Can the Fourier GR-1 Still Be Bought?
The GR-1 product page has been removed from Fourier's site and the brochure is no longer listed in the download centre; the model is at the end of its life cycle. Fourier's current humanoid focus is the GR-3 and the wheeled GRW. If you have a specific GR-1 requirement you can reach us through the contact form, but for a new project we suggest evaluating the current models or the alternatives deliverable today.
Specifications
| Heading | Value |
|---|---|
| Dimensions | 1650 × 515 × 320 mm |
| Weight | Approximately 55 kg (approximately 60 kg on Pro editions) |
| Arm span | 1680 mm (GR-1), 1665 mm (GR-1L) |
| Body degrees of freedom | 32 (legs 6+6, waist 3, head 3, arms 7+7) |
| Total actuators | 44 (dexterous hands) / 34 (grippers) |
| Hand degrees of freedom | 6 + 6 |
| Walking speed | 5 km/h |
| Single-hand payload | 3 kg |
| Peak joint torque | 230 N·m |
| Actuator | Fourier Smart Actuator (FSA) |
| Battery | 460 Wh; charging at 46 V / 2 A |
| Supply and power | 46.2 V; maximum approximately 550 W |
| Processor | Intel i7-13700H (6P + 8E, 20 threads, 1.6-5.0 GHz) |
| Vision | RealSense depth camera; six RGB cameras in the pure-vision solution |
| Audio | Ring-shaped microphone |
| Material | Aluminium alloy and engineering plastic |
Figures come from Fourier's published GR-1 product brochure and the joint definitions in Fourier's open simulation model repository.
Differences Between the Four Editions
| Measure | GR-1 | GR-1L | GR-1 Pro | GR-1L Pro |
|---|---|---|---|---|
| End-effector | Dexterous hand | Gripper | Dexterous hand | Gripper |
| Body | GR1T1 | GR1T1 | GR1T2 | GR1T2 |
| Weight | Approximately 55 kg | Approximately 55 kg | Approximately 60 kg | Approximately 60 kg |
| Arm span | 1680 mm | 1665 mm | 1680 mm | 1665 mm |
| Total actuators | 44 | 34 | 44 | 34 |
| Body degrees of freedom | 32 | |||
All four editions share a 165 cm height and 32 body degrees of freedom. The difference is the end-effector and the body revision.
What Changed Between Generations
On the GR-1 the waist has three axes, the head three, and the body totals 32. On the second-generation GR-2 the waist drops to one and the head to two, bringing the total to 29. This is not a regression but a choice: a three-axis waist raises control complexity and mass at the body's most critical point. The freed budget moved to the hand; with the 12-DoF dexterous hand the GR-2 reaches 53 total actuators. Peak torque also rises from 230 N·m to 436 N·m and the FSA 2.0 brings a second encoder: in the first generation's single-encoder arrangement, backlash after the reducer stayed invisible to the control loop. The third-generation GR-3 then changes direction entirely and invests in the perception layer: 55 degrees of freedom, 31 pressure sensors and an Alcantara surface.
Humanoid Alternatives Deliverable Today
The Unitree H2 (182 cm, 70 kg, 31 degrees of freedom) and the compact Unitree G1 (132 cm, 35 kg, Jetson Orin) can be ordered in Turkey today with 4-6 week delivery, a 1-year official warranty, on-site commissioning and engineering support across Turkey. If you want to stay within the Fourier family, the GR-3 is the current humanoid and the N1 the open-source research platform. See the humanoid robot category for the wider picture.