Franka Research 3 (FR3) vs UR7e: Research Precision vs Industrial Versatility

The FR3 has seven axes, a 3 kg payload, an 855 mm reach, a weight of 18 kg and a repeatability of ±0.1 mm. Each of its seven joints has a torque sensor, which allows force control at 1 kHz. The controller runs on an Intel processor under Linux, and open software, including the libfranka library and ROS integration, eases research. The UR7e has six axes, a 7.5 kg payload, a 920 mm reach, a weight of 20.6 kg and a repeatability of ±0.03 mm, with a force/torque sensor at the tool flange.

The numbers come out unexpectedly. The FR3 is 2.6 kg lighter, but has less than half the payload (3 kg against 7.5 kg) and a reach 65 mm shorter. A repeatability of ±0.1 mm is nominally worse than ±0.03 mm, so the FR3’s edge lies not in positioning precision but in how it senses and controls force. Seven torque sensors and an open API make it possible to program behaviours that a six-axis UR7e with a single sensor cannot reproduce. On the other hand the UR7e has the advantage in work without a programmer: ready-made add-ons, training, broad support. The rules for reading such datasheets are described in “How to Read a Robot Datasheet”.

Franka publishes no official price list. Sources give a spread of roughly USD 25,000 to 35,000, and the midpoint of USD 30,000 used here comes to about PLN 116,300 (≈ EUR 26,650) at a rate of 3.8762 from 1 October 2026. The Vention platform lists the FR3 at EUR 25,250 with a 17-day lead time. That is a guide, not a price list. For the UR7e the manufacturer states no price; a distributor will give cost information.

In Poland we have no confirmed distributor for the FR3, so buying means an enquiry to the manufacturer or to a foreign seller. The UR7e is carried by Elmark Automatyka (Universal Robots collaborative robots). The CP Trade page describes only the older UR3, UR5 and UR10, so availability of the UR7e there needs confirming. When buying abroad, add transport, duty, VAT and warranty, because service in Poland may not be straightforward.

The FR3 is popular in robotics laboratories, in manipulation research, in prototyping and in assembly under force control: wherever an algorithm has to feel resistance and react within milliseconds. The natural environment is the laboratory and the university, and on the component side equipment from ATI Industrial Automation, that is force sensors, is useful. A small payload closes the door to palletizing and simple pick&place of heavier parts.

The UR7e handles repeatable industrial operations: assembly, machine tending and pick&place in medium runs in a factory. If you need seven axes in a higher class, consider the Kinova Gen3 (4 kg) or the Flexiv Rizon 4; if you need a heavier six-axis arm, the UR12e. Tell your team what the goal is: a scientific paper or an eight-hour shift.