Rainbow Robotics RB Series Cobots

A Cobot Range for Different Automation Needs

The RB Series is not built around a single standard arm. Instead, Rainbow Robotics offers models with noticeably different combinations of payload, reach and physical size.

At the lighter end, the RB3-730 is intended for compact, precise work such as electronics, welding and bonding. The RB3-1200 keeps the 3 kg payload but extends the working radius to 1,200 mm, making it more suitable where reach is more important than lifting capacity. The RB5-850 is positioned as the general-purpose model for tasks such as handling, assembly and fastening.

Higher-payload models support more demanding material-handling applications. The RB10-1300 can handle packaging, CNC loading and pallet-loading tasks, while the RB16-900 prioritises higher payload within a relatively compact working area. At the top of the range, the RB20-1900 combines a 20 kg payload with a 1,900 mm reach for palletizing, packaging and large-work-envelope handling.

The newer RB6-1700 adds another long-reach option, while the upcoming RB6-920 is designed to provide a middle-ground 6 kg payload and 920 mm reach.

Designed for Practical Integration

Rainbow Robotics has focused on making the RB Series suitable for integration into existing production and service environments. The arms can be mounted on horizontal surfaces, walls, ceilings, fixed posts or at other angles, allowing the robot to be positioned around machines, conveyors and workstations instead of requiring a standard floor-mounted layout.

Programming is handled through Rainbow Robotics’ graphical interface, with program-tree views, built-in actions, jog controls and hand-guiding. Operators can physically guide the robot into position, while integrators can use external control scripts, industrial communications and offline-programming tools.

The available control boxes provide digital and analogue I/O together with Ethernet-based protocols such as Modbus TCP, EtherNet/IP and PROFINET. Support is also listed for systems from Siemens, OMRON and Mitsubishi. This makes the platform easier to connect to PLCs, sensors, grippers and other automation equipment.

RB Series Model Comparison

Model: RB3-730
Payload: 3 kg | Reach: 730 mm | Robot Weight: 11 kg | Repeatability: ±0.05 mm | IP Rating: IP54
Best suited for: Compact electronics work, precise handling, welding, bonding and applications where low robot weight and a small footprint are important.

Model: RB3-1200
Payload: 3 kg | Reach: 1,200 mm | Robot Weight: 22.4 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: Long-reach, light-payload applications such as welding, grinding, CNC machine tending and mobile automation setups.

Model: RB5-850
Payload: 5 kg | Reach: 927.7 mm | Robot Weight: 22 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: General handling, assembly, fastening, machine loading and selected food, beverage or service-automation tasks.

Model: RB10-1300
Payload: 10 kg | Reach: 1,300 mm | Robot Weight: 37.1 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: Medium-load packaging, CNC loading, pallet loading and material-handling applications requiring additional reach.

Model: RB16-900
Payload: 16 kg | Reach: 900 mm | Robot Weight: 32 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: Handling heavier objects within a relatively compact work area, including packaging and CNC loading.

Model: RB20-1900
Payload: 20 kg | Reach: 1,900 mm | Robot Weight: 75 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: Palletizing, packaging and heavy material handling requiring both the highest payload and longest reach in the series.

Model: RB6-1700
Payload: 6 kg | Reach: 1,700 mm | Robot Weight: 39 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: Applications that require a moderate payload across a particularly large working radius. The specific task fit should be confirmed against tooling, cycle-time and payload-centre requirements.

Model: RB6-920 — To Be Released
Payload: 6 kg | Reach: 920 mm | Robot Weight: 19.6 kg | Repeatability: ±0.05 mm | IP Rating: IP66
Best suited for: Future applications requiring a middle-range 6 kg payload and compact 920 mm working radius.