The AKE60-8 KV80 is lighter (260 g against 570 g), narrower (69 mm against 87 mm) and shallower (25 mm against 32 mm), and turns faster at the output (180 RPM against 150 RPM). The AKE80-8 KV30 has more continuous torque (12 N·m against 5 N·m), more peak torque (30 N·m against 12.5 N·m) and a higher torque constant (0.32 N·m/A against 0.13 N·m/A). They match on current draw.
The AKE60-8 KV80 is US$245 and the AKE80-8 KV30 is US$381. That is US$49.00 per rated N·m for the AKE60-8 KV80 and US$31.75 per rated N·m for the AKE80-8 KV30.
| AKE60-8 KV80 | AKE80-8 KV30 | |
|---|---|---|
| Reduction Ratio | 8:1 | 8:1 |
| Rated Power (W) | 95 | 188 |
| Rated Torque (N·m) | 5 | 12 |
| OD (mm) | 69 | 87 |
| Weight (g) | 260 | 570 |
| Peak Torque (N·m) | 12.5 | 30 |
| Rated Voltage (V) | 24 | 48 |
| Rated Speed (RPM) | 180 | 150 |
| No-Load Speed (RPM) | 240 | 195 |
| Rated Current (A) | 4.8 | 4.8 |
| Peak Current (A) | 12 | 12 |
| Maximum Torque Weight Ratio (N·m/kg) | 46 | 52 |
| Height (mm) | 25 | 32 |
| Kv (RPM/V) | 80 | 30 |
| Kt (N·m/A) | 0.13 | 0.32 |
| Ke (V/kRPM) | 12.5 | 33 |
| Phase to Phase Resistance (mΩ) | 577 | 870 |
| Phase to Phase Inductance (μH) | 704 | 990 |
| Mechanical Time Constant (ms) | 1.2 | 2.3 |
| Electrical Time Constant (ms) | 1.7 | 1.13 |
| Pole Pairs | 14 Inertia (g·cm²） 647.39 | 21 Inertia (g·cm²） 143 |
| Winding Type | Star | Star |
| 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.