# Nachi Robotics SRA166H-01

Hardware · `SRA166H-01` · verification: source checked

The Nachi SRA166H-01 is a six-axis articulated industrial robot with a 166 kg wrist payload and 2,654 mm reach. It is floor-mounted and uses an AC servo drive system, intended for spot welding, machine tending, material handling, and palletizing. It is paired with a Nachi FD controller for motion and servo-gun control.

## Specification

| Property | Value |
|---|---|
| Category | industrial robot |
| Axes | 6 |
| Payload | 166 kg |
| Reach | 2654 mm |
| Repeatability | 0.15 mm |
| Weight | 1100 kg |
| Operating temp min | 0 °C |
| Operating temp max | 45 °C |

### Joints

| Name | Range min (°) | Range max (°) | Max speed (°/s) |
|---|---|---|---|
| J1 | -180 | 180 | 115 |
| J2 | -80 | 60 | 105 |
| J3 | -146.5 | 150 | 115 |
| J4 | -210 | 210 | 175 |
| J5 | -125 | 125 | 171 |
| J6 | -210 | 210 | 280 |

## Connected

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

## Safety

- Operating ambient conditions: 0–45 °C, 20–85% RH without condensation, and vibration not more than 0.5G (4.9 m/s²).
- Permitted height is not higher than 1,000 m above sea level; above that, permitted temperature is affected by height.
- A-weighted equivalent sound level is 79.6 dB while operating at maximum speed with rated load.

## Study notes

- Six-axis articulated robot with AC servo drive and floor mounting.
- Uses a Nachi FD controller with 4th-generation servo gun control software for spot welding.
- Hollow-arm design routes welding cables and hoses internally to improve cable reliability and reduce interference with peripheral equipment.
- For SRA166H-01, allowable static wrist load torque is 960 N·m at J4 and J5, and 520 N·m at J6.
- For SRA166H-01, allowable wrist moment of inertia is 100 kg·m² at J4 and J5, and 50 kg·m² at J6.
- Position repeatability conforms to JIS B 8432; noise is measured per JIS Z 8737-1 (ISO 11201).
- Applications listed are machine tending, material handling, palletizing, and spot welding.

## Sources

1. [SRA166H](https://www.nachirobotics.com/product/sra166h/) (accessed 2026-10-25)

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