Weight
Part A485 g225 g lower
Part B710 g
Part comparison
A side-by-side comparison of source-backed specifications within the same subcategory.
Directional spec summary
Counts across 4 numeric specifications with a clear higher-or-lower direction.
Part A leads
3
Tied
0
Part B leads
1
These are metric-by-metric differences, not an overall performance score. Check the values below.
16 specifications compared side by side.
| Compare bySpecification | ACubeMars / T-MotorCubeMars / T-Motor AK80-9 V3.0 KV100 | BCubeMars / T-MotorCubeMars / T-Motor RO100 robotic actuator |
|---|---|---|
| Physical1 | ||
| Weight | 485 g225 g lower | 710 g |
| Performance3 | ||
| Rated torque | 9 Nm5 Nm higher | 4 Nm |
| Peak torque | 22 Nm10 Nm higher | 12 Nm |
| Rated speed | 390 rpm | 2000 rpm1,610 rpm higher |
| Electrical2 | ||
| Nominal voltage | 48 V | 48 V |
| Rated currentUse-dependent | 12 A | 20 A |
| Mechanical & integration8 | ||
| Motor kind | QDD actuator | QDD actuator |
| Drive principle | BLDC/PMSM | BLDC/PMSM |
| Architecture | Integrated motor reducer driver | Integrated motor reducer driver |
| Gear typeUse-dependent | planetary | direct |
| QDD | Yes | Yes |
| Backdrivable | Yes | Yes |
| Integrated driver | Yes | Yes |
| MIT mode support | Yes | Yes |
| Control & communication2 | ||
| Communication interfacesUse-dependent | CAN;UART | CAN |
| Control modes | MIT;servo | MIT;servo |
Product sources used by this comparison