NEW Application for robolink in low cost sorting

Our customer PROFACTOR from Austria ( has shown a new low cost sorting solution at MOTEK show in Stuttgart. They use our robolink joint arm RL-DQ-RBT-5532S for this task. The arm uses a CPR control unit (

For further questions about the complete solution please contact Mr. Helmut Nöhmayer from PROFACTOR (

NEW robolink “gantry” unit 5+1

in older posts, I presented our current solution for pick+place of e-chain parts. Cycle time of 5-6 sec/pick is the most critical issue (we can not operate much faster due to missing stiffness of the igus arm). We now solve this issue by using our arms on drylin rails, in addition we use 2 units to feed one mounting unit.

Result: reduction of cycle time!

We expect a final cycle time of 2,5 sec with this “5+1” unit (or better 2x(5+1): 2 drylin carriages and 2 pcs roboolink arms with 5 DOF). We will present the new mounting unit in operation at SPS show in Nürnberg by the end of NOV. Sales price for total 12 DOF unit will be BELOW 10.000,- € (detailed pricing will be announced at SPS show). We use BECKHOFF control parts here.

Video of first test runs….

Output Encoder for RL-D / RL-S

We supply 2 options of encoders for our joints / joint arms.

Option 1 (our Standard before HMI 2017): Motorencoder plus Ini switch for 0-point reference on the joint output (PRT bearing)

Option 2): Output encoder on the PRT bearing of the joint. This is our own development, we use a magnetic ring plus Encoderchip on the output with an aditional magnet and Hall Sensor as reference point. Please find attached a description of the output encoder attached in GER and ENGL. Advantage: less cables, higher resolution, more accuracy for the arm.

DOWNLOAD section:

output encoder DEU: RL-D Sensorik Doku (#3)

output encoder ENGL: RL-D Sensors Dok (E #3)

strain wave gear (RL-S) vs. cycloid gear (RL-C)

The strain wave gear is available as a product in the size RL-S-17 and RL-S-20. RL-S-30 is a prototype and still in development.

The cyclo gear can be an alternative in future and is not available as a product yet. The sizes 17 and 20 are currently in development.

Both types of gears contain a coaxial in- and output axis (different from RL-D worm gears), they consist of three similar components:

  • An outer (static) toothed ring
  • An inner toothed ring (rigid in the cycloid gear, flexible in the SWG)

  • A drive (an excentric in the case of the cycloid gear, the wave generator in the SWG)



strain wave gear with flexible inner ring                  cycloid gear with excentric ring