UR5e vs SIASUN SCR5: 5 kg Cobot Comparison of Precision, Axes and Price
The Universal Robots UR5e and the SIASUN SCR5 both carry 5 kg. The UR5e reaches 50 mm further and is a current, fully documented model. The SCR5 adds a seventh axis, repeats more tightly and costs about 49% less, but it has left the SIASUN range.
Quick verdict. The UR5e is the better choice for production cells, with 850 mm reach, a force/torque sensor, documented safety data and long-term support. The SIASUN SCR5 offers 7 axes and ±0.02 mm repeatability at about half the price for precise work where availability is not critical.
UR5e and SIASUN SCR5 at a glance
The UR5e carries 5 kg over 850 mm, repeats to ±0.03 mm and weighs 20.6 kg.
The SIASUN SCR5 carries 5 kg over 800 mm with 7 axes and repeats to ±0.02 mm.
Main specification comparison
Specification | Universal Robots UR5e | SIASUN SCR5 |
Brand | Universal Robots | SIASUN |
Listed price | $35,000 | $18,000 |
Payload | 5 kg | 5 kg |
Reach | 850 mm | 800 mm |
Repeatability | ±0.03 mm | ±0.02 mm |
Axes | 6 | 7 |
Speed | 180°/s maximum joint speed on all six joints | Not specified |
Arm weight | 20.6 kg | Not specified |
IP rating | IP54 | Not specified |
Price comparison
UR5e: listed from $35,000
SIASUN SCR5: listed from $18,000
Difference: $17,000
The SCR5 costs roughly 49% less
Reach, axes and precision
Both arms carry 5 kg. The UR5e reaches 850 mm, 50 mm more. The SCR5 has 7 axes for reaching around obstacles and publishes ±0.02 mm repeatability against ±0.03 mm for the UR5e.
Availability and support
The SCR5 is no longer part of the current SIASUN product range, so spare parts and long-term support should be checked before buying. The UR5e is a current model with the UR+ ecosystem and a wide integrator base.
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 support. The reviewed SCR5 specification does not list speed, weight or IP rating.
Best applications for the UR5e
Machine tending in production
Force-controlled screwdriving
Packaging with UR+ tools
Best applications for the SIASUN SCR5
Precision assembly in compact cells
Polishing and testing
Budget pilot setups
UR5e advantages
Current model with UR+ ecosystem
850 mm reach
Built-in force/torque sensor
UR5e limitations
About $17,000 higher listed price
6 axes
SIASUN SCR5 advantages
7 axes and ±0.02 mm repeatability
About 49% lower listed price
SIASUN SCR5 limitations
No longer in the current SIASUN range
Final verdict
Choose the UR5e for production work with long-term support. Choose the SIASUN SCR5 for precision and a seventh axis on a budget.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR5e or the SIASUN SCR5?
The SCR5 is listed from $18,000 and the UR5e from $35,000, a difference of $17,000.
Do both robots carry 5 kg?
Yes. Both are rated for 5 kg.
Which robot is more precise?
The SCR5 publishes ±0.02 mm repeatability and the UR5e ±0.03 mm.
How many axes do they have?
The SCR5 has 7 axes and the UR5e 6.
Is the SIASUN SCR5 still in production?
The SCR5 is no longer part of the current SIASUN product range.
Which robot should I buy?
Choose the UR5e for production. Choose the SCR5 for precision on a budget.
