New data sheets for RL-D joints

we run regular lifetime tests with our gears in our lab. Based on these tests, we did some inside changes in our gears, most important is the change of gear geometry and gear pulley material during the last months (from iglidur J to iglidur A 180). By this, we improved lifetime and friction (efficiency) in the joints. Please find attached NEW data sheets for our joints, now also including the current standard transmission ratios we can supply from stock (from 1:5 up to 1:70).

NEW Data sheet for symmetrical joints with 2 bearings (vertical installation)

tech data RL-D-101 (D-ENG) 2017-02

NEW Data sheet for asymmetrical joints with 1 bearing (horizontal installation)

tech data RL-D-102 (D-ENG) 2017-02

how to change worm wheels (video)

the main differences between our gears and standard metal gears are:

ours are lubrication free (no grease, no oil) and very lightweight due to plastic and aluminium parts instead of steel, brass or bronze (=standard design). The same is valid for the bearings we use on the output (igus PRT = polymer round tables).

This makes it very easy to open our joints, in case worm wheels need to be exchanged (reasons for exchange might be: broken gear teeth due to overload on the output or the need to change gear parts due to changing conditions like temperature,…). The video shows how to proceed:


how to build a robolink arm (videos)

we supply either components (joints, motors, cables,…) or complete electro-mechanical joint arms. compared to industrial robots, the composition of a robolink joint arm is quite easy and can be reproduced by “everybody”. We show the composition of a 5 DOF joint arm in 3 single video clips:

  1. assembly of joints, “motorkits” and “Inikits” (for 0-point reference),
  2. assembly of an arm
  3. cabling of the arm

these films shall help you to understand the idea of our joint kit and how easy it is to change, modify or configure our arms.

Video 1) joint assembly

Video 2) arm assembly

Video 3) cabling of a joint arm

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!!

Customer application: Automation with RL

Our german customer MATRIUM GmbH has designed and built this automation unit with a huge number of igus components such as drylinE rails, e-chains, chainflex, tribotape and also robolink. It runs today in daily operation. The robolink arm consists of 2 joints (size -20 and -30) and performs a “simple” scara movement.

The complete unit is 5,50 x 3,70 m big, it serves to sort so called JEDEC-Trays for recycling / re-use, ~ 2.500 different trays can be recognized and sorted after the vision learning phase!

More information and contact data: MATRIUM GmbH,, Mr. Eikel is the responsible engineer.

trays    roboarm_abgewinkelt_unterste_eckposition

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