UR3e vs Franka Research 3: 3 kg Cobot Comparison for Industry and Research
Updated: 8 hours ago
IN A NUTSHELL
🔎 THE KEY DIFFERENCE Both are compared at 3 kg. Franka Research 3 has the longer stated reach, which may help reach separated fixtures; it does not guarantee access at every tool angle. Universal Robots UR3e has 6 axes, compared with 7 axes for Franka Research 3. |
→ CONSIDER Universal Robots UR3e Consider it when its stated load and reach already cover your task and its controls fit your equipment. This article compares 3 kg with a published reach of 500 mm; include the gripper and part in the load. |
→ CONSIDER Franka Research 3 Consider it when extra reach is useful while the compared load capacity is the same. This article compares 3 kg with a published reach of 855 mm; include the gripper and part in the load. |
💡 THE TAKEAWAY Check the required tool angles and approach path: different axis counts change movement options. Choose only after both suppliers demonstrate the loaded task and quote the same complete installation. |
The Universal Robots UR3e and the Franka Research 3 both carry 3 kg but are built for different users. The UR3e is a production cobot. The Franka Research 3 is a 7-axis arm with low-level control access, made for robotics and AI research.
Quick verdict. The Franka Research 3 is the better choice for research labs, with 7 axes, link-side torque sensors, the 1 kHz Franka Control Interface, 855 mm reach and a listed price about 12% lower. The UR3e is the better choice for production benchtop cells, with ±0.03 mm repeatability and an 11.2 kg arm.
UR3e and Franka Research 3 at a glance
The UR3e carries 3 kg over 500 mm, repeats to ±0.03 mm and weighs 11.2 kg.
The Franka Research 3 carries 3 kg over 855 mm, repeats to better than ±0.1 mm, weighs about 17.8 kg and is rated IP40.
Main specification comparison
Specification | Universal Robots UR3e | Franka Research 3 |
Brand | Universal Robots | Franka |
Listed price | $33,800 | $29,800 |
Payload | 3 kg | 3 kg |
Reach | 500 mm | 855 mm |
Repeatability | ±0.03 mm | <±0.1 mm |
Axes | 6 | 7 |
Speed | 3 m/s maximum TCP speed | 2 m/s maximum end-effector speed |
Arm weight | 11.2 kg | approx. 17.8 kg |
IP rating | IP54 | IP40 |
Controller | UR control box CB 5.5 / CB 5.6 | Franka 19-inch controller (355 × 483 × 89 mm, approx. 7 kg, IP20) |
Price comparison
UR3e: listed from $33,800
Franka Research 3: listed from $29,800
Difference: $4,000
The Franka Research 3 costs roughly 12% less
Control access and sensing
The Franka Research 3 has link-side torque sensors in all seven joints and the 1 kHz Franka Control Interface, which gives researchers direct low-level access for control, learning and manipulation experiments. The UR3e has a built-in ±30 N / ±10 Nm force/torque sensor and supports ROS/ROS2 alongside PolyScope.
Reach and axes
The Franka Research 3 reaches 855 mm, 355 mm more than the UR3e, and its 7 axes let it reach around obstacles while keeping the tool orientation.
Precision, speed and protection
The UR3e publishes ±0.03 mm repeatability and a 3 m/s maximum tool speed, and is rated IP54. Franka publishes better than ±0.1 mm, a 2 m/s maximum end-effector speed and IP40 for the Research 3. The UR3e weighs 11.2 kg and suits benches and in-machine mounting.
Best applications for the UR3e
Production benchtop assembly
Screwdriving and insertion
Robots inside machines
Best applications for the Franka Research 3
Robotics and AI research
Learning and manipulation experiments
University teaching labs
UR3e advantages
±0.03 mm repeatability
11.2 kg arm
IP54 and UR+ ecosystem
UR3e limitations
500 mm reach
About $4,000 higher listed price
Franka Research 3 advantages
1 kHz Franka Control Interface
7 axes with torque sensors
855 mm reach
Franka Research 3 limitations
Built for research rather than production
IP40 rating
Final verdict
Choose the Franka Research 3 for research and AI labs that need low-level control. Choose the UR3e for precise production benchtop cells.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR3e or the Franka Research 3?
The Franka Research 3 is listed from $29,800 and the UR3e from $33,800, a difference of $4,000.
Do both robots carry 3 kg?
Yes. Both are rated for 3 kg.
Which robot has the longer reach?
The Franka Research 3 reaches 855 mm and the UR3e 500 mm.
Which robot is more precise?
The UR3e publishes ±0.03 mm repeatability and the Franka Research 3 better than ±0.1 mm.
Which robot is better for research?
The Franka Research 3, with its 1 kHz Franka Control Interface and joint torque sensors.
Which robot should I buy?
Choose the Franka Research 3 for research. Choose the UR3e for production benchtop work.
