Nachi Robotics SC300 — Specs & Review
Specifications
| Brand | Nachi Robotics |
|---|---|
| Model | SC300 |
| Year | 2016 |
| Category | Industrial Lite |
| Autonomy | semi-autonomous |
| Environment | indoor |
| Weight | 10.5 kg |
| Country of origin | JP |
Key features
- 3 kg payload
- 300 mm reach
- ±0.01 mm repeatability
- 4-axis SCARA architecture
- 0.29 s cycle time
- High-speed insertion rated
- FD controller platform
- Compact bench-top footprint
What is it?
The Nachi SC300 is a SCARA robot with 3 kg payload, 300 mm reach, and ±0.01 mm repeatability. Part of Nachi's SC-series SCARA range, the SC300 is designed for high-speed horizontal assembly, insertion, and dispensing tasks where SCARA kinematics outperform 6-axis articulated robots. The SC300's 4-axis SCARA configuration provides faster horizontal motion and higher vertical rigidity than an equivalent 6-axis arm at this payload class.
Who is it for?
- Electronics manufacturers running PCB component insertion, connector placement, and precision screwdriving
- Medical device assemblers requiring sub-0.01 mm precision in compact assembly cells
- Semiconductor equipment manufacturers needing high-speed wafer handling or substrate pick-and-place
- Consumer electronics producers running high-volume assembly of small electromechanical devices
Key specs
- Payload: 3 kg
- Reach: 300 mm
- Repeatability: ±0.01 mm
- Axes: 4 (SCARA)
- Weight (arm): 10.5 kg
- Controller: Nachi FD
- Cycle time: 0.29 s (standard SCARA test path)
- Z-stroke: 150 mm
How it compares
The Epson T3 (3 kg, 300 mm, ±0.01 mm) and Yamaha YK300X (4 kg, 300 mm) are direct competitors. The Epson T3 is arguably the market reference at this specification; the Nachi SC300 is preferred in Japanese automotive supply chains where Nachi service is the incumbent. All three achieve ±0.01 mm or better at this class.
Limitations
- SCARA architecture is limited to 4 degrees of freedom; cannot perform the angled insertion or complex path tasks of a 6-axis arm
- 300 mm reach restricts to compact bench-top cells only
- Nachi SC-series ecosystem is smaller than Epson's and Yamaha's SCARA accessory libraries
- Not collaborative; full guarding required
FAQ
What is a SCARA robot and why use one?
SCARA (Selective Compliance Assembly Robot Arm) is a 4-axis robot architecture with compliance in horizontal motion and rigidity in the vertical axis. This makes it faster and more precise for horizontal assembly, insertion, and screwdriving than a 6-axis articulated arm at the same payload class.
What is the SC300 payload and reach?
The SC300 has a 3 kg payload and 300 mm reach. It is designed for compact bench-top cells performing high-speed precision assembly and insertion tasks.
What repeatability does the SC300 achieve?
The SC300 achieves ±0.01 mm repeatability, the best specification in Nachi's robot range. This is suitable for PCB component insertion, medical device assembly, and precision dispensing.
What applications is the SC300 best suited to?
The SC300 is best for PCB component insertion, connector placement, precision screwdriving, dispensing, and medical device assembly where high speed and ±0.01 mm precision in a 300 mm horizontal envelope are required.
How does the SC300 compare to the Epson T3?
The Epson T3 has the same 3 kg payload, 300 mm reach, and ±0.01 mm repeatability. Both are market-standard compact SCARAs. The Epson T3 has a larger ecosystem and broader global support; the SC300 is preferred in Nachi-incumbent Japanese supply chains.