UR20 vs JAKA Zu 18: Heavy-Payload Cobot Comparison of Reach, Speed and Price
The Universal Robots UR20 and the JAKA Zu 18 carry similar loads but cover very different areas. The UR20 reaches 677 mm further, is faster and rated IP65. The Zu 18 is more precise, about half the weight and half the price.
Quick verdict. The UR20 is the better choice for palletizing and long-reach handling, with 20 kg payload, 1750 mm reach, a 5 m/s tool speed and IP65. The JAKA Zu 18 is the value choice for compact heavy handling, with ±0.03 mm repeatability, a 35 kg arm and a listed price about 50% lower.
UR20 and JAKA Zu 18 at a glance
The UR20 carries 20 kg over 1750 mm, repeats to ±0.1 mm, weighs 64 kg and is rated IP65.
The JAKA Zu 18 carries 18 kg over 1073 mm, repeats to ±0.03 mm, weighs 35 kg and is rated IP54.
Main specification comparison
Specification | Universal Robots UR20 | JAKA Zu 18 |
Brand | Universal Robots | JAKA |
Listed price | $72,100 | $36,000 |
Payload | 20 kg | 18 kg |
Reach | 1750 mm | 1073 mm |
Repeatability | ±0.1 mm | ±0.03 mm |
Axes | 6 | 6 |
Speed | 5 m/s maximum TCP speed | 3.5 m/s |
Arm weight | 64 kg | 35 kg |
IP rating | IP65 | IP54 |
Controller | UR control box CB 5.5 / CB 5.6 | JAKA StandardCab control cabinet |
Price comparison
UR20: listed from $72,100
JAKA Zu 18: listed from $36,000
Difference: $36,100
The JAKA Zu 18 costs roughly 50% less
Reach and payload
The UR20 carries 20 kg, 2 kg more, and reaches 1750 mm, 677 mm more than the Zu 18. That covers full-height pallets and wide conveyor layouts that the Zu 18 cannot reach from one position.
Precision, speed and protection
JAKA publishes ±0.03 mm repeatability for the Zu 18 against ±0.1 mm for the UR20. Universal Robots publishes a 5 m/s maximum tool speed for the UR20 against 3.5 m/s for the Zu 18, and rates the UR20 IP65 and ISO Class 4.
Weight and sensing
The Zu 18 weighs 35 kg, about 29 kg less than the UR20, which simplifies pedestals and relocation. The UR20 has a built-in ±200 N / ±20 Nm force/torque sensor and supports PROFINET with PROFIsafe, EtherNet/IP, Modbus TCP and ROS/ROS2.
Best applications for the UR20
Palletizing up to full pallet height
Long-reach heavy handling
Wet or dusty areas that need IP65
Best applications for the JAKA Zu 18
Machine loading with heavy parts
Compact box handling
Budget-conscious heavy cells
UR20 advantages
1750 mm reach and 20 kg payload
5 m/s speed
IP65 and force/torque sensor
UR20 limitations
About $36,100 higher listed price
64 kg arm
JAKA Zu 18 advantages
About 50% lower listed price
±0.03 mm repeatability
35 kg arm
JAKA Zu 18 limitations
1073 mm reach
IP54 rating
Final verdict
Choose the UR20 for palletizing and long-reach heavy handling. Choose the JAKA Zu 18 for precise compact heavy handling at half the price.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR20 or the JAKA Zu 18?
The JAKA Zu 18 is listed from $36,000 and the UR20 from $72,100, a difference of $36,100.
Which robot carries more?
The UR20 carries 20 kg and the JAKA Zu 18 18 kg.
Which robot has the longer reach?
The UR20 reaches 1750 mm and the JAKA Zu 18 1073 mm.
Which robot is more precise?
The JAKA Zu 18 publishes ±0.03 mm repeatability and the UR20 ±0.1 mm.
Which robot is better for palletizing?
The UR20, thanks to its 1750 mm reach and 20 kg payload.
Which robot should I buy?
Choose the UR20 for palletizing. Choose the JAKA Zu 18 for compact heavy handling on a budget.
