HMEC - Products - Power Transmission - Slewing System Products - Slew Drives - Applications
The Slew Drive's Applications (put mouse on the picture for more information...)
Conveyor systems
This is a facility to cover car facia panels with leather. It contains Slew Drive. Because of its operating condition, it is fitted with a spring energised multi-plate disk brake.      

Construction machinery
To protect the teeth of this demolition equipment from overload damages, a friction coupling is integrated in the spur gear driven Slew Drive. This kind of Slew Drive installed in a rotation and tilting device of an excavator shovel bucket.
Slew Drive of this series in a special design for a foundation grab of a heavy construction machine.
Cement mixer equipped with a conveyor belt with a length of 16.5 m, which is rotated with two Slew Drives; the considerable length of the belt leads to high tilting moments. Therefore a double row design with a reinforced housing is used.

Mining and tunneling
  • Mining
  • Open-cast mining
  • Tunnel boring machines
Mining vehicle with special equipment and horizontal telescopic and rotating platform. Its boom is rotated with this kind Slew Drive.

This kind Slew Drive with hydrostatic gear for turning an excavator boom. Part of a cutter bar of a tunnel driving-machine.

To ensure that the blasthole drilling rig remains locked in place during the drilling process, this kind Slew Drive unit shown has an integrated locking system with a position holding gear

See how Slewing Rings applied.  See how Slewing Rings applied.




Drilling rigs      
See how Slewing Rings applied.      

Amusement park rides      
A ride in "zero g" guarantees thrills and alsozero gravity for a short time. The gondolas are rotatedwith our Slew Drive. Also see how Slewing Rings applied.    
Foundries & steel works  
See how Slewing Rings applied.      

Manlift platforms      
  • Bridge inspection equipment
  • Big manlift platforms
  • Small and medium manlift platforms
This bridge inspection equipment uses Slew Drive in the boom joint. The unit is able to accommodate the suspended loads and is fitted with a worm drive and multi-plate disk brake. Here is one of the biggest manlift platforms. With a maximum platform height of 57 m (187 ft) it is the only platform in its class outreaching 43 m (141 ft) to the side - a world record! How this can be achieved? The solution is the patented turntable! And HMEC can supply the two vital Ball Slewing Rings and a Slew Drive as a drive unit!

Boom attached to gear ring Synchronous rotating turntable with HMEC Slew Drive Mounted to truck chassis.

The high capacity and low profile of the HMEC Slew Drives are perfectly suited for manlift platforms. The wide varity of sizes in this series enables their use in many different kinds of platforms (heights ranging between 7 and 27 meters). Design standardisation "at its best"!

The kind of Slew Drive is used for boom and basket rotation on this manlift system. HMEC Slew Drives: "One standard technology for your entire product offering!"


  • Railway slewing cranes
  • Harbour cranes
  • Industry cranes
  • Mobile cranes  
Railway slewing cranes are designed for multiple tasks such as bridge and railway construction as well as the utilisation as breakdown crane.
Due to the dimensional limitations of the loading gauge envelope and overhead power lines, only Triple Row Roller Slewing Rings are suitable for the loading encountered in railway cranes. Slewing Ring designs with internal toothing, or external toothing (as cross-section), are available.
See how Slewing Rings applied. See how Slewing Rings applied. The special series Slew Drive with two direct hydraulic motors was developed for this special crane, used for roof top operations.
  • Ship cranes
  • Swim cranes
  • Service cranes
See how Slewing Rings applied. See how Slewing Rings applied. Light cranes - the standard equipment of service trucks, using Slew Drive.  

Agriculture & forestry      
Harvesters use our Ball Slewing Rings and Slew Drives for the axle swing arm, the crane boom, the harvester head (with a chain saw) and a rotatable cab. This work boat which is used in Dutch canals is fitted with a Slew Drive to move the boom of the excavator.    

Steering gears      
  • Crane undercarriage
  • Special vehicles
With the capacity to handle extreme tilting moments, high output torques, all in a compact design, the Slew Drives are especially suited as steering gears. In addition, integrated position feedback sensors support computer controlled steering systems.

Using Slew Drives, cranes and special vehicles achieve unique manoeuvring capabilities including turning on the spot.

Sixteen Slew Drives on each side of this 80 m (262 ft) long special vehicle forms its steering system. Such vehicles have been used to move and place the concrete tracks of Shanghai`s magnetic suspension railway.

In concrete factories, large movable gantry cranes displace heavy and bulky prefabricated concrete. With the Slew Drive, each axle can be turned individually. The steering torque required with the maximum load while turning on the spot is about 150,000 Nm (110,639 ft-lb).

Ship lifting device to lift and place ships up to a weight of 650 tons. Eight Slew Drives carry this load capacity.

Heavy load transporters present big technical challenges. Each single axle is steered by an Slew Drive requiring the maximum axial, radial and tilting moment capacity. The Slew Drive with steering torques of 27000 Nm is an excellent solution.

In May 2004 the world record for the heaviest load moved on wheels was claimed with this Self Propelled Modular Trailer (SPMT). The trailer was equipped with a total of 470 axle lines and 1880 wheels. The patented Slew drives, used as steering gear, took their share in reaching the world record.

Side loader with the steering gears of the Slew Drives; the high operating time requires the use of bronze worm gears.


Materials handling & bulk handling      
  • Materials handling
  • Bucket wheel stackers/reclaimers
See how Slewing Rings applied. See how Slewing Rings applied.    

See how Slewing Rings applied.      

Medical technology      
See how Slewing Rings applied.      

  • Cranes
  • Crude oil production systems FPSO

See how Slewing Rings applied.

See how Slewing Rings applied.    

Precision applications      
  • Antennas
  • Military technology
See how Slewing Rings applied. See how Slewing Rings applied.    

Renewable energies      
  • Tidal stream systems
  • Solar applications
  • Wind energy
See how Slewing Rings applied. Slew Drives fitted with electric motors used for the yaw and pitch controls of this solar table.
See how Slewing Rings applied.  

Ship building      
This functional but elegant twin worm Slew Drive, is ideally suited for the slewing gear of a yacht crane. Also see how Slewing Rings applied.    

Special applications      
See how Slewing Rings applied.      

Public transportation systems      
See how Slewing Rings applied.      
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