UR3e vs SIASUN SCR5: Cobot Comparison of Payload, Axes and Price
The Universal Robots UR3e and the SIASUN SCR5 serve different cell sizes. The SCR5 carries 2 kg more, reaches 300 mm further, adds a seventh axis, repeats more tightly and costs about 47% less. The UR3e is a current, fully documented model.
Quick verdict. The SIASUN SCR5 offers more capability for less, with 5 kg payload, 800 mm reach, 7 axes and ±0.02 mm repeatability, but it is no longer part of the current SIASUN range. The UR3e is the better choice for production cells that need long-term support, with an 11.2 kg arm, a 3 m/s tool speed and a built-in force/torque sensor.
UR3e and SIASUN SCR5 at a glance
The UR3e carries 3 kg over 500 mm, repeats to ±0.03 mm and weighs 11.2 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 UR3e | SIASUN SCR5 |
Brand | Universal Robots | SIASUN |
Listed price | $33,800 | $18,000 |
Payload | 3 kg | 5 kg |
Reach | 500 mm | 800 mm |
Repeatability | ±0.03 mm | ±0.02 mm |
Axes | 6 | 7 |
Speed | 3 m/s maximum TCP speed | Not specified |
Arm weight | 11.2 kg | Not specified |
IP rating | IP54 | Not specified |
Price comparison
UR3e: listed from $33,800
SIASUN SCR5: listed from $18,000
Difference: $15,800
The SCR5 costs roughly 47% less
Payload, reach and axes
The SCR5 carries 5 kg against 3 kg, reaches 800 mm against 500 mm and has 7 axes, so it can reach around obstacles in compact cells. SIASUN designs it for precision assembly, packaging, polishing, testing and machine loading.
Precision
SIASUN publishes ±0.02 mm repeatability for the SCR5 against ±0.03 mm for the UR3e. Both suit precise assembly; the SCR5 adds payload and reach for heavier grippers.
Availability and features
The SCR5 is no longer part of the current SIASUN product range, so spare parts and support should be checked before buying. The UR3e is a current model with a 3 m/s maximum tool speed, a built-in ±30 N / ±10 Nm force/torque sensor, IP54 and UR+ accessories.
Best applications for the UR3e
Production benchtop assembly
Force-controlled insertion
Robots inside machines
Best applications for the SIASUN SCR5
Precision assembly up to 5 kg
Machine loading in compact cells
Budget pilot setups
UR3e advantages
Current model with UR+ ecosystem
11.2 kg arm
Built-in force/torque sensor
UR3e limitations
3 kg payload and 500 mm reach
About $15,800 higher listed price
SIASUN SCR5 advantages
5 kg payload and 800 mm reach
7 axes and ±0.02 mm repeatability
About 47% lower listed price
SIASUN SCR5 limitations
No longer in the current SIASUN range
Final verdict
Choose the SIASUN SCR5 for payload, precision and a seventh axis on a budget. Choose the UR3e for production work with long-term support.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR3e or the SIASUN SCR5?
The SCR5 is listed from $18,000 and the UR3e from $33,800, a difference of $15,800.
Which robot carries more?
The SCR5 carries 5 kg and the UR3e 3 kg.
Which robot has the longer reach?
The SCR5 reaches 800 mm and the UR3e 500 mm.
Which robot is more precise?
The SCR5 publishes ±0.02 mm repeatability and the UR3e ±0.03 mm.
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 SCR5 for capability on a budget. Choose the UR3e for long-term support.
