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KUKA LBR iiwa 7 R800 vs UR7e: The Force-Sensitivity Pioneer Meets the Modern Standard
Key facts
- PayloadKUKA LBR iiwa 7 R800: 7 kg · UR7e: 7.5 kg
- WeightKUKA LBR iiwa 7 R800: — · UR7e: 20.6 kg
- StatusKUKA LBR iiwa 7 R800: on sale · UR7e: on sale
- In PolandKUKA LBR iiwa 7 R800: yes · UR7e: yes
The KUKA LBR iiwa 7 R800 and the UR7e are set side by side mainly by two groups: laboratories and research teams who know the iiwa from scientific papers, and integrators looking for a cobot for medium-run assembly. The first is an arm from KUKA, presented in 2013 and sold since 2014, regarded as a pioneer of robots with torque sensors throughout the arm. The second, from Universal Robots, reached the market in May 2025 and is the successor to the UR5e. More than a decade of design separates them. The question is whether an extra, seventh axis and a research pedigree are worth paying for today, when the market has newer, simpler cobots. We collected general selection rules in “How to Buy a Cobot Step by Step”, and we write about degrees of freedom in “Degrees of Freedom (DOF) in Humanoid Robots”.
Universal Robots A/S
UR7e
—| Feature | KUKA LBR iiwa 7 R800 | UR7e |
|---|---|---|
| Manufacturer | KUKA | Universal Robots A/S |
| Price (PLN) | no data | no data |
| Weight (kg) | no data | 20.6 |
| Degrees of freedom | 7 | 6 |
| Payload (kg) | 7.0 | 7.5 |
| Status | on sale | on sale |
Design and specifications
The LBR iiwa 7 R800 has seven axes, a 7 kg payload and an 800 mm reach. According to the manufacturer it was the first series-production industrial robot with torque sensors in all seven axes, which enabled certification for direct human-robot collaboration at safety category Cat 3 / PL d. 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 only.
The payload is almost identical: 7 kg against 7.5 kg. What differs is the number of axes and where the sensing sits. The seventh axis gives the iiwa kinematic redundancy, that is, the ability to change the elbow configuration while the tool stays in the same position. That helps in tight cells and when avoiding obstacles, and the simpler UR7e has no such freedom. Sensors in every joint let the iiwa feel contact along the whole arm, while the UR7e measures force at the tool. On the other hand the UR7e has 120 mm more reach. We do not state the iiwa’s weight because it is not. How to read such tables is explained in “How to Read a Robot Datasheet”.
Price and availability in Poland
KUKA does not publish a price list for the iiwa. A Standard Bots market estimate for KUKA cobots in general is USD 60,000–70,000, but it is not the official price of this model, so treat it as an order of magnitude. For the UR7e there is no public price at all. We therefore will not give a difference in zloty, because we would have to guess the other side.
In Poland the iiwa is listed as available through zapamet.pl, but the availability of a specific unit and service support have to be confirmed by enquiry; KUKA Polska also offers a contact. 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. According to the manufacturer the iiwa is also more complex to program than the simpler iisy family, which feeds into integration costs.
Which model for which job
The iiwa is for precision assembly and research: force-control experiments, prototyping and tasks where the seventh axis lets the arm get round an obstacle in a tight cell. It suits the laboratory and the university, and also some assembly stations in a factory where the machine park is already KUKA.
The UR7e handles assembly, machine tending and pick&place in medium runs: tasks where quick deployment, simpler programming and a large accessory ecosystem count, for example grippers from Robotiq. If you like the KUKA family but want a newer, six-axis arm, consider the KUKA LBR iisy 6 R1300, and when 7 kg is too little, the KUKA LBR iiwa 14 R820 from the same series carries 14 kg. If you need seven axes for research, see also the Franka Research 3.
Conclusion
The LBR iiwa 7 R800, on sale since 2014, was one of the first commercial cobots with torque sensors in all seven axes, and its seven-axis design gives it more freedom of movement than the six-axis UR7e. Payload is close: 7 kg for the iiwa against 7.5 kg for the UR7e. The market price of KUKA cobots is estimated at $60,000 to $70,000 according to Standard Bots, although that isn't an official manufacturer price list; no price has been disclosed for the UR7e at all. Both are available in Poland: the iiwa through zapamet.pl, the UR7e through elmark.com.pl. The iiwa aims at precision assembly and research thanks to its extra axis, while the UR7e stresses versatility in assembly and part handling in mid-volume production. For tasks that need extra freedom of movement (for example, working around obstacles), the iiwa's seventh axis gives a real design advantage.
For a researcher who needs the seventh axis, torque sensors in every joint and a model known from the scientific literature, the iiwa remains a justified choice. So it does for a firm with a KUKA fleet that wants to keep a single service ecosystem. For a new assembly deployment with no kinematic-redundancy requirement, the UR7e is the better starting point: newer, simpler, with a longer reach and a broader ecosystem. The seventh axis costs in programming complexity, and the USD 60,000–70,000 estimate shows the bill can be high, though it is not this model’s price. Before choosing the iiwa, check whether you really need redundancy; if not, the UR7e will do the same job at lower integration cost.
Frequently asked questions
How many axes does the KUKA LBR iiwa 7 R800 have?
Seven, one more than the standard six-axis UR7e, which gives it greater freedom of movement.
What is the estimated price of the iiwa?
On the market, $60,000 to $70,000 according to Standard Bots, although that isn't an official KUKA price list.
Which model is older?
The LBR iiwa 7 R800, on sale since 2014, is more than a decade older than the UR7e, introduced in 2025.
Which robot has the longer reach?
The UR7e, with 920 mm against 800 mm for the iiwa.