Head to head
KUKA LBR iiwa 7 R800 vs Universal Robots UR5e
A specification duel across payload, reach, precision, and footprint, with a plain read on which arm suits which job.
Sensitive seven axis cobot for precision tasks
The cobot that defined the category.
Specification duel
Green marks the stronger figure. Unconfirmed specs are shown but not scored.
The verdict
The specs separate them here: the KUKA LBR iiwa 7 R800 carries more, 7 kg to the Universal Robots UR5e's 5 kg. If precision drives the job, the Universal Robots UR5e holds the tighter repeatability at ±0.03 mm. They run different controllers, the KUKA LBR iiwa 7 R800 on the KUKA Sunrise Cabinet and the Universal Robots UR5e on the PolyScope, so whichever platform your team already programs and stocks parts for is a real tiebreaker. Mounting options differ: the KUKA LBR iiwa 7 R800 lists Floor, Ceiling, and Wall, and the Universal Robots UR5e lists Any. Both are aimed at machine tending, with the KUKA LBR iiwa 7 R800 stretching to collaborative assembly and precision assembly and the Universal Robots UR5e to assembly and quality inspection.
Choose this one when
Job fit first, then the controller and cell constraints that decide which arm you can actually install.
Choose the KUKA LBR iiwa 7 R800 when
- Seven axes give redundant, human like motion paths
- Joint torque sensing on every axis
- Good for delicate insertion and assembly tasks
- Programmable through intuitive hand guiding
Watch for
- Lower payload than most industrial arms
- Higher cost per kilogram of payload than standard robots
Choose the Universal Robots UR5e when
- Huge ecosystem of UR+ end-effectors
- Easy to program
- Built-in force sensing
Watch for
- Low payload
- IP54 limits wet environments
Controller ecosystem
Programming habits, spare parts, and pendant familiarity often decide the pick when payloads are close.
- Brand
- KUKA
- Controller
- KUKA Sunrise Cabinet
- Class
- collaborative
Service, spares, and pendant training for the KUKA LBR iiwa 7 R800 run through KUKA's KUKA Sunrise Cabinet stack.
- Brand
- Universal Robots
- Controller
- PolyScope
- Class
- collaborative
Service, spares, and pendant training for the Universal Robots UR5e run through Universal Robots's PolyScope stack.
These arms run different controllers (KUKA Sunrise Cabinet vs PolyScope). If your team already programs one of them, retraining programmers and stocking a second set of spares usually costs more than a small payload or reach advantage on paper.
Mounting, footprint, and mass
How the arm can be oriented in the cell, and how much mass you have to mount.
| Field | KUKA LBR iiwa 7 R800 | Universal Robots UR5e |
|---|---|---|
| Mounting | Floor, Ceiling, and Wall | Any |
| Robot mass | 23.9 kg | 20.6 kg |
| Protection (IP) | IP54 | IP54 |
Heavier arms want stiffer bases and more clearance around the swept volume, and they push freight and rigging costs up on the install. IP ratings only cover the section they name, so a wrist-only rating protects the wrist and nothing else; check the body rating separately before you commit the arm to a washdown or dusty cell.
Application fit
Where each arm is aimed, based on the applications listed on its robot page.
Both pages list machine tending, with the differences below.
KUKA LBR iiwa 7 R800 also covers
- collaborative assembly
- precision assembly
- electronics assembly
Universal Robots UR5e also covers
Speed and cycle-time planning
Speed is rarely a single datasheet number across brands. Use payload, reach, and class as the planning frame, then confirm cycle time in a path study.
The KUKA LBR iiwa 7 R800 is a collaborative arm rated 7 kg at 800 mm with ±0.1 mm repeatability. The Universal Robots UR5e is a collaborative arm rated 5 kg at 850 mm with ±0.03 mm. Class changes how speed shows up in a cell: collaborative arms slow down near people and can speed up in a guarded mode, while industrial arms run at rated speed inside a fence or scanner field. Which arm cycles faster on your part depends on the path, the payload, and the safeguarding, so confirm the takt with a path study before you quote it.
Common questions
- Which has more payload, the KUKA LBR iiwa 7 R800 or the Universal Robots UR5e?
- The KUKA LBR iiwa 7 R800 has more payload at 7 kg versus 5 kg.
- Which reaches farther?
- The Universal Robots UR5e has more reach at 850 mm versus 800 mm.
- Which is more precise?
- The Universal Robots UR5e holds tighter repeatability at ±0.03 mm.
- Should I choose the KUKA LBR iiwa 7 R800 or the Universal Robots UR5e?
- Match the pick to the job. The KUKA LBR iiwa 7 R800 is a collaborative arm at 7 kg and 800 mm. The Universal Robots UR5e is a collaborative arm at 5 kg and 850 mm.
- Do the KUKA LBR iiwa 7 R800 and Universal Robots UR5e use the same controller?
- No. The KUKA LBR iiwa 7 R800 uses KUKA Sunrise Cabinet and the Universal Robots UR5e uses PolyScope.
- How do the IP ratings compare?
- The KUKA LBR iiwa 7 R800 is rated IP54. The Universal Robots UR5e is rated IP54. Check wrist versus body coverage before washdown or dusty cells.