Head to head
FANUC M-20iA vs Kawasaki RS020N
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
General purpose robot for handling and machine tending
Specification duel
Green marks the stronger figure. Unconfirmed specs are shown but not scored.
The verdict
On paper these two are close, both carry 20 kg and 1811 mm against 1725 mm of reach, near enough that the spec sheet alone will not decide it. They run different controllers, the FANUC M-20iA on the R-30iB Plus and the Kawasaki RS020N on the F01 / E01, so whichever platform your team already programs and stocks parts for is a real tiebreaker. Mounting options differ: the FANUC M-20iA lists Floor, Ceiling, and Angle, and the Kawasaki RS020N lists Floor and Ceiling. Both are aimed at material handling and machine tending, with the FANUC M-20iA stretching to arc welding and assembly and the Kawasaki RS020N to packaging.
Choose this one when
Job fit first, then the controller and cell constraints that decide which arm you can actually install.
Choose the FANUC M-20iA when
- Excellent speed-to-payload ratio
- IP67 wrist tolerates weld spatter and coolant
- Wide selection of mounting orientations
- Mature platform with deep integrator familiarity
Watch for
- Reach is modest for large-part transfer
- Outperformed by lighter arms on pure pick-and-place cycle time
Choose the Kawasaki RS020N when
- Solid general purpose payload and reach balance
- Reliable in continuous multi shift use
- Ceiling mount option for flexible layouts
- Straightforward integration with common end effectors
Watch for
- Mid payload limits heavier tooling
- Reach is moderate compared to specialty long reach models
Controller ecosystem
Programming habits, spare parts, and pendant familiarity often decide the pick when payloads are close.
- Brand
- FANUC
- Controller
- R-30iB Plus
- Class
- 6-axis industrial
Service, spares, and pendant training for the FANUC M-20iA run through FANUC's R-30iB Plus stack.
- Brand
- Kawasaki
- Controller
- F01 / E01
- Class
- 6-axis industrial
Service, spares, and pendant training for the Kawasaki RS020N run through Kawasaki's F01 / E01 stack.
These arms run different controllers (R-30iB Plus vs F01 / E01). If your team already programs one of them, retraining programmers and stocking a second set of spares usually costs more than a small payload or reach advantage on paper.
Mounting, footprint, and mass
How the arm can be oriented in the cell, and how much mass you have to mount.
| Field | FANUC M-20iA | Kawasaki RS020N |
|---|---|---|
| Mounting | Floor, Ceiling, and Angle | Floor and Ceiling |
| Robot mass | 250 kg | 230 kg |
| Protection (IP) | IP67 wrist & J3 arm / IP54 body (IP55 optional) | IP67 wrist / IP65 base axis |
Heavier arms want stiffer bases and more clearance around the swept volume, and they push freight and rigging costs up on the install. IP ratings only cover the section they name, so a wrist-only rating protects the wrist and nothing else; check the body rating separately before you commit the arm to a washdown or dusty cell.
Application fit
Where each arm is aimed, based on the applications listed on its robot page.
Both pages list material handling and machine tending, with the differences below.
FANUC M-20iA also covers
Kawasaki RS020N also covers
Speed and cycle-time planning
Speed is rarely a single datasheet number across brands. Use payload, reach, and class as the planning frame, then confirm cycle time in a path study.
The FANUC M-20iA is a 6-axis industrial arm rated 20 kg at 1811 mm with ±0.03 mm repeatability. The Kawasaki RS020N is a 6-axis industrial arm rated 20 kg at 1725 mm with ±0.04 mm. Class changes how speed shows up in a cell: collaborative arms slow down near people and can speed up in a guarded mode, while industrial arms run at rated speed inside a fence or scanner field. Which arm cycles faster on your part depends on the path, the payload, and the safeguarding, so confirm the takt with a path study before you quote it.
Common questions
- Which has more payload, the FANUC M-20iA or the Kawasaki RS020N?
- The FANUC M-20iA and Kawasaki RS020N match at 20 kg.
- Which reaches farther?
- The FANUC M-20iA has more reach at 1811 mm versus 1725 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 Kawasaki RS020N?
- Match the pick to the job. The FANUC M-20iA is a 6-axis industrial arm at 20 kg and 1811 mm. The Kawasaki RS020N is a 6-axis industrial arm at 20 kg and 1725 mm.
- Do the FANUC M-20iA and Kawasaki RS020N use the same controller?
- No. The FANUC M-20iA uses R-30iB Plus and the Kawasaki RS020N uses F01 / E01.
- How do the IP ratings compare?
- The FANUC M-20iA is rated IP67 wrist & J3 arm / IP54 body (IP55 optional). The Kawasaki RS020N is rated IP67 wrist / IP65 base axis. Check wrist versus body coverage before washdown or dusty cells.