel-cage
Important: S = Slip-ring rotor
DH hoist unit with pole-changing motor
G = DC motor
Main lifting speed = 80 starts per hour
Creep lifting speed = 160 starts per hour
Hook path: 12 m for 2/1 reeving
Rope pull on the drum: 25 kN
DH Hoist Unit with Mechanical Microspeed Unit - Size 525
Main lifting speed = 240 starts per hour
Creep lifting speed = 240 starts per hour
Demag hoist unit model DH
O = Monorail hoist
K = Low-headroom monorail hoist
Z = Double-rail crab
E = Electric travel trolley
R = Push travel trolley
Load capacity: 5000 kg
Load spectrum: Light (from table)
The average operating time per working day is estimated or calculated as follows:
Main lifting speed: 8 m/min
Creep lifting speed: 0 P (peak) or per minute (depending on unit)
Hook path: 4 m
Cycles per hour: 20
Example Calculation
For a light load spectrum and an average daily operating time of 8 hours, the table indicates the hoist size DH 525.
Load Spectrum
The load spectrum is determined based on the operating time and load spectrum. It is categorized as follows:
Light Load
Heavy Load
Extreme Load
For each hoist, the optimum arrangement is chosen to cater for heavy loads and extreme lifting heights. This includes rope drums with one, two, or four grooves. The hook is centered on the two-groove variant. Hook paths are designed for lead-off in virtually any direction.
1:6 Main/Creep lifting speed: Achieved with a 2/1 pole motor
SWL Reeving: 4/1
Lifting speed: 1.2 m/min
Creep lifting speed: 1:10
Other creep lifting speeds are available upon request.
Example:
For DH 160/200, the 1:6 main creep lifting speed is achieved with a pole-changing motor.
FEM Lifting Speeds: 1/1 and 2/2 are available on request.
DH 600 Hoist Units with Hook Paths H40 and H52
Available only in flange-mounted design.
DH 165 M6 6:7/
EU DH, EKDH monorail traveling hoist units and EZHD, EZLD double-rail crabs available on request.
