UR5e vs Kassow Robots KR1805: 5 kg Cobot Comparison of Reach and Price
The Universal Robots UR5e and the Kassow Robots KR1805 both carry 5 kg and are rated IP54. The KR1805 reaches more than twice as far and adds a seventh axis. The UR5e repeats a little more tightly, has built-in force sensing and costs about 27% less.
Quick verdict. The Kassow Robots KR1805 is the better choice for long-reach tasks, with 1800 mm reach and 7 axes. The UR5e is the better choice for standard machine tending, assembly and packaging, with ±0.03 mm repeatability, a 50 N / 10 Nm force/torque sensor and a listed price about 27% lower.
UR5e and Kassow KR1805 at a glance
The UR5e carries 5 kg over 850 mm, repeats to ±0.03 mm and weighs 20.6 kg.
The Kassow Robots KR1805 carries 5 kg over 1800 mm with 7 axes, repeats to ±0.04 mm and is rated IP54.
Main specification comparison
Specification | Universal Robots UR5e | Kassow Robots KR1805 |
Brand | Universal Robots | Kassow Robots |
Listed price | $35,000 | $48,100 |
Payload | 5 kg | 5 kg |
Reach | 850 mm | 1800 mm |
Repeatability | ±0.03 mm | ±0.04 mm |
Axes | 6 | 7 |
Speed | 180°/s maximum joint speed on all six joints | up to 225 deg/s |
Arm weight | 20.6 kg | Not specified |
IP rating | IP54 | IP54 |
Price comparison
UR5e: listed from $35,000
Kassow Robots KR1805: listed from $48,100
Difference: $13,100
The UR5e costs roughly 27% less
Reach and axes
Both arms carry 5 kg. The KR1805 reaches 1800 mm, 950 mm more than the UR5e, and its seventh axis lets it reach around obstacles. One KR1805 can serve several machines or large parts that would otherwise need a linear track.
Precision and footprint
The UR5e publishes ±0.03 mm repeatability against ±0.04 mm for the KR1805. The KR1805 mounts on a 160 × 160 mm footprint, and Kassow publishes joint speeds of up to 225 deg/s.
Sensing and ecosystem
The UR5e has a built-in 50 N / 10 Nm force/torque sensor and 17 configurable safety functions, weighs 20.6 kg and runs PolyScope with PROFINET, EtherNet/IP, Modbus TCP, ROS/ROS2 and UR+ accessories.
Best applications for the UR5e
Standard machine tending
Force-controlled screwdriving
Packaging and kitting
Best applications for the Kassow KR1805
Long-reach machine tending
Light palletizing
Dispensing and inspection of large parts
UR5e advantages
±0.03 mm repeatability
Built-in force/torque sensor
About 27% lower listed price
UR5e limitations
850 mm reach
6 axes
Kassow KR1805 advantages
1800 mm reach
7 axes
160 × 160 mm footprint
Kassow KR1805 limitations
About $13,100 higher listed price
Final verdict
Choose the Kassow Robots KR1805 when one arm must cover a large area. Choose the UR5e for standard cells, force control and a lower price.
Sources and further reading
Frequently asked questions
Which is cheaper, the UR5e or the Kassow Robots KR1805?
The UR5e is listed from $35,000 and the KR1805 from $48,100, a difference of $13,100.
Do both robots carry 5 kg?
Yes. Both are rated for 5 kg.
Which robot has the longer reach?
The KR1805 reaches 1800 mm and the UR5e 850 mm.
Which robot is more precise?
The UR5e publishes ±0.03 mm repeatability and the KR1805 ±0.04 mm.
How many axes do they have?
The KR1805 has 7 axes and the UR5e 6.
Which robot should I buy?
Choose the KR1805 for long reach. Choose the UR5e for standard cells and price.
