Used Industrial Robot
FANUC
M-900iB/400L
Highest-Payload Long-Reach M-900iB Robot
Overview
FANUC M-900iB/400L
The FANUC M-900iB/400L is the highest-payload variant in the M-900iB series, handling 400 kg over a 3,595 mm reach. It represents the upper boundary of what a single articulated floor-mounted robot can transfer — 400 kg of payload through a 3.6-meter work envelope — making it the choice for the heaviest automotive press transfers, large aerospace structural components, and industrial applications where no lighter robot can meet both the payload and reach requirements simultaneously.
The M-900iB/400L carries the M-900iB platform’s mechanical improvements over the iA series into its highest payload configuration. At 4,300 kg robot weight, the installation requires substantial foundation engineering, but the resulting capability eliminates the need for overhead gantry systems in applications where floor-based automation is preferred. Joint speeds are tuned for reliable, controlled motion of 400 kg loads — prioritizing structural integrity and accuracy over the cycle speeds of lighter robots.
Compatible with R-30iA and R-30iB Plus controllers in A-size cabinets, the M-900iB/400L supports the full FANUC software suite. Collision Guard is essential at this payload and reach level, protecting tooling and fixtures from the significant forces that a 400 kg load generates in a collision event. ROBOGUIDE simulation is critical for path verification and reach confirmation before committing to foundation and installation engineering on a robot of this scale.
Buying a M-900iB/400L from iGAM means working with a team that tests the equipment it sells. Every robot is powered on, axes are exercised through their full range of motion, and alarm history is reviewed at our Detroit warehouse before the unit ships. iGAM also operates as a service resource for customers with M-900iB/400L units already in the field — offering maintenance, reconditioning, component-level repair, and full refurbishment for robots that have been underperforming or have come out of a decommissioned cell. Contact us to discuss what level of service your application requires.
Key Specifications
Payload400 kg
Reach3,595 mm
Axes6
Repeatability0.3 mm
Robot Weight4,300 kg
MountingFloor
Inventory
Available FANUC M-900iB/400L Units
Specifications
Full Technical Specifications
| General Specifications | |
| Controlled Axes | 6 |
| Structure | Articulated |
| Mounting Options | Floor |
| Payload | 400 kg |
| H-Reach | 3595 mm |
| Repeatability | ±0.3 mm |
| Robot Weight | 4300 kg |
| Technical Details | |
| Body Protection Class | IP54 (IP55 optional) |
| Wrist & J3 Protection | IP67 |
| Compatible Controllers | R-30iA, R-30iB Plus |
| Cabinet Size Options | A-cabinet |
| Teach Pendant Options | iPendant, iPendant Touch |
| Motion Range | |
| J1 Motion Range | ±185° |
| J2 Motion Range | +75°/-55° |
| J3 Motion Range | +190°/-80° |
| J4 Motion Range | ±360° |
| J5 Motion Range | ±125° |
| J6 Motion Range | ±720° |
| Maximum Speed | |
| J1 Max Speed | 70°/s |
| J2 Max Speed | 70°/s |
| J3 Max Speed | 75°/s |
| J4 Max Speed | 105°/s |
| J5 Max Speed | 105°/s |
| J6 Max Speed | 145°/s |
Applications
Common Applications
The FANUC M-900iB/400L is well-suited for a range of industrial automation applications. Select the application below most relevant to your production needs.
Material Handling
High-speed pick, place, and transfer of parts between production cells.
Palletizing
High-throughput layer building and pallet stacking for end-of-line operations.
Press Tending
Automated stamping press, forging cell, and hot/cold forming integration.
Why iGAM
The iGAM Difference
Inspected & Tested
Every robot is powered on and run through full axis testing before it ships. No surprises on arrival.
Warranty Available
90-day standard warranty on reconditioned units. Extended coverage available on select inventory.
Freight Assistance
In-house crating and freight coordination from our Detroit warehouse. We ship nationwide.
Expert Support
Talk directly to a robot specialist — not a call center. We know the equipment we sell.
Ready to source a FANUC M-900iB/400L?
Our team typically responds within one business day with availability and pricing.