Inspecting high-voltage transmission lines is dangerous, slow work for humans - which is exactly why robots are taking it over. This CubeMars case feature looks at Transgrid’s Gorilla MK1, an inspection robot that moves along transmission lines, and the RI80 frameless inrunner torque motor inside it.
What the Video Shows
According to CubeMars, the RI80 gives the Gorilla MK1 stable motion and high load capacity while reducing human exposure to hazardous environments - the core value proposition of robotic line inspection.
Original Video
Source: CubeMars Official YouTube Channel
Video: CubeMars RI80 Powers Safer, High-Performance Inspection Robots
Product Featured: CubeMars RI80 V2.0 KV75
The RI80 is a large through-hole frameless inrunner, which lets the joint pass structure and cabling through its center - a practical advantage in a compact robot that must grip, pivot and traverse hardware designed for human lineworkers.
Product Details
| Specification | Details |
|---|---|
| Manufacturer | CubeMars |
| Product | RI80 V2.0 KV75 Frameless Inrunner |
| Category | Frameless torque motor |
| Rated Voltage | 24 / 36 / 48 V |
| Rated Power | 172 W |
| Rated Torque | 1.45 Nm (peak 4.1 Nm) |
| Rated Speed | 1135–2430 rpm depending on voltage |
| Diameter | 85 mm |
| Length | 27 mm |
| Weight | 411 g |
| Applications | Inspection robots, robotic joints |
Specifications sourced from the official CubeMars product data.
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Conclusion
Gorilla MK1 is a strong example of frameless motors enabling robots that operate where people should not. For engineers designing inspection or traversal robots, the RI80’s through-hole format and torque density make it worth evaluating early in the joint design.
