# Universal Robots UR8 Long

Hardware · `UR8 Long` · verification: source checked

The UR8 Long is a six-axis collaborative robot arm with a 1750 mm reach and an 8 kg payload (10 kg under the boundary conditions given in the manual). It is built for welding, pick and place and inspection work that needs precise linear motion and high acceleration, and it has a safety-rated input at the tool flange. The arm is IP65 rated and certified for ISO Class 4 cleanrooms, and it runs from a separate control box with a 12-inch PolyScope touchscreen teach pendant.

## Specification

| Property | Value |
|---|---|
| Category | collaborative robot |
| Axes | 6 |
| Payload | 8 kg |
| Reach | 1750 mm |
| Repeatability | 0.08 mm |
| Weight | 44.7 kg |
| Max TCP speed | 5000 mm/s |
| Power consumption | 0.615 kW |
| IP rating | IP65 |
| Operating temp min | 0 °C |
| Operating temp max | 50 °C |

### Joints

| Name | Range min (°) | Range max (°) | Max speed (°/s) |
|---|---|---|---|
| Base | -360 | 360 | 180 |
| Shoulder | -360 | 360 | 180 |
| Elbow | -360 | 360 | 240 |
| Wrist 1 | -360 | 360 | 300 |
| Wrist 2 | -360 | 360 | 300 |
| Wrist 3 | -360 | 360 | 300 |

## Connected

- Manufacturer: [Universal Robots](https://machineschema.com/manufacturer/universal-robots.md)
- Protocols: [EtherNet/IP](https://machineschema.com/protocol/ethernet-ip.md), [Modbus TCP](https://machineschema.com/protocol/modbus-tcp.md), [PROFINET](https://machineschema.com/protocol/profinet.md)

## Safety

- 23 configurable safety functions are available on the robot.
- Safety functions comply with EN ISO 13849-1 (PLd Category 3), EN ISO 10218-1 and UL 1740.
- A native safety-rated input at the tool flange lets hand-guiding and teaching end-effectors integrate into the robot's safety architecture without external safety modules.
- Operating ambient temperature range is 0-50 °C.
- Arm protection class is IP65 and it is rated for ISO Class 4 cleanroom use; the control box is IP44 and the teach pendant is IP54.

## Study notes

- Joint architecture is 2-1-3; the arm has 6 rotating joints.
- Footprint is Ø204 mm and the arm weighs 44.7 kg without cable; cable length is 6 m.
- Arm materials are aluminium, plastic and steel; mounting is possible in any orientation.
- Tool flange is EN ISO 9409-1-50-4-M6 with an M8 8-pin female connector; tool power supply is 12/24 V at 2 A (dual pin) or 1 A (single pin).
- Tool flange I/O: 2 digital in, 2 digital out, 2 analog in (or 1 x RS-485).
- Force/torque sensing range is ±150.0 N and ±10.0 Nm, with precision ±7.5 N / ±0.2 Nm and accuracy ±8.3 N / ±0.5 Nm.
- Control box I/O: 16 digital in, 16 digital out, 2 analog in, 2 analog out, 4 quadrature digital inputs; I/O power supply 24 V, 2 A.
- Control box: IP44, 460 x 449 x 254 mm, 12 kg, 100-240 VAC 50-60 Hz, powder-coated steel; an OEM version exists.
- Teach pendant: IP54, 1280 x 800 pixel display, 300 x 231 x 50 mm, 1.8 kg including 1 m cable, 4.5 m cable.
- Supported software interfaces include Modbus TCP (client/server), EtherNet/IP adapter, PROFINET device with PROFIsafe, and ROS/ROS2; the injection moulding machine interface (SPI AN-146 and Euromap-67) applies only to the OEM version.
- Humidity limit is ≤90% RH non-condensing; noise is below 67 dB(A).
- Safety compliance is stated against EN ISO 13849-1 (PLd Category 3), EN ISO 10218-1 and UL 1740.

## Sources

1. [UR8 Long - Long reach. Lean footprint. No compromise.](https://www.universal-robots.com/products/ur8-long-cb5/) (accessed 2026-10-25)
2. [https://www.universal-robots.com/manuals/latest/en/datasheets/ur8long/](https://www.universal-robots.com/manuals/latest/en/datasheets/ur8long/) (accessed 2026-10-25)

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