UR5e vs RealMan RM65-B: 5 kg Cobot Comparison of Reach, Weight and Price
Updated: 8 hours ago
IN A NUTSHELL
🔎 THE KEY DIFFERENCE Both are compared at 5 kg. Universal Robots UR5e has the longer stated reach, which may help reach separated fixtures; it does not guarantee access at every tool angle. |
→ CONSIDER Universal Robots UR5e Consider it when extra reach is useful while the compared load capacity is the same. This article compares 5 kg with a published reach of 850 mm; include the gripper and part in the load. |
→ CONSIDER RealMan RM65-B Consider it when its stated load and reach already cover your task and its controls fit your equipment. 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 UR5e and the RealMan RM65-B both carry 5 kg. The UR5e reaches 240 mm further, repeats more tightly and is fully industrial. The RM65-B weighs 7.2 kg with its controller in the base and costs about 49% less.
Quick verdict. The UR5e is the better choice for production cells, with 850 mm reach, ±0.03 mm repeatability and a full industrial feature set. The RealMan RM65-B is the better choice for mobile and humanoid platforms, with a 7.2 kg arm, a 24 V DC supply and a listed price about 49% lower.
UR5e and RealMan RM65-B at a glance
The UR5e carries 5 kg over 850 mm, repeats to ±0.03 mm and weighs 20.6 kg.
The RealMan RM65-B carries 5 kg over 610 mm, repeats to ±0.05 mm and weighs 7.2 kg with the controller inside its base.
Main specification comparison
Specification | Universal Robots UR5e | RealMan RM65-B |
Brand | Universal Robots | RealMan |
Listed price | $35,000 | $17,910 |
Payload | 5 kg | 5 kg |
Reach | 850 mm | 610 mm |
Repeatability | ±0.03 mm | ±0.05 mm |
Axes | 6 | 6 |
Speed | 180°/s maximum joint speed on all six joints | TCP up to 1.8 m/s; joints 1-2: 180°/s; joints 3-6: 225°/s |
Arm weight | 20.6 kg | 7.2 kg |
IP rating | IP54 | Not specified |
Controller | UR control box CB 5.2 / CB 5.5 | Integrated in the robot base |
Price comparison
UR5e: listed from $35,000
RealMan RM65-B: listed from $17,910
Difference: $17,090
The RM65-B costs roughly 49% less
Reach and precision
Both arms carry 5 kg. The UR5e reaches 850 mm, 240 mm more, and publishes ±0.03 mm repeatability against ±0.05 mm. Machine tending and packaging over a full workstation favor the UR5e.
Weight and power
The RM65-B weighs 7.2 kg, about 13.4 kg less than the UR5e, runs from 24 V DC at a typical 150 W and houses its controller in a 107 mm base. That makes it practical for mobile bases, humanoid platforms and battery-powered robots.
Industrial features
The UR5e has a built-in 50 N / 10 Nm force/torque sensor, 17 configurable safety functions, IP54 and PROFINET with PROFIsafe, EtherNet/IP, Modbus TCP and ROS/ROS2, with UR+ accessories. RealMan publishes a 1.8 m/s tool speed for the RM65-B.
Best applications for the UR5e
Machine tending up to 5 kg
Force-controlled screwdriving
Packaging and kitting
Best applications for the RealMan RM65-B
Mobile and humanoid platforms
Battery-powered robots
Low-cost light handling
UR5e advantages
850 mm reach
±0.03 mm repeatability
Full industrial feature set
UR5e limitations
About $17,090 higher listed price
20.6 kg arm
RealMan RM65-B advantages
7.2 kg arm with integrated controller
24 V DC supply
About 49% lower listed price
RealMan RM65-B limitations
610 mm reach
±0.05 mm repeatability
Final verdict
Choose the UR5e for production cells. Choose the RealMan RM65-B for mobile and humanoid platforms at about half the price.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR5e or the RealMan RM65-B?
The RM65-B is listed from $17,910 and the UR5e from $35,000, a difference of $17,090.
Do both robots carry 5 kg?
Yes. Both are rated for 5 kg.
Which robot has the longer reach?
The UR5e reaches 850 mm and the RM65-B 610 mm.
Which robot is lighter?
The RM65-B weighs 7.2 kg and the UR5e 20.6 kg.
Which robot is more precise?
The UR5e publishes ±0.03 mm repeatability and the RM65-B ±0.05 mm.
Which robot should I buy?
Choose the UR5e for production. Choose the RM65-B for mobile platforms.
