KR 120 R3900-2 K vs MOTOMAN-GP4

Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and MOTOMAN-GP4 (Yaskawa) — specs, pricing, Robo Index, and verified deployments. Updated daily.

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Optimized for Agriculture buyers. Priority specs lifted to the top and marked with a target.

KR 120 R3900-2 KAAA

MOTOMAN-GP4A

Layer 1: Identity & Trust

Manufacturer Country

KR 120 R3900-2 KGermany
MOTOMAN-GP4Japan

Year First Available

KR 120 R3900-2 K2015
MOTOMAN-GP4—

Verified Deployments

KR 120 R3900-2 K0 Deployments
MOTOMAN-GP40 Deployments

Layer 2: Operational

Price

KR 120 R3900-2 K$19,000–$84,900 USD
MOTOMAN-GP4Contact for quote

Availability Status

KR 120 R3900-2 KACTIVE
MOTOMAN-GP4ACTIVE

Arm Mechanics

IP Rating (Arm)

KR 120 R3900-2 KIP65
MOTOMAN-GP4—

Payload

KR 120 R3900-2 K146 kg
MOTOMAN-GP4—

Reach

KR 120 R3900-2 K3,904 mm
MOTOMAN-GP4—

Degrees of Freedom

KR 120 R3900-2 K6
MOTOMAN-GP46

Repeatability

KR 120 R3900-2 K±0.04 mm
MOTOMAN-GP4±0.01 mm

Robot Weight

KR 120 R3900-2 K42 kg
MOTOMAN-GP4—

IP Rating (Wrist)

KR 120 R3900-2 KIP67
MOTOMAN-GP4—

Performance

MTBF

KR 120 R3900-2 K—
MOTOMAN-GP428 hrs

Controller & Programming

Controller Model

KR 120 R3900-2 KKR C5, KR C5 micro
MOTOMAN-GP4YRC1000 / YRC1000micro

Commercial

Price (USD)

KR 120 R3900-2 K$19,000–$84,900 USD
MOTOMAN-GP4Contact for quote

Warranty

KR 120 R3900-2 K2 yrs
MOTOMAN-GP41 yrs

Service Network

KR 120 R3900-2 Kglobal
MOTOMAN-GP4—

	KR 120 R3900-2 Kindustrial-armKUKA Robotics AAARobo Index	MOTOMAN-GP4industrial-armYaskawa ARobo Index
Layer 1: Identity & Trust
Manufacturer Country (values differ)	Germany	Japan
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
IP Rating (Arm) (priority for Agriculture buyers) (values differ)	IP65	—
Payload (priority for Agriculture buyers) (values differ)	146 kg	—
Reach (values differ)	3,904 mm	—
Degrees of Freedom	6	6
Repeatability (values differ)	±0.04 mm	±0.01 mm
Robot Weight (values differ)	42 kg	—
IP Rating (Wrist) (values differ)	IP67	—
Performance
MTBF (values differ)	—	28 hrs
Controller & Programming
Controller Model (values differ)	KR C5, KR C5 micro	YRC1000 / YRC1000micro
Commercial
Price (USD) (values differ)	$19,000–$84,900 USD	Contact for quote
Warranty (values differ)	2 yrs	1 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), 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	MOTOMAN-GP4
Investment	$51,950	No price
Payback period	12.5 mo	—
Net savings (5 yr)	$198,050	—
ROI (5 yr)	+381%	—

MOTOMAN-GP4 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 MOTOMAN-GP4?

KR 120 R3900-2 K is made by KUKA Robotics, based in DE. MOTOMAN-GP4 is made by Yaskawa, based in JP.

How do KR 120 R3900-2 K and MOTOMAN-GP4 compare on the Robo Index?

KR 120 R3900-2 K grades AAA on the Robo Index. MOTOMAN-GP4 grades A. 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 MOTOMAN-GP4?

KR 120 R3900-2 K has a reach of 3904 mm. MOTOMAN-GP4 has a reach of 550 mm.

Are KR 120 R3900-2 K and MOTOMAN-GP4 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 MOTOMAN-GP4?

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 MOTOMAN-GP4 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.