Head to head
FANUC M-20iA vs KUKA KR 20 R3100
A specification duel across payload, reach, precision, and footprint, with a plain read on which arm suits which job.
General-purpose mid arm for handling and welding
Extended reach robot for large envelope handling tasks
Specification duel
Green marks the stronger figure. Unconfirmed specs are shown but not scored.
The verdict
The specs separate them here: the KUKA KR 20 R3100 reaches farther, 3101 mm to 1811 mm. If precision drives the job, the FANUC M-20iA holds the tighter repeatability at ±0.03 mm. They run different controllers, the FANUC M-20iA on the R-30iB Plus and the KUKA KR 20 R3100 on the KR C5, so whichever platform your team already programs and stocks parts for is a real tiebreaker. For a tight or overhead cell, the KUKA KR 20 R3100 lists Wall mounting, which the other does not. Both are aimed at material handling and machine tending, with the FANUC M-20iA stretching to arc welding and assembly and the KUKA KR 20 R3100 to packaging and dispensing.
- Excellent speed-to-payload ratio
- IP67 wrist tolerates weld spatter and coolant
- Wide selection of mounting orientations
- Mature platform with deep integrator familiarity
- Exceptional reach for its payload class
- Good choice for servicing multiple stations
- Solid repeatability at full extension
- Ceiling mount option saves floor space
Common questions
- Which has more payload, the FANUC M-20iA or the KUKA KR 20 R3100?
- The FANUC M-20iA and KUKA KR 20 R3100 match at 20 kg.
- Which reaches farther?
- The KUKA KR 20 R3100 has more reach at 3101 mm versus 1811 mm.
- Which is more precise?
- The FANUC M-20iA holds tighter repeatability at ±0.03 mm.
- Should I choose the FANUC M-20iA or the KUKA KR 20 R3100?
- Match the pick to the job. The FANUC M-20iA is a 6-axis industrial arm at 20 kg and 1811 mm. The KUKA KR 20 R3100 is a 6-axis industrial arm at 20 kg and 3101 mm.