# FANUC SR-20iA Environmental

Hardware · `SR-20iA Environmental` · verification: source checked

The SR-20iA Environmental is a 4-axis SCARA robot with a 20 kg wrist payload and 1100 mm reach, built for secondary food handling and harsh environments. It uses an IP65 body and wrist, corrosion-resistant bolts and bellows covers, with cables and pipes routed internally. It runs on the R-30iB Compact Plus controller and is programmed through the web-based iRProgrammer interface or an optional teach pendant.

## Specification

| Property | Value |
|---|---|
| Category | scara robot |
| Axes | 4 |
| Payload | 20 kg |
| Reach | 1100 mm |
| Repeatability | 0.02 mm |
| Weight | 67 kg |
| IP rating | IP65 |

### Joints

| Name | Range min (°) | Range max (°) | Max speed (°/s) |
|---|---|---|---|
| J1 | -145 | 145 | 440 |
| J2 | -145 | 145 | 500 |
| J4 | -720 | 720 | 1700 |

## Connected

- Manufacturer: [FANUC](https://machineschema.com/manufacturer/fanuc.md)
- Controllers: [FANUC R-30iB Compact Plus](https://machineschema.com/controller/fanuc-r-30ib-compact-plus.md), [FANUC R-30iB Plus](https://machineschema.com/controller/fanuc-r-30ib-plus.md)
- Variant of: [FANUC SR-20iA](https://machineschema.com/hardware/fanuc-sr-20ia.md)

## Safety

- IP65 rating on body and wrist protects against dust and water in washdown and harsh environments.
- Corrosion-resistant bolts and bellows covers are fitted for secondary food applications.

## Study notes

- Repeatability is stated per axis: ±0.020 mm (J1, J2), ±0.01 mm (J3), ±0.005° (J4).
- J3 is a linear vertical axis with 300 mm travel; a 450 mm option is available.
- J3 maximum speed is 2800 mm/s (linear), so it cannot be expressed as a joint rotation speed.
- Maximum push force is 250 N.
- J4 allowable moment/inertia is -/0.45 (N·m / kg·m2).
- The smaller SR-12iA Environmental option in the same series has 12 kg payload and 900 mm reach.
- Programming is via the iRProgrammer web interface on a tablet or desktop, or an optional teach pendant.
- Controller functions listed include iRVision, iRPickTool and conveyor tracking.
- Controller series is R-30iB Plus; the compatible controller is the R-30iB Compact Plus.

## Sources

1. [SR-20iA Environmental](https://www.fanucamerica.com/products/robot/sr-20ia-environmental) (accessed 2026-10-25)
2. [sr 20ia environmental scara data sheet](https://www.fanucamerica.com/uploads/files/data-sheets/sr-20ia-environmental-scara-data-sheet.pdf) (accessed 2026-10-25)

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