Epson C4 Review: Specs, Price and Applications of the 4 kg 6-Axis Robot
Updated: 2 days ago

The Epson C4 is a 6-axis articulated robot with a maximum payload of 4 kg, a reach of 600 mm and ±0.020 mm repeatability, listed from USD 16,000. 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 C4 is a 6-axis articulated robot with a 4 kg maximum payload, 600 mm reach and ±0.020 mm repeatability. It is a compact arm for high-speed tasks in a small footprint, used in lab automation, medical, electronics and automotive production. The arm weighs 27 kg, mounts on a tabletop or ceiling and runs on the Epson RC700-A controller. Its standard cycle time is 0.37 s. It is listed from USD 16,000.
Epson C4 at a Glance
Maximum payload: 4 kg
Reach: 600 mm
Axes: 6
Repeatability: ±0.020 mm
Speed: 0.37 s standard cycle time
Weight: 27 kg
Controller: Epson RC700-A
Price: from USD 16,000
Epson C4 Technical Specifications
The table below lists the published specifications of the Epson C4.
Specification | Epson C4 |
Manufacturer | Epson Robots |
Model | C4 |
Robot type | 6-axis articulated robot |
Maximum payload | 4 kg |
Reach | 600 mm |
Axes | 6 |
Repeatability | ±0.020 mm |
Speed | 0.37 s standard cycle time |
Controller | Epson RC700-A |
Interfaces | Ethernet (10/100Base-T), USB, RS-232C, standard I/O: 24 inputs / 16 outputs, fieldbus slave: DeviceNet, PROFINET, PROFIBUS-DP, CC-Link, EtherNet/IP, EtherCAT, fieldbus master: DeviceNet, PROFIBUS-DP, EtherNet/IP |
Certifications | CE, ANSI/RIA R15.06-1999, EN ISO 10218-1, EN ISO 13849-1, EN 60204-1, KC, RoHS |
Starting price | From USD 16,000 |
Detailed Technical Data
6 axes
Max. payload 4 kg
Reach 600 mm
Repeatability ±0.020 mm
Weight 27 kg
Mounting tabletop, ceiling
Standard cycle time 0.37 s
Controller RC700-A
Design and Build Quality

The C-Series is Epson's line of compact 6-axis arms for high-speed work. Published build data for the C4: weight 27 kg; mounting tabletop, ceiling.
Programming and Software
Epson RC+ and SPEL+
The C4 runs on the Epson RC700-A controller and is programmed in the Epson RC+ development environment using the SPEL+ language.
Industrial Communication
Published interfaces are Ethernet (10/100Base-T), USB, RS-232C, standard I/O: 24 inputs / 16 outputs, fieldbus slave: DeviceNet, PROFINET, PROFIBUS-DP, CC-Link, EtherNet/IP, EtherCAT and fieldbus master: DeviceNet, PROFIBUS-DP, EtherNet/IP.
Epson C4 Applications and Use Cases
Typical applications for the C4 are small parts assembly, electronics handling, medical device assembly, testing, packaging and dispensing.
Assembly

The C4 assembles small and mid-size components with ±0.020 mm repeatability.
Machine Loading and Handling
A 4 kg maximum payload over a 600 mm reach covers loading, unloading and parts transfer in compact cells.
Testing, Packaging and Dispensing
Six axes let the arm reach parts from different angles for testing, packing and dispensing.
Epson C4 Price and Value
The Epson C4 is listed from USD 16,000 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 600 mm reach
±0.020 mm repeatability
0.37 s standard cycle time
Tabletop, ceiling mounting
Compact 6-axis design
Cons
The 4 kg maximum payload includes the end effector
End effectors, safety equipment and integration are quoted separately
Who Should Buy the Epson C4?
The Epson C4 fits manufacturers that need a compact, fast 6-axis arm for assembly and handling.
See the full Epson C4 product listing on All Things Cobots.
Epson C4 FAQ
How much does the Epson C4 cost?
The Epson C4 is listed from USD 16,000 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 reach of the Epson C4?
The C4 has a maximum payload of 4 kg and a reach of 600 mm.
How accurate is the Epson C4?
Its published repeatability is ±0.020 mm.
How many axes does the Epson C4 have?
The C4 has 6 axes.
How is the Epson C4 programmed?
It is programmed in the Epson RC+ development environment using the SPEL+ language.
Which controller does the Epson C4 use?
It runs on the Epson RC700-A controller.
How much does the Epson C4 weigh?
Published weight 27 kg.
How can the Epson C4 be mounted?
Published mounting options: tabletop, ceiling.
What is the Epson C4 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.





