The AKE80-8 KV30 has more continuous torque (12 N·m against 10 N·m), more peak torque (30 N·m against 25 N·m) and a higher torque constant (0.32 N·m/A against 0.199 N·m/A), draws less current at its rating (4.8 A against 6.9 A), and is narrower (87 mm against 98 mm) and shallower (32 mm against 43.9 mm). The AK80-8 KV60 without driver turns faster at the output (243 RPM against 150 RPM). They match on weight.
The AKE80-8 KV30 is US$381 and the AK80-8 KV60 without driver is US$526. That is US$31.75 per rated N·m for the AKE80-8 KV30 and US$52.60 per rated N·m for the AK80-8 KV60 without driver.
| AKE80-8 KV30 | AK80-8 KV60 without driver | |
|---|---|---|
| Reduction Ratio | 8:1 | 8:1 |
| Rated Power (W) | 188 | — |
| Rated Torque (N·m) | 12 | 10 |
| OD (mm) | 87 | 98 |
| Weight (g) | 570 | 570 |
| Peak Torque (N·m) | 30 | 25 |
| Rated Voltage (V) | 48 | 48 |
| Rated Speed (RPM) | 150 | 243 |
| No-Load Speed (RPM) | 195 | — |
| Rated Current (A) | 4.8 | 6.9 |
| Peak Current (A) | 12 | 21 |
| Maximum Torque Weight Ratio (N·m/kg) | 52 | 35 |
| Height (mm) | 32 | 43.9 |
| Kv (RPM/V) | 30 | 60 |
| Kt (N·m/A) | 0.32 | 0.199 |
| Ke (V/kRPM) | 33 | 19.8 |
| Phase to Phase Resistance (mΩ) | 870 | 430 |
| Phase to Phase Inductance (μH) | 990 | 214 |
| Mechanical Time Constant (ms) | 2.3 | 0.66 |
| Electrical Time Constant (ms) | 1.13 | 0.5 |
| Pole Pairs | 21 Inertia (g·cm²） 143 | 21 |
| Winding Type | Star | Star Backlash (°) 0.38 |
| Operation Ambient Temperature | (℃) -20℃~50℃ | -20℃~50℃ |
| Driving Way | FOC | FOC |
| Application | Exoskeleton | Legged Robot, Exoskeleton, AGV |
| Motor Constant Km (N·m/√W) | — | 0.30 |
| Back Drive (N·m) | — | 0.75 |
| Inertia (g·cm²) | — | 608.6 |
| Number of Encoder | — | 2 |
| Inner Loop Encoder Type | — | Magnetic Encoder |
| Inner Ring Encoder Resolution | — | 14bit |
| Outer Ring Encoder Type | — | Magnetic Encoder |
| Outer Ring Encoder Resolution | — | 15bit |
| CAN Connector | — | A1257WR-S-4P |
| UART Connector | — | A1257WR-S-4P |
| Power Connector | — | XT30PW-M |
| Temperature Sensor | — | NTC MF51B 103F3950 |
Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.