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Estun

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Articulated arm 🇨🇳China ✓ Verified specs

Estun

ER4-550-MI

Ultra-compact 4 kg mini articulated robot with 550 mm reach and IP65 rating, designed for precision assembly and electronics tasks in tight spaces.

Partial · 30%

Payload

4 kg

Reach

550 mm

Repeatability

💲 Price on application

Full specifications

Performance

How much it lifts, how far it reaches, how precisely it repeats.

Payload

Maximum mass the robot can carry at the wrist flange, including the gripper/tool. Higher means it can handle heavier parts.

4 kg
6th pct in class
Reach

Maximum horizontal distance from the base axis to the wrist — defines the size of the work area. Higher means a larger envelope.

550 mm
7th pct in class
Axes (DOF)

Number of independently driven joints / degrees of freedom. 6 is standard for articulated arms; 4 for SCARA/palletizers; 7 adds elbow redundancy.

6

Physical

Size, mass and how it mounts.

Robot weight

Mass of the manipulator (arm) without controller. Lighter eases mounting and mobile use; heavier often means stiffer/higher payload.

22 kg
Mounting

Orientations the robot can be installed in (floor, ceiling/inverted, wall, tilted, mobile base).

floor

Environment

Conditions it can operate in — dust, water, temperature, cleanliness.

IP rating (arm)

Ingress protection of the body against dust/water (IEC 60529). First digit = dust, second = water. Higher resists harsher environments.

IP65
47th pct in class

Safety

Standards met and collaborative-operation capability.

Collaborative

Whether the robot is designed to work safely next to people without fencing (power-and-force-limited).

No
Safety standards

Certified safety standards (ISO 10218-1, ISO/TS 15066) and functional-safety level (PLd/PLe, SIL2/3).

ISO 10218-1

Control & software

Programming, languages and ecosystem.

Programming

How the robot is taught: pendant, hand-guiding (lead-through), block/flow-chart, scripting, offline simulation.

teach-pendant, offline-sim
ROS support

Robot Operating System driver availability (none / ROS 1 / ROS 2 / both).

none

Specifications sourced from Estun official datasheet ↗. Specs last verified 2026-06-26.

Frequently asked questions

What is the payload of the Estun ER4-550-MI? +

The Estun ER4-550-MI has a maximum payload of 4 kg.

What is the reach of the Estun ER4-550-MI? +

The Estun ER4-550-MI has a maximum reach of 550 mm (0.55 m).

How many axes does the Estun ER4-550-MI have? +

The Estun ER4-550-MI is a 6-axis articulated arm robot.

What is the Estun ER4-550-MI used for? +

The Estun ER4-550-MI is typically used for assembly, dispensing, inspection.

What is the IP rating of the Estun ER4-550-MI? +

The Estun ER4-550-MI arm carries an IP65 ingress-protection rating.

How much does the Estun ER4-550-MI cost? +

Estun ER4-550-MI: Price on application. Industrial robots are typically quoted per project through authorized distributors.

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