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Robot battle · Sourced specifications

UR20 vs UR30

UR20 and UR30 share a Ø245 mm footprint, an EN ISO 9409-1-80-6-M8 flange, joint speeds, force/torque sensor, ±0.1 mm repeatability and 750 W maximum power. The choice is reach against payload.

UR20 reaches 1,750 mm with 20 kg (25 kg with boundary conditions); UR30 reaches 1,300 mm with 30 kg (35 kg with boundary conditions).

Editorial source check: 9 October 2026. Specialist technical review: not yet performed. Why we say this

At a glance

Universal Robots

UR20

Maximum payload
20 kg
Reach
1,750 mm
Pose repeatability
±0.1 mm (ISO 9283)
Maximum TCP speed
5 m/s
Joint working ranges
±360° on all six joints

Universal Robots

UR30

Maximum payload
30 kg
Reach
1,300 mm
Pose repeatability
±0.1 mm (ISO 9283)
Maximum TCP speed
4 m/s
Joint working ranges
±360° on all six joints

Specification by specification

Source on every row
SpecificationUniversal Robots UR20Universal Robots UR30
Maximum payloadWhat is this?20 kg [1]Universal Robots lists 25 kg with boundary conditions set out in the manual.30 kg [3]Universal Robots lists 35 kg with boundary conditions set out in the manual.
ReachWhat is this?1,750 mm [1]1,300 mm [3]
Pose repeatabilityWhat is this?±0.1 mm (ISO 9283) [1]±0.1 mm (ISO 9283) [3]
Maximum TCP speedWhat is this?5 m/s [1]4 m/s [3]
Joint working rangesWhat is this?±360° on all six joints [1]±360° on all six joints [3]
Maximum joint speeds±120°/s (base, shoulder); ±150°/s (elbow); ±210°/s (wrists) [1]±120°/s (base, shoulder); ±150°/s (elbow); ±210°/s (wrists) [3]
Robot arm weight64 kg [1]63.5 kg [3]
FootprintØ245 mm [1]Ø245 mm [3]
Tool flangeWhat is this?EN ISO 9409-1-80-6-M8 [1]EN ISO 9409-1-80-6-M8 [3]
Force range at the tool flange±200.0 N [1]±200.0 N [3]
Torque range at the tool flange±20.0 Nm [1]±20.0 Nm [3]
Maximum power consumption750 W [1]750 W [3]
Ingress protectionIP65 [1]IP65 [3]
Cleanroom classificationClass 4 at ≤80% velocity and payload [1]Class 4 at ≤80% velocity and payload [3]
Noise< 65 dB(A) [1]< 67 dB(A) [3]

Where UR20 leads on published figures

  • Longer published reach: 1,750 mm against 1,300 mm.
  • Higher published maximum TCP speed: 5 m/s against 4 m/s.
  • Lower published noise figure: < 65 dB(A) against < 67 dB(A).

Where UR30 leads on published figures

  • Higher published payload: 30 kg against 20 kg (35 kg against 25 kg with boundary conditions).

What cannot fairly be compared

  • Boundary-condition payloads (25 kg and 35 kg) apply only under the conditions set out in Universal Robots' manual, not across the whole envelope.
  • Both arms share joint speeds, footprint, flange, force/torque sensor and controller, so the published figures reduce the decision to reach against payload.

Questions to answer before choosing

  1. What is the furthest pick or place point, measured from the base, including the tool?
  2. What is the heaviest load at that point, and does it fall within the standard payload or only the boundary-condition figure?
  3. Will tooling move between these arms and the 50 mm-flange e-Series arms? The 80 mm flange may need adaptors.
  4. Does the cell need cleanroom operation at more than 80% velocity and payload?

This comparison uses manufacturer documentation only. RoboMag has not tested either arm, and the published figures are not a performance ranking.

UR20 full specifications UR30 full specifications Compare other machines

Sources for every value

  1. [1] UR20 technical specification (online datasheet)Universal Robots · Updated September 2026 · accessed 9 October 2026
  2. [2] DH parameters for calculations of kinematics and dynamicsUniversal Robots · Support article; UR5e/UR7e table · accessed 8 October 2026
  3. [3] UR30 technical specification (online datasheet)Universal Robots · Updated September 2026 · accessed 9 October 2026