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Universal Robots UR18

The UR18 is a six-axis collaborative industrial robot arm from Universal Robots. It has an 18 kg payload, a 950 mm reach, and a maximum TCP speed of 4 m/s. It is programmed through a 12-inch touchscreen with the PolyScope graphical user interface and provides 23 configurable safety functions.

Source checked38/38 values · 2026-10-25Universal RobotsCollaborative robot
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18 kg payloadR 9506-AXIS ARMREPEATABILITY ±0.05 mm0400800mmUR18 · SIDE ELEVATIONReach envelope to scale · pose schematic
Payload
18kg
Reach
950mm
Repeatability
±0.05mm
Max TCP speed
4,000mm/s
IP rating
IP65

Specification

2 sources
Categorycollaborative robot
Axes6
Weight39.2 kg
Power consumption0.57 kW
Operating temp min0 °C
Operating temp max50 °C

Joints

NameRange min (°)Range max (°)Max speed (°/s)
Base-360360180
Shoulder-360360180
Elbow-360360240
Wrist 1-360360300
Wrist 2-360360300
Wrist 3-360360300

Motion range per axis

arc = published range
Base
720°180°/s
Shoulder
720°180°/s
Elbow
720°240°/s
Wrist 1
720°300°/s
Wrist 2
720°300°/s
Wrist 3
720°300°/s

Quick answers

What is the payload of the Universal Robots UR18?
18 kg, per UR18 - The compact heavy-duty cobot (universal-robots.com).
What is the reach of the Universal Robots UR18?
950 mm, per UR18 - The compact heavy-duty cobot (universal-robots.com).
What is the repeatability of the Universal Robots UR18?
±0.05 mm, per UR18 - The compact heavy-duty cobot (universal-robots.com).
How many axes does the Universal Robots UR18 have?
6, per UR18 - The compact heavy-duty cobot (universal-robots.com).
How much does the Universal Robots UR18 weigh?
39.2 kg, per UR18 - The compact heavy-duty cobot (universal-robots.com).
What is the IP rating of the Universal Robots UR18?
IP65, per UR18 - The compact heavy-duty cobot (universal-robots.com).
What is the maximum TCP speed of the Universal Robots UR18?
4000 mm/s, per UR18 - The compact heavy-duty cobot (universal-robots.com).

Study notes

  • Joint architecture is 2-1-3.
  • Force sensing at the tool flange measures force x-y-z and torque x-y-z; range ±150.0 N and ±10.0 Nm, precision ±7.5 N and ±0.2 Nm, accuracy ±8.3 N and ±0.5 Nm.
  • Programming is via a 12-inch touchscreen with PolyScope graphical user interface.
  • Tool flange is EN ISO 9409-1-50-4-M6; connector is M8 8-pin female; robot arm cable length is 6 m.
  • Control box provides 16 digital in, 16 digital out, 2 analog in, 2 analog out and 4 quadrature digital inputs; I/O supply is 24 V, 2 A.
  • Control box weight is 12 kg; dimensions are 460 x 449 x 254 mm; power source is 100-240 VAC, 47-440 Hz.
  • Control box is IP44; teach pendant is IP54.
  • Teach pendant display resolution is 1280 x 800 pixels; cable length is 4.5 m; weight is 1.8 kg including 1 m of cable.
  • The control box lists PROFIsafe and ROS/ROS2 among its industrial protocols.
  • Robot arm footprint is Ø204 mm.

Safety

  • 23 configurable safety functions are provided.
  • Compliance is stated with EN ISO 13849-1 (PLd Category 3), EN ISO 10218-1 and UL 1740.
  • Operating ambient temperature range is 0 to 50 °C.
  • Operating humidity limit is ≤90% RH non-condensing.
  • Noise level is <67 dB(A).
  • The LED light ring has three default configurations to comply with ISO 10218; the user can switch the light off.
  • The tool connector is described as safety-ready architecture.
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