The AK45-36 KV80 is lighter (340 g against 349 g) and shallower (54 mm against 56.5 mm). They match on continuous torque, peak torque, torque constant, current draw, diameter and output speed.
The AK45-36 V3.0 KV80 is US$208 and the AK45-36 KV80 is US$168. That is US$26.00 per rated N·m for the AK45-36 V3.0 KV80 and US$21.00 per rated N·m for the AK45-36 KV80.
| AK45-36 V3.0 KV80 | AK45-36 KV80 | |
|---|---|---|
| Reduction Ratio | 36:1 | 36:1 |
| Rated Torque (N·m) | 8 | 8 |
| OD (mm) | 55 | 55 |
| Weight (g) | 349 | 340 |
| Peak Torque (N·m) | 24 | 24 |
| Rated Voltage (V) | 24 | 24 |
| Rated Speed (RPM) | 40 | 40 |
| No-Load Speed (RPM) | 52 | 52 |
| Rated Current (A) | 2 | 2 |
| Peak Current (A) | 6.5 | 6.5 |
| Maximum Torque Density (N·m/kg) | 70.5 | 70.5 |
| Height (mm) | 56.5 | 54 |
| Backlash (arcmin) | 12 | 12 |
| Back Drive (N·m) | 0.8 | 0.8 |
| Kv (RPM/V) | 80 | 80 |
| Kt (N·m/A) | 0.11 | 0.11 |
| Ke (V/kRPM) | 12.5 | 12.5 |
| Phase to Phase Resistance (mΩ) | 1800 | 1.8 |
| Phase to Phase Inductance (μH) | 1100 | 1.1 |
| Rotor Inertia (g·cm²) | 181.9 | 32 |
| Motor Constant (N·m/√W) | 0.15 | 0.15 |
| Pole Pairs | 14 | 14 |
| Number of Slots | 24 | 24 |
| Number of Encoder | 2 | 33 |
| Inner Loop Encoder Type | Magnetic Encoder MT6835 | 14bit |
| Inner Ring Encoder Resolution | 16bit | — |
| Outer Ring Encoder Type | Magnetic Encoder MT6835 | — |
| Outer Ring Encoder Resolution | 16bit | 1 |
| Communication Method | CAN | — |
| CAN Connector | XT30PW (2+2) -M | A1257WR-S-3P |
| UART Connector | A1257WR-S-3P | XT30PW-M |
| Temperature Sensor | NTC MF51B 103F3950 | NTC MF51B 103F3950 |
| Noise dB (65cm away the motor) | 50 | 65 |
| 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 | F |
| Driving Way | FOC | FOC |
| Application | Legged Robot, Exoskeleton, AGV | Legged Robot, Exoskeleton, AGV |
| Mechanical Time Constant (ms) | — | 0.83 |
| Winding Type | — | Star |
| Power Connector | — | Magnetic Encoder |
Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.