more data for download (Catalogue, STEP, drawings)

I want to supply more data for you to be downloaded, especially about our RL-DC “standard arms”. Our standard arms include all joints, motors, connections (=c-shaped metal sheets), cables and chains. Attached our NEW catalogue (now also available in ENG), STEP data for our 8 standard configurations and also the related drawings with part lists. We have “small arms” (up to 1 kg, based on our joints RL-D-30 and RL-D-20) as 4 or 5 DOF and “big arms” (up to 3 kg, based on our joints RL-D-50, -30 and -20).


Version With motorencoder and Ini switch or “output encoders” (-AE). I will explain the difference in a later entry.


NEW Catalogue 2017-04 in engl.:  EN_robolink_2017_2

STEP data small robots (4 versions): STEP Daten BC klein

DRAWINGS small robots (4 versions): Zeichnungen BC klein

STEP data big robots (4 versions): STEP Daten BC groß

DRAWINGS big robots (4 versions): Zeichnungen BC goß

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

STEP data for robolink D

since October 2015, the standard version of RL-D-50 (-101 and -102) is also available from stock. The missing PRT-02-50 version was the reason for the delay. Please find attached here the STEP data for our joints for all variants and sizes, as well as for a collection of motor kits (with igus stepper motors).

These STEP data will soon be available via our main igus download center too! It is only a question of a few more days……

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)