FANUC M-20iA is a legacy medium-payload six-axis robot family for machine tending, material handling, dispensing, finishing, assembly, and part transfer.
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FANUC M-20iA is a legacy six-axis industrial robot family designed for medium-payload material handling, machine tending, dispensing, assembly, finishing, and part transfer.
Variants include long-reach 12 kg models near 2,009 mm, 20 kg configurations around 1,813 mm, and high-inertia 35 kg versions with different wrists and work envelopes.
It is strongest where hollow-arm cable routing, fast handling, established FANUC programs, and compatibility with an existing cell justify retaining an earlier robot generation.
As a legacy family, M-20iA remains most relevant to established FANUC cells where its hollow-arm routing, tooling, programs, and controller compatibility justify retaining the earlier platform.
Variants span approximately 12–35 kg for different handling requirements.
Long-arm and standard versions provide different work envelopes.
Protects process cables and reduces interference around tooling.
Selected variants support larger grippers and demanding machine-tending loads.
Many models support floor, ceiling, or angled cell layouts.
Existing fixtures, programs, dress packs, and service knowledge may retain value.
Industrial robot arm family
Material handling and machine tending
Indoor industrial spaces
Legacy M-20iA family; the M-20iD range is the current FANUC alternative
12–35 kg, depending on variant
1,813–2,009 mm, depending on variant
Fixed robotic arm; floor, wall, angled and inverted options varied by model
Application-specific grippers, welding torches and process tools
Axis and process speeds vary across the M-20iA family
Mains powered
Electric through the FANUC industrial robot controller
Controller and teach pendant
Joint encoders; FANUC vision, force sensing and process sensors were optional
Family-level entry; overall dimensions and work envelope require the exact M-20iA variant
Approx. 250–252 kg, depending on variant



The FANUC M-20iA price depends mainly on condition, controller, hours, refurbishment, included tooling and the seller’s warranty because this is a legacy model rather than a standard current-production purchase. Used listings can vary widely and a low arm-only price may exclude the matching controller, teach pendant, cables, licences, freight, installation and recommissioning.
The real cost should include inspection, transport, rigging, replacement batteries, preventive maintenance, safety upgrades, programming, integration and spare parts. A refurbished system with documented testing may be more valuable than an unverified auction unit. Ask for the complete nameplate, serial numbers, controller generation, operating hours, collision history and a written scope.
You can request a FANUC M-20iA sourcing or replacement review through Anton Robots before buying. The final decision should be documented with the exact serialised equipment, inspection result, integration scope, acceptance criteria and named party responsible for after-sales support.
You can search for a FANUC M-20iA through Anton Robots, specialist used-robot dealers, refurbishment companies, industrial auctions and existing installed bases. FANUC lists M-20iA models as legacy products no longer in production; current projects use later M-20iB and M-20iD families. Anton Robots can help buyers compare a verified used system with current replacement robots, but availability depends on the secondary market and should not be described as normal new-product stock.
Before purchasing, confirm the exact mechanical variant, controller, teach pendant, software, cables, condition, refurbishment work, warranty and local support. For a production project, also verify whether the seller can perform load testing, installation, program conversion and acceptance testing.
Contact Anton Robots to review the safest buying route. Because FANUC M-20iA is no longer a normal current-production purchase, ask the seller to distinguish original equipment, replaced components and unsupported assumptions. A compatible-looking arm can still require controller work, safety upgrades or program conversion. The purchase should proceed only after the complete system and service route have been verified.
A FANUC M-20iA for sale is most likely to appear through used automation dealers, robot refurbishers, factory liquidations and industrial equipment marketplaces. The model name alone is not enough. Request photos of the nameplate, serial number, controller cabinet, teach pendant, cables and wrist flange, plus operating hours, alarm history, maintenance records and a video under motion.
Check whether the listing is an arm only or a complete working system. Missing licences, cables or controller hardware can make a cheap unit expensive to recommission. Compare the used offer with FANUC M-20iB/25, M-20iD/25, M-20iD/12L or another current medium-payload robot sized to the exact process before buying. Anton Robots can help review the total cost and support risk.
Before paying a deposit, compare photographs and documentation against the exact FANUC nameplate and mechanical-unit manual. Ask who owns the equipment, whether it is still installed, and whether a witnessed power-on test is possible. A dismantled robot with no test history should carry a substantially higher risk allowance.
Yes. You can request a sourcing, refurbishment or replacement quote for the FANUC M-20iA through Anton Robots. Because the model is legacy, the quotation should identify the exact arm and controller, serial numbers, condition, refurbishment standard, included cables and pendant, software backup, tooling, safety equipment, transport, installation, recommissioning, training and warranty.
It should state whether the robot has been load-tested, how repeatability was checked and which components were replaced. A separate comparison with a current robot is useful when downtime, energy use, safety functions or long-term parts availability matter.
Do not accept a quote that simply says “used robot” without a documented scope and acceptance criteria. The quotation should state a validity period because used inventory can sell quickly, but urgency should not replace technical due diligence. Require serial-number-specific documentation, clear payment milestones and the right to reject the system if it fails the agreed inspection or functional acceptance test. The final decision should be documented with the exact serialised equipment, inspection result, integration scope, acceptance criteria and named party responsible for after-sales support.
There is no single standard current factory package for the FANUC M-20iA. A used offer may include only the mechanical arm or a more complete system. Confirm whether the seller provides:
Also verify voltage, controller language, safety hardware and compatibility with the intended tooling. Missing components can exceed the apparent savings of the used arm. Request an itemised package through Anton Robots before committing.
For installed-cell compatibility, also check base bolt pattern, cable lengths, controller voltage, fieldbus, safety circuits, tooling flange and program version. These details determine whether the robot can be integrated economically. Missing a single proprietary cable, licence or pendant can delay recommissioning and materially change the project cost. For production use, include a contingency for unavailable parts, controller failure and the possibility that the system cannot pass the required acceptance test.
A seller may agree to ship a used FANUC M-20iA internationally, but that does not guarantee the robot can be safely commissioned or supported in the destination country. Confirm voltage, controller configuration, export controls, specialist crating, insurance, customs, unloading, rigging and local service.
Older robots may have limited parts availability or software support, and the seller may require the buyer to arrange all installation and repairs. Ask whether the quoted price includes freight, import duties, local delivery, installation and return shipping if the system fails acceptance testing.
International buyers should require clear serial-number documentation and a pre-shipment video or inspection. Anton Robots can help compare the landed legacy cost with a supported current alternative. Heavy or older industrial equipment should be packed and lifted by companies familiar with robots. Incorrect lifting can damage castings, brakes, encoders or cables before the system reaches the site. The buyer should photograph the robot before shipment and define responsibility for transit damage and insurance claims.
A used FANUC M-20iA should normally be assumed to have no current new-product manufacturer warranty unless the seller provides written evidence. Ask what the reseller warranty covers, its duration, response process, labour, parts, travel and freight exclusions.
Check controller and teach-pendant support, motor and gearbox availability, battery replacement, cables, software backups and access to trained technicians. For production use, establish a spare-parts and recovery plan before installation. A short warranty is only meaningful if the seller can diagnose and repair the robot.
Compare the support route with FANUC M-20iB/25, M-20iD/25, M-20iD/12L or another current medium-payload robot sized to the exact process, especially when downtime is expensive or the project must run for many years. Support should be checked before the purchase, not after a failure. Ask a local service company to confirm that it can work on the exact arm and controller and identify critical parts with long lead times. A spare pendant, batteries, cables or servo components may be justified for production-critical use.
The FANUC M-20iA is worth considering only when you need compatibility with an existing cell, can verify the complete system and have a credible service route. It can be attractive for extending a proven cell or replacing a failed compatible arm, but new lines should compare current energy, safety, service and programming benefits. It is usually a weaker choice for a new long-life automation project where modern safety, energy efficiency, software support and spare-parts availability are priorities.
The buying decision should be based on total ownership cost, not the auction price. Include inspection, refurbishment, transport, integration, safety upgrades, commissioning and downtime risk. Compare the legacy system with FANUC M-20iB/25, M-20iD/25, M-20iD/12L or another current medium-payload robot sized to the exact process using the same application assumptions.
Anton Robots can help review whether retaining compatibility or moving to a current platform creates the better business case. For production use, include a contingency for unavailable parts, controller failure and the possibility that the system cannot pass the required acceptance test.
Yes. FANUC M-20iA is a legacy FANUC model or generation rather than a standard current-production robot. FANUC lists M-20iA models as legacy products no longer in production; current projects use later M-20iB and M-20iD families.
Existing units may remain productive and specialist suppliers may provide parts, repairs or refurbishment, but a used listing is not equivalent to ordering a current robot with a new controller and full factory warranty. The exact status and support depend on the controller, build year and regional service network. For new projects, compare FANUC M-20iB/25, M-20iD/25, M-20iD/12L or another current medium-payload robot sized to the exact process.
For an installed line, ask whether a rebuild, controller strategy or complete replacement gives the lowest downtime and lifecycle risk. Discontinued does not mean unusable, but it changes the purchasing process. The buyer must rely more heavily on inspection, refurbishment quality, independent support and available spares. Anton Robots should position the model as a legacy sourcing option and explain the current replacement route rather than implying new factory availability.
The FANUC M-20iA family includes multiple legacy configurations. Examples include the M-20iA/12L at 12 kg and approximately 2,009 mm reach, the M-20iA/20M at 20 kg and 1,813 mm, and the high-inertia M-20iA/35M at 35 kg and 1,813 mm.
These are not interchangeable specifications. The suffix changes wrist capacity, reach, mounting and process suitability. Confirm the exact nameplate, manual and payload diagram. The payload must include tooling and the workpiece, and wrist moment or inertia can restrict the usable load before the nominal mass limit is reached. Always use the exact suffix and mechanical-unit specification when modelling payload or reach.
A family-level figure is useful for orientation only. Final selection should be checked with the real tool, centre of gravity, wrist inertia, required poses and any mounting restrictions. The final decision should be documented with the exact serialised equipment, inspection result, integration scope, acceptance criteria and named party responsible for after-sales support.
The FANUC M-20iA family was used for machine tending, medium-payload handling, part transfer, dispensing, seam sealing, assembly, finishing, deburring, packaging and inspection. The long-reach version served large machines and multi-station cells, while high-inertia versions supported substantial grippers.
Historical use does not guarantee that a used robot is suitable now. Verify the exact variant, path requirements, environment and controller options, then test with the intended tool. For new projects, compare current M-20iB and M-20iD models on cycle time, reach, support and integration cost. The application must also be reviewed against current production requirements.
Faster cycle targets, new parts, changed tooling or updated quality standards may make the original robot inadequate even if it performed the task successfully years ago. A representative trial is preferable to relying on an old installation reference. For production use, include a contingency for unavailable parts, controller failure and the possibility that the system cannot pass the required acceptance test.
FANUC M-20iA systems may use different R-30iA or R-30iB-era controllers depending on the build and retrofit history. The controller, servo hardware, pendant, safety hardware and software must match the mechanical unit. Confirm the full system backup, option licences, I/O, fieldbus, vision, force sensing and process software.
A used arm without the original controller information can be difficult to restore. Ask the seller to demonstrate automatic operation, all axes, mastering, alarm history and communication with peripheral equipment. Local support for the exact controller generation should be verified. Controller age can be as important as mechanical condition.
Software options, safety architecture, network protocols and backup media may be obsolete or locked to the original system. Confirm that the buyer receives usable backups, passwords, licences and documentation needed to restore the cell after a hardware failure. Anton Robots can help compare the used FANUC M-20iA system against a supported current alternative using the same payload, cycle, delivery and service assumptions.
FANUC M-20iA is an industrial robot and is not designed as an unrestricted collaborative cobot. Payloads up to 35 kg, high speed and large tools create impact, crushing, trapping and process hazards.
The cell requires a task-specific risk assessment and typically uses fencing, interlocked gates, scanners, safe zones, emergency stops and controlled restart. Machine tending adds hazards from the machine itself, while dispensing or finishing can introduce pressure, chemicals, sharp tools, dust or sparks. A legacy cell should be reviewed against current safety requirements before recommissioning. The integrator should document the required performance level, stopping system, access points and restart behaviour for the complete cell.
Reusing an old robot does not justify reusing an old safety concept without review. Safety upgrades should be included in the project budget and acceptance test. The final decision should be documented with the exact serialised equipment, inspection result, integration scope, acceptance criteria and named party responsible for after-sales support.
Inspect the exact suffix, serial number, controller, pendant, cables, internal dress routing, wrist, gearboxes, motors and mounting surfaces of a used FANUC M-20iA. Request operating hours, collision history, maintenance, grease and battery records, alarm logs and software backups.
Check for leaks, noise, backlash, damaged harnesses and contamination from coolant, sealant or finishing processes. Run a full motion and repeatability test with a realistic tool load. Confirm that the controller options and process interfaces needed for the application are included.
Also budget for transport, rigging, foundation checks and safety upgrades. A professional inspection should be recorded in writing, not only discussed by phone. Include photographs, measured backlash or repeatability, alarm history, replaced parts and test conditions. This record supports the buying decision and provides a baseline for maintenance after installation. For production use, include a contingency for unavailable parts, controller failure and the possibility that the system cannot pass the required acceptance test.
Current replacements include the FANUC M-20iB and M-20iD families. The correct model depends on whether the original was a 12L, 20M, 35M or another variant, and on the actual payload, reach, wrist inertia, mounting and environment.
A later robot may improve support, cable routing, energy use and controller integration, but can require new foundations, fixtures or program conversion. Ask an integrator to compare both envelopes and identify reusable tooling. For production-critical cells, a supported replacement may reduce lifecycle risk even when the initial price is higher. Replacement selection should consider not only headline payload and reach but also wrist moments, floor loading, controller interfaces, mounting, path accuracy and process options.
A newer robot that is slightly different mechanically may still be the lower-risk choice when support and expected service life are included. Anton Robots can help compare the used FANUC M-20iA system against a supported current alternative using the same payload, cycle, delivery and service assumptions.
A complete FANUC M-20iA sourcing quote should identify the exact variant, serial number, controller, pendant, cables, dress pack, software, operating hours and refurbishment. Include load and repeatability tests, maintenance completed, warranty, spare-parts route, crating, freight, rigging, installation and mastering.
The application scope should cover tooling, fixtures, safety, machine interfaces, programming, commissioning, training and acceptance testing. Ask for a comparison with a current M-20 model using the same payload, reach and cycle target. This shows whether the legacy saving survives the full cost of recommissioning.
The scope should end with a functional or production acceptance test that defines pass and fail criteria. Payment milestones can be linked to inspection, shipment, installation and acceptance. Clear responsibility for software, tooling, safety and site readiness helps prevent disputes between the equipment seller, integrator and buyer. The final decision should be documented with the exact serialised equipment, inspection result, integration scope, acceptance criteria and named party responsible for after-sales support.
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