Used EPSON RS4-551S 4-Axis SCARA Industrial Robot for Sale
The EPSON RS4-551S is a high-performance 4-axis SCARA industrial robot designed for high-speed and precision automation. With a 550mm arm length and up to 4kg maximum payload, it provides a large and efficient working envelope while maintaining a compact installation footprint.
One of the key advantages of the RS4-551S is its innovative workspace design. The robot's second joint can move underneath the first joint, allowing the robot to utilize the central area of its working envelope more effectively than conventional SCARA designs. This can reduce unnecessary travel distances and improve overall production throughput.
The RS4-551S provides ±0.015mm repeatability on Joints 1 and 2, ±0.01mm on the Z axis and ±0.01° on the fourth axis. Its standard cycle time is approximately 0.39 seconds, making it suitable for demanding high-throughput production environments.
The robot uses a ceiling-mounted configuration, creating a zero-footprint installation area underneath the arm. This design can help maximize available workspace and is particularly useful for compact automated production cells.
The RS4-551S is available in standard, cleanroom and ESD configurations depending on the specific robot version. Epson documentation also lists compatibility with RC700A, RC180 and RC620 controllers depending on generation/configuration.
FANCHENG supplies used and refurbished EPSON RS4-551S SCARA robots for manufacturers, automation integrators and industrial users worldwide.
Key Features
- 4-axis SCARA industrial robot
- 1kg rated payload
- 4kg maximum payload
- 550mm arm length
- ±0.015mm J1/J2 repeatability
- ±0.01mm Z-axis repeatability
- ±0.01° J4 repeatability
- 0.39-second standard cycle time
- High-speed operation
- Innovative workspace design
- Ceiling-mounted configuration
- Compact and efficient installation
- Standard, cleanroom and ESD configurations available
- Suitable for high-throughput automation
- Used and refurbished units available
Typical Applications
The EPSON RS4-551S can be used for:
- Pick and Place
- Assembly
- Material Handling
- Small Parts Handling
- Component Handling
- Packaging
- Sorting
- Inspection
- Electronics Assembly
- Part Transfer
- Loading and Unloading
- Precision Automation
- High-Speed Production
Epson specifically highlights the RS4 for applications across automotive, medical, semiconductor, pharmaceutical, food, consumer products, electronics and packaging industries.
Why Choose FANCHENG?
FANCHENG specializes in supplying used and refurbished industrial robots from major international brands including ABB, FANUC, KUKA, Kawasaki, YASKAWA MOTOMAN, Stäubli and EPSON.
We provide cost-effective automation equipment for manufacturers, system integrators and industrial users worldwide.
Our services include:
- Used and refurbished EPSON robots
- SCARA industrial robots
- High-speed automation robots
- Robots and controllers
- Multiple brands and models
- Robot inspection and testing
- Competitive prices
- Worldwide export support
- Fast quotation
- Professional sales assistance
- Support for automation integrators and end users
Get a Quote
Looking for a used EPSON RS4-551S SCARA robot for sale?
Send us your required model, quantity, application and destination country. FANCHENG can check current stock and provide a competitive quotation.





