# Nachi Robotics SRA100J-01

Hardware · `SRA100J-01` · verification: source checked

The SRA100J-01 is a six-axis articulated industrial robot from Nachi's SRA series, driven by AC servo motors and intended for spot welding and other material-handling tasks. It has a 100 kg payload, a 1,634 mm reach, and ±0.1 mm repeatability, with floor mounting and an operating temperature range of 0 to 45 °C.

## Specification

| Property | Value |
|---|---|
| Category | industrial robot |
| Axes | 6 |
| Payload | 100 kg |
| Reach | 1634 mm |
| Repeatability | 0.1 mm |
| Weight | 670 kg |
| Operating temp min | 0 °C |
| Operating temp max | 45 °C |

### Joints

| Name | Range min (°) | Range max (°) |
|---|---|---|
| Axis 1 | -180 | 180 |
| Axis 2 | -120 | 60 |
| Axis 4 | -360 | 360 |
| Axis 5 | -135 | 135 |
| Axis 6 | -360 | 360 |

## Connected

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

## Safety

- Explosion-proof construction is not available.
- Permitted use is not above 1,000 m altitude; above that, the permitted temperature is affected by height.
- Installation-face vibration must not exceed 0.5 G (4.9 m/s²).
- Measured noise is 78.1 dB(A) under maximum payload and maximum speed.

## Study notes

- Document refers to an FD controller with 4th-generation servo gun control software; no Nachi FD controller id is available in the reference list.
- The SRA series is described with payloads from 100 kg to 240 kg, including floor-mount, invert-mount, and long-reach models over 3 m; these are series-level statements, not specific to SRA100J-01.
- Axis 3 range is listed under 'Max. working envelope' as +1.57 to -2.18 rad (+90 to -125°), not under an 'Axis 3' label.
- Repeatability conforms to JIS B 8432; noise is measured under JIS Z 873-1 (ISO 11201) at maximum payload and maximum speed.
- Allowable static load torque: Axis 4 560 N·m, Axis 5 560 N·m, Axis 6 290 N·m.
- Allowable moment of inertia: Axis 4 45 kg·m², Axis 5 45 kg·m², Axis 6 22.7 kg·m².
- Application examples listed: machine tending, material handling, palletizing, spot welding, and dispensing.
- Ambient humidity is stated as 200 to 595 kRH with no low condensation allowed; installation-face vibration limit is 0.5 G (4.9 m/s²).

## Sources

1. [SRA100J](https://www.nachirobotics.com/product/sra100j/) (accessed 2026-10-25)

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