UR3e vs Flexiv Rizon 4: Cobot Comparison of Price, Reach and Force Control
The Universal Robots UR3e and the Flexiv Rizon 4 are small cobots with different strengths. The Rizon 4 carries 1 kg more, reaches much further, has 7 axes and IP65, and costs a little less. The UR3e is lighter, more precise and faster.
Quick verdict. The Flexiv Rizon 4 offers more envelope for slightly less, with 876 mm reach, 7 axes, 0.1 N force sensing accuracy, IP65 and a $1,800 lower listed price. The UR3e is the better choice for compact, precise benchtop cells, with an 11.2 kg arm and ±0.03 mm repeatability.
UR3e and Rizon 4 at a glance
The UR3e carries 3 kg over 500 mm, repeats to ±0.03 mm and weighs 11.2 kg.
The Flexiv Rizon 4 carries 4 kg over 876 mm, repeats to ±0.05 mm, weighs 20 kg and is rated IP65.
Main specification comparison
Specification | Universal Robots UR3e | Flexiv Rizon 4 |
Brand | Universal Robots | Flexiv |
Listed price | $33,800 | $32,000 |
Payload | 3 kg | 4 kg |
Reach | 500 mm | 876 mm |
Repeatability | ±0.03 mm | ±0.05 mm |
Axes | 6 | 7 |
Speed | 3 m/s maximum TCP speed | 1.0 m/s typical TCP linear speed |
Arm weight | 11.2 kg | 20 kg |
IP rating | IP54 | IP65 |
Controller | UR control box CB 5.5 / CB 5.6 | Flexiv Hesper robot controller (12 kg, 423 × 230 × 230 mm, IP20, 500 W) |
Price comparison
UR3e: listed from $33,800
Flexiv Rizon 4: listed from $32,000
Difference: $1,800
The Rizon 4 costs roughly 5% less
Axes, reach and payload
The Rizon 4 has 7 axes and reaches 876 mm, 376 mm more than the UR3e, with 1 kg more payload. The extra axis helps it work around fixtures while keeping the tool orientation.
Force control
Flexiv publishes 0.1 N force sensing accuracy and a 200 N maximum TCP force for the Rizon 4, which supports polishing, insertion and assembly with controlled contact. The UR3e has a built-in ±30 N / ±10 Nm force/torque sensor for standard insertion and screwdriving.
Precision, speed and weight
The UR3e publishes ±0.03 mm repeatability and a 3 m/s maximum tool speed. Flexiv publishes ±0.05 mm and a 1.0 m/s typical TCP linear speed. The UR3e weighs 11.2 kg, about half the Rizon 4, and suits benches and in-machine mounting.
Best applications for the UR3e
Compact benchtop assembly
Fast pick-and-place
Robots inside machines
Best applications for the Rizon 4
Force-controlled assembly and insertion
Polishing and finishing
Tasks around fixtures that benefit from 7 axes
UR3e advantages
11.2 kg arm
±0.03 mm repeatability
3 m/s maximum tool speed
UR3e limitations
500 mm reach
About $1,800 higher listed price
Rizon 4 advantages
7 axes and 876 mm reach
0.1 N force sensing accuracy
IP65
Rizon 4 limitations
20 kg arm
Separate 12 kg Hesper controller
Final verdict
Choose the Flexiv Rizon 4 for reach, a seventh axis and force control. Choose the UR3e for compact, precise and fast benchtop work.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR3e or the Flexiv Rizon 4?
The Rizon 4 is listed from $32,000 and the UR3e from $33,800, a difference of $1,800.
Which robot carries more?
The Rizon 4 carries 4 kg and the UR3e 3 kg.
Which robot has the longer reach?
The Rizon 4 reaches 876 mm and the UR3e 500 mm.
How many axes do they have?
The Rizon 4 has 7 axes and the UR3e 6.
Which robot is more precise?
The UR3e publishes ±0.03 mm repeatability and the Rizon 4 ±0.05 mm.
Which robot should I buy?
Choose the Rizon 4 for reach and force control. Choose the UR3e for compact benchtop work.
