Demag DH. The hoist unit.
More than lifting
Demag DH. The hoist unit: Beyond classic crane applications
Demag DH hoist units can be used in a wide variety of applications, both as travelling hoists on cranes or monorails and as stationary solutions. These powerful hoist units offer a number of special technical features that enable loads to be handled reliably even under demanding requirements. More than lifting: Installed as stationary or travelling units, they are more than just hoists – thanks to gentle handling with high load capacities up to 100 tons and flexible integration into almost any design.
Built tough
DH hoists are robust to ensure reliable operation even in the toughest environments. Demag hoist units are designed for demanding applications such as foundries or electroplating plants with high ambient temperatures, high dust levels and aggressive environments. They can also withstand the adverse conditions typically encountered by rope hoists.
Versatile
Their modular concept and flexible mounting arrangements enable DH hoist units to be integrated into almost any structure with ease. Their many variants and options facilitate an almost unlimited range of applications. For example, you can find these hoists in lifting stations, winch arrangements and architectural applications – sometimes it takes a closer look to even discover them.
DH: Your benefits
- Rugged design – proven worldwide
- Easy integration into any design
- High switching frequencies and high duty cycles
- Precise positioning with mechanical microspeed or frequency-controlled lifting
- Load capacity up to 100 t
- Hook path up to 104 m
Universal. Safe. Rugged.
Demag DH hoist units are based on perfectly matched and robustly designed components. This means that they offer optimum conditions for individual solutions, even for unusual applications. Demag DH hoist units are in operation all over the world and offer outstanding safety and reliability.
DH hoist inquiry tool
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Model overview
Four designs for versatile solutions with load capacities from 1 to 100 t.
F-DH: Foot-mounted hoist
- Foot-mounted hoist for stationary use or special trolleys
- 4 mounting positions
- Rope lead-off in all directions
- Compact design
- Load capacity of 1 t to 100 t
EK-DH: Low-headroom travelling hoist
- Monorail trolley
- Low headroom
- Optimised hook path
- Load capacities up to 16 t
EU-DH: Monorail trolley
- sed on:
- monorails
- single-girder cranes
- Optional: EUD-DH articulated trolley
- Load capacities up to 50 t
EZ-DH: Double-rail crab
- Symmetrical distribution of wheel loads
- EZ-DH for optimum use of space
- Optimised clearance heights
- EZL-DH
- Drum turned 90°
- Shorter track gauge with longer drum
- Load capacities up to 100 t
Rope drum
Robust component for your application
- Longer service life
- Rope drum groove
- Ball bearings on both sides
- Rope sheave made of GGG70 with spheroidal-graphite cast iron (self-lubricating)
- Optional:
- Rope lead-off in all directions
- Multi-groove version available
- Right- or left-hand pitch
- Traversing winch
Drum brake
For improved safety in material handling
- Safety and/or holding brake
- Acting directly on the rope drum
- Safety brake bedded-in and pre-adjusted
- Sealed against environmental influences
- No sticking
- Rugged mechanical design
- Multiple brake applications also possible
Rope reeving arrangements
The right variant for every application
- 16 different rope reeving arrangements
- Standard reeving
- 4/1 for all sizes up to 50 t load capacity
- 8/1 for all sizes up to 100 t load capacity
- True vertical lift in x/2
- No hook travel
- Compensating sheave
- One rope
- For x/2-2 with two ropes
- Available for all sizes
- Optional:
- Multi-rope x/3, x/4
Rope guide
Tough rope guides as standard
- Wear-resistant rope guide made of acid-resistant PA12 plastic
- Suitable for inclined pull of up to 4°
- Slack rope protection thanks to closed design and pressure roller
- Optional:
- Reinforced rope guide F for outdoor use, frost-proof
- Double reinforced rope guide S for slightly increased inclined pull and low temperatures
- DSZ double rope guide, for heavy-duty hoist units with double-groove rope drum. Positively guided, for example, for grab or magnet operation, turning loads, etc.
Hoist motor
Our motor options for powerful and precise lifting
KB conical-rotor motor
- Rated power output:
- KBH F0: up to 17.8 kW
- KBH F6: up to 25 kW
- KBH F10: up to 40 kW
- KBA F10: up to 5.2 kW
- Fan wheel on motor shaft
- Standard temperature monitoring
- Enclosure class:
- Standard: IP54
- Optional: IP55, IP65
- Brake: IP20
- Temperature class F
ZBA cylindrical-rotor motor
- Rated output up to 40 kW
- Fan wheel on motor shaft
- Enclosure class:
- Standard: IP55
- Optional: IP65
- Temperature class F
- Closed loop with encoder feedback
- Inverter control with variable speed
- Separately controlled brake
- Brake release monitoring and brake adjustment monitoring
- External pulse generator
- Demag ProHub
- Load-dependent speed control
- Up to 50% higher speed with inverter-fed ZBA motors and up to 30% faster with partial loads
- Closed loop for safe and reliable lifting
- Saves time in workflows and allows higher handling rates
Gearbox
Reliable power transmission of high torques: Demag gearbox
- Operating life time:
- Up to 4m/M7 (6,300 hours)
- 2, 3 or 4 stage planetary gearbox
- Maintenance-free
- Integrated into the rope drum
- Lifetime lubrication
- Suitable for extremely dusty environments
- Machined helical gears
- Lifetime lubrication with synthetic oil
- Low noise
- High manufacturing accuracy
Roller spider coupling
- Quiet and low vibration
- Wear resistant
- 5-year maintenance interval
- Easy motor replacement
- No lubrication required
Electric equipment
Your choice: Hoist unit with or without electric equipment
- Without electric equipment
- Contactor control
- F-series load measurement
- Evaluation unit with smart functions (DMU)
- Can be programmed via Demag Equipment App (DEA)
- Integration of inverters
- Overload cut-off
- Electronic load monitoring
- CanBus capable
- Smart Features
- Slack rope cut-off
- Smart Tandem
- Other features
Hoist overload protection
- Mechanical limit switch (MGS)
- Strain gauge (ZMS)
- Precise strain gauge technology
- Optional: With F-series unit
- Electronic overload cut-off
- Options:
- Load spectrum recorder
- Large load display
- Load summation for up to 4 hoist units/rope anchorages
- Automatic switch-off in the event of slack rope
Demag Equipment App (DEA)
- Hoist operating data always at a glance
Controller
Simple and safe control: Demag pendant controllers
DST controller
- 3 sizes with many combinations of control and switching elements
- DST 3
- DST 7
- DST 9
- Real all-rounders for universal applications
- Low-fatigue operation thanks to ergonomically optimised housing design suspended at an angle
- High switching capacity
- High operating safety thanks to additional strain relief elements
- IP65 protection rating
DRC radio control systems
- DRC 10 with contactor control
- DRC-MJ with mini joystick
- Improved safety thanks to long range
- Long-lasting battery power for 5 days of non-stop operation
- Safety-related functions meet the requirements for Cat. 3, PL d to DIN EN 13849-1
- Coexistence of up to 40 D3 radio systems in accordance with the DIN EN 300328 coexistence standard
- Swap transmitters at the push of a button
- Infinitely variable control for sensitive control at low speeds
Equipment packages
The eight DH equipment packages contain the right solution option for harsh environmental conditions:
Application | Humidity (%) | Temperature (°C) | Installation location |
Outdoor operation with standard humidity | <= 80% | -10°C to +40°C | Moderate zone |
Outdoor operation with high humidity | 100% | -10°C to +40°C | Ports, near the sea, temperate zone |
Tropical climate indoors | <= 90% | -10°C to +40°C | Indoors |
Tropical climate outdoors | 100% | -10°C to +40°C | Outdoors |
Arctic climate indoors | <= 80% | -20°C to +40°C | Indoors |
Arctic climate outdoors | <= 80% | -20°C to +40°C | Outdoors |
Mild electroplating | 100% | -10°C to +40°C | Mild acids |
Strong electroplating | 100% | -10°C to +40°C | Strong acids |
More than lifting
The DH hoist can be used as your requirements dictate. Numerous variants of the basic hoist enable stationary use, use as a cable winch and as a hoist in crane operation. This enables loads and goods to be transported and lifted safely and powerfully in a wide range of environments.
Product information
Technical features
- High number of starts/stops and high duty factor thanks to mechanical microspeed and conical-rotor brake motors, also for high ambient temperatures
- Highly precise positioning with 1:10 mechanical microspeed
- NEW: Frequency-controlled lifting as standardised option
- Rope drums available with multi-groove designs
- Safe and reliable monitoring of the limit positions by geared limit switch
- Simple integration into almost any design
- Torsionally rigid frame, for bolted connection on all sides
- Rope lead-off possible in any direction
- Rope reeving according to customer requirements
- Wide range of lifting speeds
- Optionally with or without electric equipment
- Wide range of industry solutions available
Models
Stationary or mobile? Everything is possible.
Trolleys
- Travel wheels made of high-strength spheroidal-graphite cast-iron
- Particularly gentle on the track, quiet running thanks to effective vibration damping
- Lower friction and high wear resistance due to self-lubrication effect of embedded nodular graphite
- Optimum load distribution thanks to special travel wheel shape, which transmits wheel contact forces close to the centre of the girder
- Generously dimensioned anti-friction bearings with long service life
4 Models
Direct connection of Demag F-DH hoist units
- Square frame design can be mounted on any side.
- Load capacity: up to 100 t.
EK-DH low-headroom monorail hoist
- Trolley with favourable C-dimension.
- Also available as an articulated trolley.
- Load capacity: up to 16 t
EU-DH standard-headroom monorail hoist
- Cost-effective solution for monorails with infinitely variable flange width adjustment.
- Also as EUD-DH articulated trolley.
- Load capacity: up to 16 t (optionally also up to 50 t).
EZ-DH double-rail crab
- For higher load capacities on double-girder cranes; optimum use of space thanks to low-headroom design and favourable approach dimensions.
- Load capacity: up to 100 t.
Drive concept
Customised motions
Precise. Rugged. High performance. For our DH hoist range, we offer three different drive concepts that have proven themselves in a wide range of applications. Based on reliable series components, lifting solutions can be specifically configured for any requirement.
With the “Made in Germany” seal of quality.
Drive with main lifting and creep lifting speeds
Our conical-rotor brake motors with outputs of up to 40 kW are used as starting/stopping drives. The pole-changing motors have two speeds and work reliably even with extremely high switching frequencies. The mechanical connection between the conical brake and rotor creates a unique braking principle with high braking capacity. This makes these motors superior wherever the highest demands are placed on the brake. Separate control and additional switching elements are not required. The sliding-rotor motors are equipped with motor temperature monitoring as standard.
Drive for infinitely variable lifting speeds
The combination of our ZBA cylindrical-rotor brake motors with Dedrive Compact frequency inverters creates powerful lifting units with infinitely variable speeds. And they offer impressive performance:
- High drive efficiency with motor outputs of up to 40 kW
- Infinitely variable lifting speeds with inverter-controlled brake motor
- With external pulse generators for speed feedback to the frequency inverter
- Motor brake with adjustment monitoring and brake release monitoring
- Motor temperature monitoring as standard
- Also ready for customer drives and control solutions
Main and creep lifting speeds with F6 pole-changing
- Proven Demag drive technology with Demag KBH squirrel-cage motors
- Reliable and efficient in starting/stopping applications – also with high duty factor
Main and creep lifting speeds with F10 mechanical microspeed unit
- Demag KBH and KBA squirrel-cage motors
- Separate motors for main and creep lifting motions
- Particularly precise positioning
- High braking capacity and reliable braking without any control devices when switching off or in the event of a power failure
Demag rope guides
Protection against extreme loads, precisely guided
Rope guides protect Demag DH hoist units against extreme loads caused by inclined pull, load sway and rope vibrations. Made of tough, wear-resistant plastic, our rope guides can accommodate inclined pull of up to 4° without any contact. Two-part units, easily replaceable without special tools. Reinforced rope guides are available for special loads.
Standard PA 12 Rope guide
- Wear-resistant made of acid-resistant PA12 plastic
- Slack rope protection thanks to enclosed design and pressure roller
Rope guide type F
- Frost-resistant and reinforced
- Suitable for outdoor use
Rope guide type S
Heavy, double reinforced for medium inclined tensile loads, also at low temperatures.
Double rope guide type DSZ
For heavy-duty hoist units with double-groove drum, especially in heavy-duty operating conditions with magnet or grab operation. Reduced sway.