UR3e vs RealMan ECO65-B: Lightweight Cobot Comparison of Price and Payload
Updated: 8 hours ago
IN A NUTSHELL
🔎 THE KEY DIFFERENCE RealMan ECO65-B has the higher stated load capacity and longer stated reach. Those figures help shortlist it for heavier loads or wider layouts, but do not prove a faster production cycle. |
→ 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 RealMan ECO65-B Consider it when additional load capacity and reach matter. This article compares 5 kg with a published reach of 610 mm; include the gripper and part in the load. |
💡 THE TAKEAWAY Check the real tool, movement path and safety assessment before choosing. A collaborative label does not make every task safe without guarding; compare complete installation quotes. |
The Universal Robots UR3e and the RealMan ECO65-B are light arms for very different users. The ECO65-B carries 2 kg more, reaches further, weighs 7.8 kg with the controller in its base and costs about two-thirds less. The UR3e is more precise, faster and fully industrial.
Quick verdict. The RealMan ECO65-B is the better choice for mobile, battery-powered and low-cost platforms, with 5 kg payload, a 24 V DC supply and a listed price about 67% lower. The UR3e is the better choice for production benchtop work, with ±0.03 mm repeatability, a 3 m/s tool speed and a built-in force/torque sensor.
UR3e and RealMan ECO65-B at a glance
The UR3e carries 3 kg over 500 mm, repeats to ±0.03 mm and weighs 11.2 kg.
The RealMan ECO65-B carries 5 kg over 610 mm, repeats to ±0.05 mm and weighs 7.8 kg with the controller inside its base.
Main specification comparison
Specification | Universal Robots UR3e | RealMan ECO65-B |
Brand | Universal Robots | RealMan |
Listed price | $33,800 | $11,110 |
Payload | 3 kg | 5 kg |
Reach | 500 mm | 610 mm |
Repeatability | ±0.03 mm | ±0.05 mm |
Axes | 6 | 6 |
Speed | 3 m/s maximum TCP speed | TCP up to 1.8 m/s; joints 1-2: 180°/s; joints 3-6: 225°/s |
Arm weight | 11.2 kg | 7.8 kg |
IP rating | IP54 | Not specified |
Controller | UR control box CB 5.5 / CB 5.6 | Integrated in the robot base |
Price comparison
UR3e: listed from $33,800
RealMan ECO65-B: listed from $11,110
Difference: $22,690
The ECO65-B costs roughly 67% less
Weight, power and integration
The ECO65-B weighs 7.8 kg, runs from a 24 V DC supply with a typical draw of 150 W and houses its controller in a 107 mm base. That makes it practical for mobile robots, carts and battery-powered platforms. All six joints have mechanical brakes.
Payload and reach
The ECO65-B carries 5 kg against 3 kg and reaches 610 mm against 500 mm. Light handling, pick-and-place and research platforms suit it well.
Precision and industrial features
The UR3e publishes ±0.03 mm repeatability and a 3 m/s maximum tool speed, against ±0.05 mm and 1.8 m/s for the ECO65-B. It has a built-in ±30 N / ±10 Nm force/torque sensor, IP54 and PROFINET with PROFIsafe, EtherNet/IP, Modbus TCP and ROS/ROS2 support.
Best applications for the UR3e
Production benchtop assembly
Force-controlled insertion
Robots inside machines
Best applications for the ECO65-B
Mobile and battery-powered robots
Research and embodied-AI platforms
Low-cost light handling
UR3e advantages
±0.03 mm repeatability
3 m/s maximum tool speed
Built-in force/torque sensor
UR3e limitations
About $22,690 higher listed price
3 kg payload
ECO65-B advantages
About 67% lower listed price
7.8 kg arm with integrated controller
24 V DC supply
ECO65-B limitations
±0.05 mm repeatability
IP rating not listed in the reviewed specification
Final verdict
Choose the RealMan ECO65-B for mobile and low-cost platforms. Choose the UR3e for precise production work.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR3e or the RealMan ECO65-B?
The ECO65-B is listed from $11,110 and the UR3e from $33,800, a difference of $22,690.
Which robot carries more?
The ECO65-B carries 5 kg and the UR3e 3 kg.
Which robot is lighter?
The ECO65-B weighs 7.8 kg and the UR3e 11.2 kg.
Which robot is more precise?
The UR3e publishes ±0.03 mm repeatability and the ECO65-B ±0.05 mm.
Can the ECO65-B run on batteries?
It runs from a 24 V DC supply with a typical 150 W draw, which suits battery-powered platforms.
Which robot should I buy?
Choose the ECO65-B for mobile and low-cost platforms. Choose the UR3e for production.
