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Epson GX4-B351 Review: Specs, Price and Applications of the 4 kg SCARA Robot

Oct 10
3 min read

Updated: 2 days ago

Epson GX4-B351 4-axis SCARA robot with 4 kg payload
The Epson GX4-B351.

The Epson GX4-B351 is a 4-axis SCARA robot with a maximum payload of 4 kg, an arm length of 350 mm and ±0.010 mm repeatability, listed from USD 11,500. This review covers its full specifications, design, programming options, applications and price, so you can decide whether it fits your automation project.

Quick Verdict

The Epson GX4-B351 is a 4-axis SCARA robot with a 4 kg maximum payload, 350 mm arm length and ±0.010 mm repeatability. It is designed for assembly, pick-and-place and intricate small-parts handling. The arm weighs 16 kg (ceiling and wall version 17 kg), mounts on a tabletop, ceiling or wall and runs on the Epson RC700-E controller. Its standard cycle time is 0.35 s. It is listed from USD 11,500.


Epson GX4-B351 at a Glance

  • Maximum payload: 4 kg

  • Arm length: 350 mm

  • Axes: 4

  • Repeatability: ±0.010 mm

  • Speed: 0.35 s standard cycle time

  • Weight: 16 kg (ceiling and wall version 17 kg)

  • Controller: Epson RC700-E

  • Price: from USD 11,500


Epson GX4-B351 Technical Specifications

The table below lists the published specifications of the Epson GX4-B351.

Specification

Epson GX4-B351

Manufacturer

Epson Robots

Model

GX4-B351

Robot type

4-axis SCARA robot

Maximum payload

4 kg

Arm length

350 mm

Axes

4

Repeatability

±0.010 mm

Speed

0.35 s standard cycle time

Controller

Epson RC700-E

Interfaces

Ethernet, USB, RS-232C, standard I/O: 24 inputs / 16 outputs, fieldbus slave: PROFINET, PROFIBUS-DP, DeviceNet, CC-Link, EtherNet/IP, EtherCAT, fieldbus master: PROFIBUS-DP, DeviceNet, EtherNet/IP

Certifications

CE, TUV certified: ISO 10218-1, UL 1740, CSA Z434, ISO 13849, Category 3, PL d, RoHS

Starting price

From USD 11,500


Detailed Technical Data

  • 4 axes

  • Max. payload 4 kg

  • Arm length 350 mm

  • Repeatability ±0.010 mm

  • Weight 16 kg (ceiling and wall version 17 kg)

  • Mounting tabletop, ceiling, wall

  • Standard cycle time 0.35 s

  • Controller RC700-E


Design and Build Quality

Epson GX4-B351 robot
The Epson GX4-B351.

The GX-Series is Epson's newer high-performance SCARA line and runs on the RC700-E controller. Published build data for the GX4-B351: weight 16 kg (ceiling and wall version 17 kg); mounting tabletop, ceiling, wall.


Programming and Software

Epson RC+ and SPEL+

The GX4-B351 runs on the Epson RC700-E controller and is programmed in the Epson RC+ development environment using the SPEL+ language.

Industrial Communication

Published interfaces are Ethernet, USB, RS-232C, standard I/O: 24 inputs / 16 outputs, fieldbus slave: PROFINET, PROFIBUS-DP, DeviceNet, CC-Link, EtherNet/IP, EtherCAT and fieldbus master: PROFIBUS-DP, DeviceNet, EtherNet/IP.


Epson GX4-B351 Applications and Use Cases

Typical applications for the GX4-B351 are small parts assembly, electronics handling, medical device assembly, testing, packaging and dispensing.

Small-Parts Assembly

Epson GX4-B351 robot arm
The Epson GX4-B351.

The SCARA layout moves quickly point to point, and ±0.010 mm repeatability suits inserting and fitting small components.

Pick and Place and Kitting

A 4 kg maximum payload and a 350 mm arm length cover transfer between trays, feeders and conveyors.

Dispensing and Testing

The GX4-B351 follows dispensing paths and loads test fixtures in electronics and medical device production.


Epson GX4-B351 Price and Value

The Epson GX4-B351 is listed from USD 11,500 on All Things Cobots. The controller, end effectors, safety equipment and integration affect the final price and are quoted separately. Prices are indicative, are not final and may change.


Pros and Cons

Pros

  • 4 kg maximum payload with a 350 mm arm length

  • ±0.010 mm repeatability

  • 0.35 s standard cycle time

  • Tabletop, ceiling, wall mounting

  • Runs on the current RC700-E controller

Cons

  • Four axes: parts cannot be tilted

  • The 4 kg maximum payload includes the end effector

  • End effectors, safety equipment and integration are quoted separately


Who Should Buy the Epson GX4-B351?

The Epson GX4-B351 fits electronics, medical device and consumer goods manufacturers that need fast, precise point-to-point motion.



See the full Epson GX4-B351 product listing on All Things Cobots.



Epson GX4-B351 FAQ

How much does the Epson GX4-B351 cost?

The Epson GX4-B351 is listed from USD 11,500 on All Things Cobots. The price is indicative and may change, and it does not include end effectors, safety equipment or integration.

What is the payload and arm length of the Epson GX4-B351?

The GX4-B351 has a maximum payload of 4 kg and an arm length of 350 mm.

How accurate is the Epson GX4-B351?

Its published repeatability is ±0.010 mm.

How many axes does the Epson GX4-B351 have?

The GX4-B351 has 4 axes.

How is the Epson GX4-B351 programmed?

It is programmed in the Epson RC+ development environment using the SPEL+ language.

Which controller does the Epson GX4-B351 use?

It runs on the Epson RC700-E controller.

How much does the Epson GX4-B351 weigh?

Published weight 16 kg (ceiling and wall version 17 kg).

How can the Epson GX4-B351 be mounted?

Published mounting options: tabletop, ceiling, wall.

What is the Epson GX4-B351 used for?

Typical applications are small parts assembly, electronics handling, medical device assembly, testing, packaging and dispensing.


Specifications and prices are based on manufacturer and distributor information. Prices are indicative, are not final and may change.

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