The AKE80-8 KV30 has a higher torque constant (0.32 N·m/A against 0.272 N·m/A), draws less current at its rating (4.8 A against 21 A), is lighter (570 g against 1400 g), narrower (87 mm against 107.5 mm) and shallower (32 mm against 43.5 mm), and turns faster at the output (150 RPM against 120 RPM). The AKE90-8 KV35 has more continuous torque (55 N·m against 12 N·m) and more peak torque (170 N·m against 30 N·m).
The AKE80-8 KV30 is US$381 and the AKE90-8 KV35 is US$542. That is US$31.75 per rated N·m for the AKE80-8 KV30 and US$9.85 per rated N·m for the AKE90-8 KV35.
| AKE80-8 KV30 | AKE90-8 KV35 | |
|---|---|---|
| Reduction Ratio | 8:1 | 8:1 |
| Rated Power (W) | 188 | 700 |
| Rated Torque (N·m) | 12 | 55 |
| OD (mm) | 87 | 107.5 |
| Weight (g) | 570 | 1400 |
| Peak Torque (N·m) | 30 | 170 |
| Rated Voltage (V) | 48 | 48 |
| Rated Speed (RPM) | 150 | 120 |
| No-Load Speed (RPM) | 195 | 210 |
| Rated Current (A) | 4.8 | 21 |
| Peak Current (A) | 12 | 72 |
| Maximum Torque Weight Ratio (N·m/kg) | 52 | 121.4 |
| Height (mm) | 32 | 43.5 |
| Kv (RPM/V) | 30 | 35 |
| Kt (N·m/A) | 0.32 | 0.272 |
| Ke (V/kRPM) | 33 | 0.0285 |
| Phase to Phase Resistance (mΩ) | 870 | 164 |
| Phase to Phase Inductance (μH) | 990 | 235 |
| Mechanical Time Constant (ms) | 2.3 | 2.18 |
| Electrical Time Constant (ms) | 1.13 | 1.4329 |
| Pole Pairs | 21 Inertia (g·cm²） 143 | 21 Inertia (g·cm²） 3377.08 |
| Winding Type | Star | Delta |
| Operation Ambient Temperature | (℃) -20℃~50℃ | (℃) -20℃~50℃ |
| Driving Way | FOC | FOC |
| Application | Exoskeleton | Exoskeleton |
Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.