# Nachi SRA166T

Hardware · `SRA166T` · verification: source checked

The SRA166T is a six-axis articulated industrial robot built by Nachi for spot welding and material handling. It carries a 166 kg payload, reaches 3086 mm and weighs 1310 kg, and is driven by AC servo motors. It is normally paired with Nachi's FD controller, whose servo gun software controls electrode closing and weld pressure.

## Specification

| Property | Value |
|---|---|
| Category | industrial robot |
| Axes | 6 |
| Payload | 166 kg |
| Reach | 3086 mm |
| Weight | 1310 kg |

## Connected

- Manufacturer: [Nachi Robotics](https://machineschema.com/manufacturer/nachi-robotics.md)

## Study notes

- Nachi FD controller is the intended partner controller; it is not in the reference controller list, so no controller is linked here.
- The FD controller includes fourth-generation servo gun control software and supports pressure calibration at up to 10 points.
- Integrated spot weld timers are offered in AC and DC versions, programmable from the robot teach pendant with weld result storage for traceability.
- The SRA series spans payloads from 100 kg to 240 kg and includes floor-mount, invert (shelf) mount and long-reach models over 3 metres.
- A hollow arm version routes spot welding utilities (cooling water, weld power, signals, servo gun cables) inside the arm.
- An A-Trac cable management system is available as an option, with corresponding robot dimensions and faceplate hole patterns.
- Documented applications are material handling and spot welding; documented mounts are floor and shelf mount.
- The axis range and speed table in the source document is corrupted and internally contradictory, so joint-level data is not recorded.

## Sources

1. [SRA166T](https://www.nachirobotics.com/product/sra166t/) (accessed 2026-10-25)

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