The AK45-10 KV75 is lighter (260 g against 262 g) and shallower (43 mm against 45.2 mm), and turns faster at the output (150 RPM against 120 RPM). The AK45-10 V3.0 KV75 draws less current at its rating (1.9 A against 2.1 A). They match on continuous torque, peak torque, torque constant and diameter.
The AK45-10 KV75 is US$134 and the AK45-10 V3.0 KV75 is US$175. That is US$53.60 per rated N·m for the AK45-10 KV75 and US$70.00 per rated N·m for the AK45-10 V3.0 KV75.
| AK45-10 KV75 | AK45-10 V3.0 KV75 | |
|---|---|---|
| Reduction Ratio | 10:1 | 10:1 |
| Rated Torque (N·m) | 2.5 | 2.5 |
| OD (mm) | 53 | 53 |
| Weight (g) | 260 | 262 |
| Peak Torque (N·m) | 7 | 7 |
| Rated Voltage (V) | 24 | 24 |
| Rated Speed (RPM) | 150 | 120 |
| No-Load Speed (RPM) | 180 | 180 |
| Rated Current (A) | 2.1 | 1.9 |
| Peak Current (A) | 5 | 5 |
| Maximum Torque Density (N·m/kg) | 26.9 | 26.9 |
| Height (mm) | 43 | 45.2 |
| Backlash (arcmin) | 18 | 18 |
| Kv (RPM/V) | 75 | 75 |
| Kt (N·m/A) | 0.127 | 0.127 |
| Ke (V/kRPM) | 13.33 | 13.33 |
| Phase to Phase Resistance (mΩ) | 2200 | 2200 |
| Phase to Phase Inductance (μH) | 1330 | 1330 |
| Rotor Inertia (g·cm²) | 89 | 157.33 |
| Motor Constant (N·m/√W) | 0.0858 | 0.0858 |
| Mechanical Time Constant (ms) | 0.6 | — |
| Pole Pairs | 14 | 14 |
| Number of Slots | 24 | 24 |
| Winding Type | Delta | — |
| Number of Encoder | 1 | 2 |
| Inner Loop Encoder Type | Magnetic Encoder | Magnetic Encoder MT6835 |
| Inner Ring Encoder Resolution | 14bit | 16bit |
| CAN Connector | A1257WR-S-3P | XT30PW (2+2) -M |
| UART Connector | A1257WR-S-3P | A1257WR-S-3P |
| Power Connector | XT30PW-M | — |
| Temperature Sensor | NTC MF51B 103F3950 | NTC MF51B 103F3950 |
| Noise dB (65cm away the motor) | 60 | 50 |
| Basic Dynamic Load Rating Cr (N) | 2810 | 2810 |
| Basic Static Load Rating C0r (N) | 2760 | 2760 |
| Operation Ambient Temperature | -20℃~50℃ | -20℃~50℃ |
| Insulation Level | C | C |
| Driving Way | FOC | FOC |
| Application | Legged Robot, Exoskeleton, AGV | Legged Robot, Exoskeleton, AGV |
| Back Drive (N·m) | — | 0.1 |
| Outer Ring Encoder Type | — | Magnetic Encoder MT6835 |
| Outer Ring Encoder Resolution | — | 16bit |
| Communication Method | — | CAN |
Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.