---
title: "RI80 V2.0 KV75 vs EC frameless 90 flat (260 W)"
description: "Compare RI80 V2.0 KV75 and EC frameless 90 flat (260 W): catalog torque, mass, speed, price and source/revision caveats. Not a matched-condition test or compatibility recommendation."
canonical: https://actuatorlist.com/comparisons/cubemars-ri80-v2-kv75-vs-maxon-ec-frameless-90-flat-260w
last-updated: 2026-11-01T14:05:43.000Z
---
# RI80 V2.0 KV75 vs EC frameless 90 flat (260 W)

Compare RI80 V2.0 KV75 and EC frameless 90 flat (260 W): catalog torque, mass, speed, price and source/revision caveats. Not a matched-condition test or compatibility recommendation. Unknown means not documented, not zero.

## RI80 V2.0 KV75

![RI80 V2.0 KV75: illustrative catalog photo; revision/variant unconfirmed](/actuator-images/cubemars-ri80-v2-kv75.webp)

[Catalog and sources](/actuators/cubemars-ri80-v2-kv75)

## EC frameless 90 flat (260 W)

Photo unavailable.

[Catalog and sources](/actuators/maxon-ec-frameless-90-flat-260w)

## Specifications

| Specification | RI80 V2.0 KV75 | EC frameless 90 flat (260 W) |
| --- | --- | --- |
| Peak torque (catalog) | 4.1 N·m | 9.76 N·m |
| Rated torque (catalog) | 1.45 N·m | 1 N·m |
| Maximum speed (catalog) | 2430 rpm | 5000 rpm |
| Mass | 411 g | 814 g |
| Gear ratio | 1:1 | 1:1 |
| Voltage | 12-48 V | 48 V |
| Price (catalog, not a live quote) | 132.9 USD | 437 USD |
| Encoder (resolution is not accuracy) | Optional Hall-sensor version; bare frameless kit (add own encoder) | None (frameless rotor/stator kit; add own sensor) |
| Complete actuator efficiency | Unknown: not documented | Unknown: not documented |
| Cooling / thermal duty | Unknown: not documented | Unknown: not documented |
| Loaded repeatability | Unknown: not documented | Unknown: not documented |
| Calibrated simulation model | Unknown: not documented | Unknown: not documented |

Sensor bits do not establish loaded accuracy. CAD geometry is not a calibrated simulation model. Verify thermal conditions, duty and exact revision before engineering use.

Catalog photo; illustrative. Confirm hardware revision/variant.

Catalog headline specs spot-checked: confirm revision. The legacy verified flag is a catalog spot-check, not verification of every field, installed revision or independent performance validation. Catalog entry only; confirm the exact revision and operating conditions with the linked source.

## Arithmetic from catalog values

Differences are subtraction of retained catalog values, not measured advantages. Ratings may have different test conditions. Unknown means not documented; manufacturer claims and catalog spot-checks are not independent validation.

- Peak torque: RI80 V2.0 KV75 (4.1 N·m) minus EC frameless 90 flat (260 W) (9.76 N·m) = -5.66 N·m.
- Rated torque: RI80 V2.0 KV75 (1.45 N·m) minus EC frameless 90 flat (260 W) (1 N·m) = 0.45 N·m.
- Maximum speed: RI80 V2.0 KV75 (2430 rpm) minus EC frameless 90 flat (260 W) (5000 rpm) = -2570 rpm.
- Mass: RI80 V2.0 KV75 (411 g) minus EC frameless 90 flat (260 W) (814 g) = -403 g.

## Catalog source links

### RI80 V2.0 KV75 / catalog sources

[Catalog-linked product page](https://www.cubemars.com/product/ri80-v2-0-kv75-frameless-inrunner-torque-motor.html) · [Catalog-linked datasheet](https://www.robotshop.com/products/cubemars-ri80-kv75-ri-series-frameless-inrunner-torque-motor)

### EC frameless 90 flat (260 W) / catalog sources

[Catalog-linked product page](https://www.maxongroup.com/maxon/view/product/542099) · [Catalog-linked datasheet](https://datasheets.globalspec.com/ds/maxon-motor-ag/542099/abc9aff5-cce5-4b70-a592-8dbb20e40d6b)

## Related catalog comparisons

Catalog specifications and source caveats, not compatibility recommendations.

- [R60 KV115 vs RI80 V2.0 KV75](/comparisons/cubemars-r60-kv115-vs-cubemars-ri80-v2-kv75)
- [RI60 KV120 vs RI80 V2.0 KV75](/comparisons/cubemars-ri60-kv120-vs-cubemars-ri80-v2-kv75)
- [RI80 V2.0 KV75 vs TQ-RoboDrive ILM85x26](/comparisons/cubemars-ri80-v2-kv75-vs-tq-robodrive-ilm85x26)
- [EC frameless 90 flat (260 W) vs TQ-RoboDrive ILM85x26](/comparisons/maxon-ec-frameless-90-flat-260w-vs-tq-robodrive-ilm85x26)

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