KR 120 R3900-2 K vs Mobile Intelligent Vision Welding / Cutting Robot

Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and Mobile Intelligent Vision Welding / Cutting Robot (EVST) — specs, pricing, Robo Score, 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 K78.0

Mobile Intelligent Vision Welding / Cutting…40.1

Layer 1: Identity & Trust

Manufacturer Country

KR 120 R3900-2 KGermany
Mobile Intelligent Vision Welding / Cutting…—

Year First Available

KR 120 R3900-2 K2015
Mobile Intelligent Vision Welding / Cutting…—

Verified Deployments

KR 120 R3900-2 K0 Deployments
Mobile Intelligent Vision Welding / Cutting…0 Deployments

Layer 2: Operational

Price

KR 120 R3900-2 K$19,000–$84,900 USD
Mobile Intelligent Vision Welding / Cutting…Contact for quote

Availability Status

KR 120 R3900-2 KACTIVE
Mobile Intelligent Vision Welding / Cutting…ACTIVE

Arm Mechanics

Robot Weight

KR 120 R3900-2 K42 kg
Mobile Intelligent Vision Welding / Cutting…—

Payload

KR 120 R3900-2 K146 kg
Mobile Intelligent Vision Welding / Cutting…—

Reach

KR 120 R3900-2 K3,904 mm
Mobile Intelligent Vision Welding / Cutting…—

Degrees of Freedom

KR 120 R3900-2 K6
Mobile Intelligent Vision Welding / Cutting…—

Repeatability

KR 120 R3900-2 K±0.04 mm
Mobile Intelligent Vision Welding / Cutting…—

IP Rating (Arm)

KR 120 R3900-2 KIP65
Mobile Intelligent Vision Welding / Cutting…—

IP Rating (Wrist)

KR 120 R3900-2 KIP67
Mobile Intelligent Vision Welding / Cutting…—

Controller & Programming

Controller Model

KR 120 R3900-2 KKR C5, KR C5 micro
Mobile Intelligent Vision Welding / Cutting…—

Commercial

Price (USD)

KR 120 R3900-2 K$19,000–$84,900 USD
Mobile Intelligent Vision Welding / Cutting…Contact for quote

Warranty

KR 120 R3900-2 K2 yrs
Mobile Intelligent Vision Welding / Cutting…—

Service Network

KR 120 R3900-2 Kglobal
Mobile Intelligent Vision Welding / Cutting…global

	KR 120 R3900-2 Kindustrial-armKUKA Robotics 78.0Robo Score	Mobile Intelligent Vision Welding / Cutting…industrial-armEVST 40.1Robo Score
Layer 1: Identity & Trust
Manufacturer Country (values differ)	Germany	—
Year First Available (values differ)	2015	—
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	—
Reach (values differ)	3,904 mm	—
Degrees of Freedom (values differ)	6	—
Repeatability (values differ)	±0.04 mm	—
IP Rating (Arm) (values differ)	IP65	—
IP Rating (Wrist) (values differ)	IP67	—
Controller & Programming
Controller Model (values differ)	KR C5, KR C5 micro	—
Commercial
Price (USD) (values differ)	$19,000–$84,900 USD	Contact for quote
Warranty (values differ)	2 yrs	—
Service Network	global	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	Mobile Intelligent Vision Welding / Cutting…
Investment	$51,950	No price
Payback period	12.5 mo	—
Net savings (5 yr)	$198,050	—
ROI (5 yr)	+381%	—

Mobile Intelligent Vision Welding / Cutting… 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 Mobile Intelligent Vision Welding / Cutting Robot?

KR 120 R3900-2 K is made by KUKA Robotics, based in DE. Mobile Intelligent Vision Welding / Cutting Robot is made by EVST.

How do KR 120 R3900-2 K and Mobile Intelligent Vision Welding / Cutting Robot compare on the Robo Score?

KR 120 R3900-2 K scores 78.0 on the Robo Score. Mobile Intelligent Vision Welding / Cutting Robot scores 40.1. The Robo Score is a 0–100 credibility figure blending commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.

Are KR 120 R3900-2 K and Mobile Intelligent Vision Welding / Cutting Robot 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 Mobile Intelligent Vision Welding / Cutting Robot?

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 Mobile Intelligent Vision Welding / Cutting Robot 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 Score is calculated.