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+375 17 207 3921
COOO "Hennlich"

Biryuzova street, 4/5, office 1012

BY 220073 Minsk

Republik Belarus

+375 17 207 3921
drygear strain wave gear RL-S-17

Light and efficient: drygear® strain wave gear RL-S-17

New generation of strain wave gears

The new generation of strain wave gears convinces with a particularly compact design. The use of lubrication-free, high-performance polymers makes gear assembly very easy. In addition, the optimised use of tribo-polymers has improved smooth running, backlash and service life. Along the last axis of an articulated arm, linear robot or delta robot, the strain wave gear can be used before different gripper systems. Here, it performs the task of gripping objects that are not rotationally symmetrical and positioning them exactly.

  • for a direct connection of NEMA17 stepper motors
  • cost-effective automation solution
  • adapter disc for flange-mounting of grippers available
  • low maintenance due to lubrication-free, high-performance polymers
  • can be ordered as a bundle via the robotics platform RBTX.de

Buy drygear strain wave gear now

Tech up

Tech up for igus strain wave gears

  • Improved generation of strain wave gears: 50% higher efficiency
  • Very light due to igus high-performance polymers
  • Extremely compact for integration as axis 5 in robotics
  • All-round improved performance and running performance

Cost down

Save costs with new strain wave gears

  • Cost-effective due to use of plastic
  • Quick and easy adaption as axis 5 in robolink DP
  • Compatibility with gripper systems of other robot manufacturers
  • Adapter disc of, among others, grippers and vision prepared



  • 28% higher efficiency
  • 94% higher load-bearing capacity
  • Torque fluctuations reduced by factor 3
  • Reduction of the breakaway torque by factor 2



  • Extremely low mass inertia as axis 5 in robotics
  • Completely lubrication-free operation

drygear® - tested and proven

28% higher efficiency, 47% improved breakaway torque, 54% less torque fluctuation

drygear_breakaway torque

For this purpose we have developed the strain wave gear RL-S-17

The novel strain wave gear implements movements, for example on the robot axis 5, as well as many other durable and cost-effective automation applications. Due to their components, the igus strain wave gears are characterised by freedom from lubrication as well as friction and wear resistance. At the same time, the use of plastics enables an extremely compact design and cost-effective manufacture.  
As a result of active research and further development of the strain wave gear, operating smoothness, backlash and service life of the latest generation have been optimised further by means of improvements in the technical design and in the selection of materials. The new strain wave gear can also be adapted to a stepper motor or other motor types. It is based on the Nema 17 installation size and was developed in such a way that a high ratio of 28:1 can be shown. This has been tested in our own test laboratory at a service life of 1 million cycles, a load of 1.5Nm and a speed of 6rpm.  These development steps are already planned for the Nema 23 installation size.

Buy RL-S strain wave gear now


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igus expert Michael Hornung

The igus® expert Michael Hornung will gladly advise you in this regard with no strings attached.

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