robolink and art

The swiss light artist CAROLINE TAPERNOUX has used 3 robolink joint arms to create different light installations and test our products for possible projects. This was our first project with a worldwide successfull artist and it was a great pleasure for us. Please watch the sample video to get an impression of her work or visit her website:

RL-S strain wave gears now available

At the HMI trade show we released our strain wave gear (RL-S) as a product in addition to our worm gears (RL-D). The smallest version of the strain wave gear (RL-S-17-N11-00-28-020K0) is used for the fifth axis in the standard joint arms RL-D-RBT-5532S-XX and RL-D-RBT-3322S-XX. The RL-S-17 gear comes in two variations, both have a transmission rate of 28:1:

1. suitable for small motors (like NEMA11 stepper motors, holding torque = 0.1 Nm), output torque max. 1 Nm

2. suitable for slightly bigger motors (like NEMA17 stepper motors, holding torque = 0.5 Nm), output torque max. 3 Nm

The biggest available joint is the RL-S-20-N23-00-38-12000 with a transmission rate of 38:1. The maximum output torque is about 5 Nm, depending on speed and usage duration. Also here you are able to choose between two versions:

1. high-end: RL-S-20-N23-00-38-12030 (with PRT-01-20)

2. standard: RL-S-20-N23-00-38-12000 (with a standard PRT-02-20-AL)

attached are CAD data and the current data sheets: RL-S-STEP+Data

All gears can be purchased with igus stepper motors, initiator kits, encoder kits or customized to be combined with your motor!

Sorry for absence

our blog has been offline nearly 3 weeks due to internal revision.

It took us lonnger than expected and I am very sorry for the long absence. Please come back! Soon I will post new data sheets for our RL-D joints with some improvements and more technical data. In addition I will soon post new videos “how to mount a RL arm”.

Thank you for your patience!!

robolink at MOTEK, 4 DOF, new documents

At this year’s MOTEK show in Stuttgart (GER) we will show the possibility to build 4 DOF robot arms with our motorized joints. 2 films at the end of this entry show 2 possible concepts:

1) “small” version with 4 joints size 30 – 30 -20 – 20, built with igus DC motors. No programming possible, just a joystick control.

2) “big” version with 4 joints size 50 – 50 – 30 – 20, built with igus stepper motors and a robolink gripper.

Please be aware that both arms are no sales products. They are examples of how a joint arm could look like. The connection parts are made of folded metal sheet parts. Please contact me for further questions in this issue (

Also attached our new catalogue (this version in GER with more RL-D infos and german list prices). Eng. version will follow soon.

LINK:  de_robolink_08-2015 (3.80 mb)

And additionally 2 updated versions of tech. data sheets for symmetrical joints (version 101 with 2 PRT) and asymmetrical joints (version 102 with 1 PRT)

LINK: tech-data-rl-d-101_d-eng_15_11 (171.03 kb)

LINK: tech-data-rl-d-102-_d-eng_16_01 (162.11 kb)



robot FLASH from Wroclaw University of technology (Poland)

The team of Jan Kedzierski (Ph.D.) from Wroclaw University of technology now presents their NEW generation of the autonomous robot FLASH. It is (again) equipped with 2 pcs. 5 DOF robolink wire driven joint arms. They developpped their own drive technology for this robot based on DC/BLDC motors as an open source project. It will be published soon, I will link to their project then.