KR 120 R3900-2 K vs M-1000/550F-46A

Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and M-1000/550F-46A (FANUC) — specs, pricing, Robo Index, and verified deployments. Updated daily.

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Optimized for Cleaning & Facilities buyers. Priority specs lifted to the top and marked with a target.

KR 120 R3900-2 KAAA

M-1000/550F-46AAA

Layer 1: Identity & Trust

Manufacturer Country

KR 120 R3900-2 KGermany
M-1000/550F-46AJapan

Year First Available

KR 120 R3900-2 K2015
M-1000/550F-46A2024

Verified Deployments

KR 120 R3900-2 K0 Deployments
M-1000/550F-46A0 Deployments

Layer 2: Operational

Price

KR 120 R3900-2 K$19,000–$84,900 USD
M-1000/550F-46AContact for quote

Availability Status

KR 120 R3900-2 KACTIVE
M-1000/550F-46AACTIVE

Arm Mechanics

Robot Weight

KR 120 R3900-2 K42 kg
M-1000/550F-46A—

Payload

KR 120 R3900-2 K146 kg
M-1000/550F-46A550 kg

Reach

KR 120 R3900-2 K3,904 mm
M-1000/550F-46A4,600 mm

Degrees of Freedom

KR 120 R3900-2 K6
M-1000/550F-46A6

Repeatability

KR 120 R3900-2 K±0.04 mm
M-1000/550F-46A—

IP Rating (Arm)

KR 120 R3900-2 KIP65
M-1000/550F-46AIP67

IP Rating (Wrist)

KR 120 R3900-2 KIP67
M-1000/550F-46A—

Controller & Programming

Controller Model

KR 120 R3900-2 KKR C5, KR C5 micro
M-1000/550F-46AFANUC R-50iA

Commercial

Price (USD)

KR 120 R3900-2 K$19,000–$84,900 USD
M-1000/550F-46AContact for quote

Warranty

KR 120 R3900-2 K2 yrs
M-1000/550F-46A—

Service Network

KR 120 R3900-2 Kglobal
M-1000/550F-46A—

	KR 120 R3900-2 Kindustrial-armKUKA Robotics AAARobo Index	M-1000/550F-46Aindustrial-armFANUC AARobo Index
Layer 1: Identity & Trust
Manufacturer Country (values differ)	Germany	Japan
Year First Available (values differ)	2015	2024
Verified Deployments	0 Deployments	0 Deployments
Layer 2: Operational
Price (values differ)	$19,000–$84,900 USD	Contact for quote
Availability Status	ACTIVE	ACTIVE
Layer 3: Category Specific
Arm Mechanics
Robot Weight (priority for Cleaning & Facilities buyers) (values differ)	42 kg	—
Payload (priority for Cleaning & Facilities buyers) (values differ)	146 kg	550 kg
Reach (values differ)	3,904 mm	4,600 mm
Degrees of Freedom	6	6
Repeatability (values differ)	±0.04 mm	—
IP Rating (Arm) (values differ)	IP65	IP67
IP Rating (Wrist) (values differ)	IP67	—
Controller & Programming
Controller Model (values differ)	KR C5, KR C5 micro	FANUC R-50iA
Commercial
Price (USD) (values differ)	$19,000–$84,900 USD	Contact for quote
Warranty (values differ)	2 yrs	—
Service Network (values differ)	global	—

Insufficient data for full comparison

The following fields had no data for any of the selected robots: Battery / Shift Runtime, Path Accuracy, Max TCP Speed, Cycle Time (25/305/25), MTBF, Duty Cycle, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Teach Pendant Type, Offline Programming, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Flange Standard, Tool Changer (ISO), Internal Cable Routing, Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life

best in categoryweakest in categoryvalues differ

ROI Comparison

Same operating assumptions across every robot — the only difference is price. Set your numbers once to see which pays back fastest.

Robots (fleet)

Hours / day

Labor $/hr (USD)

Days / year

Annual labor displaced (per robot): $50,000

Metric	KR 120 R3900-2 K	M-1000/550F-46A
Investment	$51,950	No price
Payback period	12.5 mo	—
Net savings (5 yr)	$198,050	—
ROI (5 yr)	+381%	—

M-1000/550F-46A has no listed price, so payback can't be computed. Contact the manufacturer for a quote.

Estimates labor-cost displacement only — not a full total cost of ownership. Actual ROI depends on integration, maintenance, training, downtime, and task fit. Converted currencies are indicative; USD is the price of record.

Trade-offs at a glance

Frequently asked

Who makes KR 120 R3900-2 K and M-1000/550F-46A?

KR 120 R3900-2 K is made by KUKA Robotics, based in DE. M-1000/550F-46A is made by FANUC, based in JP.

When were KR 120 R3900-2 K and M-1000/550F-46A launched?

KR 120 R3900-2 K launched in 2015. M-1000/550F-46A launched in 2024.

How do KR 120 R3900-2 K and M-1000/550F-46A compare on the Robo Index?

KR 120 R3900-2 K grades AAA on the Robo Index. M-1000/550F-46A grades AA. The Robo Index is a credibility grade (AAA … C) that blends commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.

How does the reach of KR 120 R3900-2 K compare to M-1000/550F-46A?

KR 120 R3900-2 K has a reach of 3904 mm. M-1000/550F-46A has a reach of 4600 mm.

Are KR 120 R3900-2 K and M-1000/550F-46A in the same category?

Both robots are classified as Industrial Arm on Robolist. Filters and ranking treat them as direct alternatives.

What is the realistic total cost of ownership for Industrial Arm robots?

Hardware cost is one input. Industrial Arm TCO also includes integration, training, downtime, and end-of-life. Our breakdown: TCO of a 6-Axis Arm Cell: Hardware, EOAT, Integration, Programming.

What should a buyer ask vendors when choosing between KR 120 R3900-2 K and M-1000/550F-46A?

Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Industrial Arm Vendor Selection: Capability Matrices and Proof Points.

Going deeper — picking the right robot

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About this comparison

KR 120 R3900-2 K vs M-1000/550F-46A compares two robots in the industrial-arm category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robo Index is calculated.