The AKE50-8 KV110 draws less current at its rating (3 A against 3.8 A), is lighter (190 g against 380 g), narrower (61.2 mm against 79 mm) and shallower (22.5 mm against 43 mm), and turns faster at the output (240 RPM against 233/490 RPM). The AK60-6 V3.0 KV80 has more continuous torque (3 N·m against 2.5 N·m), more peak torque (9 N·m against 7.5 N·m) and a higher torque constant (0.135 N·m/A against 0.104 N·m/A).
The AKE50-8 KV110 is US$190 and the AK60-6 V3.0 KV80 is US$335. That is US$76.00 per rated N·m for the AKE50-8 KV110 and US$111.67 per rated N·m for the AK60-6 V3.0 KV80.
| AKE50-8 KV110 | AK60-6 V3.0 KV80 | |
|---|---|---|
| Reduction Ratio | 8:1 | 6:1 |
| Rated Torque (N·m) | 2.5 | 3 |
| OD (mm) | 61.2 | 79 |
| Weight (g) | 190 | 380 |
| Peak Torque (N·m) | 7.5 | 9 |
| Rated Voltage (V) | 24 | 24/48 |
| Rated Speed (RPM) | 240 | 233/490 |
| No-Load Speed (RPM) | 320 | — |
| Rated Current (A) | 3 | 3.8 |
| Peak Current (A) | 9 | 0.3/11.2 |
| Maximum Torque Weight Ratio (N·m/kg) | 39.5 | 23.68 |
| Height (mm) | 22.5 | 43 |
| Max Continuous Power (W) | 65 | — |
| Backlash (arcmin) | 9 | — |
| Backdrivable Torque (N·m) | 0.09 | — |
| Rotor Inertia (g·cm²) | 153.81 | — |
| Motor Constant (N·m/√W) | 0.097 | — |
| Kv (RPM/V) | 110 | 80 |
| Kt (N·m/A) | 0.104 | 0.135 |
| Ke (V/kRPM) | 7 | 12.5 |
| Phase Resistance (mΩ) | 792 | — |
| Phase Inductance (μH) | 560 | — |
| Pole Pairs | 14 | 14 |
| Number of Slots | 24 | — |
| Basic Dynamic Load Rating Cr (N) | 1100 | — |
| Basic Static Load Rating C0r (N) | 840 | — |
| Noise dB (65cm away the motor) | 65 | — |
| Operation Ambient Temperature | -20℃~50℃ | -20℃~50℃ |
| Insulation Level | F | — |
| Dielectric Strength | 500V | — |
| Insulation Resistance | 500V 10MΩ | — |
| Driving Way | FOC | FOC |
| Application | Exoskeleton, Robotic Arm | Legged Robot, Exoskeleton, AGV |
| Motor Constant Km (N·m/√W) | — | 0.15 |
| Back Drive (N·m) | — | 0.2 |
| Phase to Phase Resistance (mΩ) | — | 595 |
| Phase to Phase Inductance (μH) | — | 676 |
| Inertia (g·cm²) | — | 243.5 |
| Mechanical Time Constant (ms) | — | 0.81 |
| Electrical Time Constant (ms) | — | 0.69 |
| Winding Type | — | Star Backlash (°) 0.55 |
| Number of Encoder | — | 1 |
| Inner Loop Encoder Type | — | Magnetic Encoder |
| Inner Ring Encoder Resolution | — | 16bit |
| CAN Connector | — | XT30PW(2+2)-M |
| UART Connector | — | A1257WR-S-3P |
| 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.