KR 120 R3900-2 K vs Turn-Assist

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

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

KR 120 R3900-2 KAAA

Turn-AssistBB

Layer 1: Identity & Trust

Manufacturer Country

KR 120 R3900-2 KGermany
Turn-AssistBelgium

Year First Available

KR 120 R3900-2 K2015
Turn-Assist2010

Verified Deployments

KR 120 R3900-2 K0 Deployments
Turn-Assist0 Deployments

Layer 2: Operational

Price

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

Availability Status

KR 120 R3900-2 KACTIVE
Turn-AssistACTIVE

Arm Mechanics

Reach

KR 120 R3900-2 K3,904 mm
Turn-Assist—

Repeatability

KR 120 R3900-2 K±0.04 mm
Turn-Assist—

Payload

KR 120 R3900-2 K146 kg
Turn-Assist—

IP Rating (Arm)

KR 120 R3900-2 KIP65
Turn-Assist—

Degrees of Freedom

KR 120 R3900-2 K6
Turn-Assist—

Robot Weight

KR 120 R3900-2 K42 kg
Turn-Assist—

IP Rating (Wrist)

KR 120 R3900-2 KIP67
Turn-Assist—

Controller & Programming

Controller Model

KR 120 R3900-2 KKR C5, KR C5 micro
Turn-Assist—

Teach Pendant Type

KR 120 R3900-2 K—
Turn-Assistwireless tablet

Connectivity

ROS-Industrial Support

KR 120 R3900-2 K—
Turn-Assistnone

Commercial

Price (USD)

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

Warranty

KR 120 R3900-2 K2 yrs
Turn-Assist—

Service Network

KR 120 R3900-2 Kglobal
Turn-Assistregional

	KR 120 R3900-2 Kindustrial-armKUKA Robotics AAARobo Index	Turn-Assistindustrial-armRoboJob BBRobo Index
Layer 1: Identity & Trust
Manufacturer Country (values differ)	Germany	Belgium
Year First Available (values differ)	2015	2010
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
Reach (priority for Manufacturing buyers) (values differ)	3,904 mm	—
Repeatability (priority for Manufacturing buyers) (values differ)	±0.04 mm	—
Payload (priority for Manufacturing buyers) (values differ)	146 kg	—
IP Rating (Arm) (priority for Manufacturing buyers) (values differ)	IP65	—
Degrees of Freedom (values differ)	6	—
Robot Weight (values differ)	42 kg	—
IP Rating (Wrist) (values differ)	IP67	—
Controller & Programming
Controller Model (values differ)	KR C5, KR C5 micro	—
Teach Pendant Type (values differ)	—	wireless tablet
Connectivity
ROS-Industrial Support (values differ)	—	none
Commercial
Price (USD) (values differ)	$19,000–$84,900 USD	Contact for quote
Warranty (values differ)	2 yrs	—
Service Network (values differ)	global	regional

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, Offline Programming, Digital Twin Support, Communication Protocols, 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	Turn-Assist
Investment	$51,950	No price
Payback period	12.5 mo	—
Net savings (5 yr)	$198,050	—
ROI (5 yr)	+381%	—

Turn-Assist 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 Turn-Assist?

KR 120 R3900-2 K is made by KUKA Robotics, based in DE. Turn-Assist is made by RoboJob, based in BE.

When were KR 120 R3900-2 K and Turn-Assist launched?

KR 120 R3900-2 K launched in 2015. Turn-Assist launched in 2010.

How do KR 120 R3900-2 K and Turn-Assist compare on the Robo Index?

KR 120 R3900-2 K grades AAA on the Robo Index. Turn-Assist grades BB. 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.

Are KR 120 R3900-2 K and Turn-Assist 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 Turn-Assist?

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 Turn-Assist 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.