A0509s vs RB5-850E

Side-by-side comparison of A0509s (Doosan Robotics Inc.) and RB5-850E (Rainbow Robotics Co., Ltd.) — 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.

A0509sAA

RB5-850EAA

Layer 1: Identity & Trust

Manufacturer Country

A0509sSouth Korea
RB5-850ESouth Korea

Year First Available

A0509s2015
RB5-850E2011

Verified Deployments

A0509s0 Deployments
RB5-850E0 Deployments

Layer 2: Operational

Price

A0509s$22,500–$25,700 USD
RB5-850E$22,000 USD

Availability Status

A0509sACTIVE
RB5-850EACTIVE

Arm Mechanics

Reach

A0509s900 mm
RB5-850E927.7 mm

Repeatability

A0509s±0.03 mm
RB5-850E±0.05 mm

Payload

A0509s5 kg
RB5-850E5 kg

IP Rating

A0509sIP54
RB5-850EIP66

Degrees of Freedom

A0509s6
RB5-850E6

Max TCP Speed

A0509s1 m/s
RB5-850E—

Robot Weight

A0509s21 kg
RB5-850E22 kg

Mounting Options

A0509sfloor, ceiling, wall
RB5-850E—

Safety

Safety Rating

A0509sA+ Sécurité
RB5-850EISO 10218-1, ISO/TS 15066

Force/Torque Sensing

A0509snone
RB5-850Enone

Ease of Use

Setup Time

A0509s1 hrs
RB5-850E1 hrs

Programming Interface

A0509sDART platform
RB5-850Eno_code_gui

End-Effector

Tool Flange Standard

A0509s—
RB5-850EM10 12-pin

Software & Connectivity

ROS Compatible

A0509sYes
RB5-850E—

Fieldbus Protocols

A0509sEtherCAT, Profinet
RB5-850E—

Commercial

Price (USD)

A0509s$22,500–$25,700 USD
RB5-850E$22,000 USD

Warranty

A0509s2 yrs
RB5-850E—

Lead Time

A0509s4 wks
RB5-850E—

	A0509scobotDoosan Robotics Inc. AARobo Index	RB5-850EcobotRainbow Robotics Co., Ltd. AARobo Index
Layer 1: Identity & Trust
Manufacturer Country	South Korea	South Korea
Year First Available (values differ)	2015	2011
Verified Deployments	0 Deployments	0 Deployments
Layer 2: Operational
Price (values differ)	$22,500–$25,700 USD	$22,000 USD
Availability Status	ACTIVE	ACTIVE
Layer 3: Category Specific
Arm Mechanics
Reach (priority for Manufacturing buyers) (values differ)	900 mm	927.7 mm
Repeatability (priority for Manufacturing buyers) (values differ)	±0.03 mm	±0.05 mm
Payload (priority for Manufacturing buyers)	5 kg	5 kg
IP Rating (priority for Manufacturing buyers) (values differ)	IP54	IP66
Degrees of Freedom	6	6
Max TCP Speed (values differ)	1 m/s	—
Robot Weight (values differ)	21 kg	22 kg
Mounting Options (values differ)	floor, ceiling, wall	—
Safety
Safety Rating (values differ)	A+ Sécurité	ISO 10218-1, ISO/TS 15066
Force/Torque Sensing	none	none
Ease of Use
Setup Time	1 hrs	1 hrs
Programming Interface (values differ)	DART platform	no_code_gui
End-Effector
Tool Flange Standard (values differ)	—	M10 12-pin
Software & Connectivity
ROS Compatible (values differ)	Yes	—
Fieldbus Protocols (values differ)	EtherCAT, Profinet	—
Commercial
Price (USD) (values differ)	$22,500–$25,700 USD	$22,000 USD
Warranty (values differ)	2 yrs	—
Lead Time (values differ)	4 wks	—

Insufficient data for full comparison

The following fields had no data for any of the selected robots: Battery / Shift Runtime, TCP Speed (Collaborative), Power/Force Limiting, Safety I/O Pairs, Duty Cycle, Time to Redeploy, No-Code Capable, Offline Programming, Tool Changer Support, Integrated F/T Sensor, Wrist Power Supply, SDK Languages, Digital Twin Support, MTBF, Path Accuracy, CaaS / Month

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	A0509s	RB5-850E
Investment	$24,100	$22,000
Payback period	5.8 mo	5.3 mo
Net savings (5 yr)	$225,900	$228,000
ROI (5 yr)	+937%	+1036%

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 A0509s and RB5-850E?

A0509s is made by Doosan Robotics Inc., based in KR. RB5-850E is made by Rainbow Robotics Co., Ltd., based in KR.

When were A0509s and RB5-850E launched?

A0509s launched in 2015. RB5-850E launched in 2011.

How do A0509s and RB5-850E compare on the Robo Index?

A0509s grades AA on the Robo Index. RB5-850E 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 A0509s compare to RB5-850E?

A0509s has a reach of 900 mm. RB5-850E has a reach of 850 mm.

Are A0509s and RB5-850E in the same category?

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

What is the realistic total cost of ownership for Cobot robots?

Hardware cost is one input. Cobot TCO also includes integration, training, downtime, and end-of-life. Our breakdown: Cobot TCO and Payback Math: Hardware, EOAT, and Zero-Fencing Savings.

What should a buyer ask vendors when choosing between A0509s and RB5-850E?

Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Cobot Vendor Red Flags: Questions That Filter Out the Marketing.

Going deeper — picking the right robot

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About this comparison

A0509s vs RB5-850E compares two robots in the cobot 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.