The RI50 KV100 without hall sensor draws less current at its rating (4.8 A against 7.1 A), and is lighter (180.8 g against 270.4 g) and narrower (54 mm against 76 mm). The RI70 KV95 without hall sensor has more continuous torque (0.94 N·m against 0.58 N·m), more peak torque (2.68 N·m against 1.67 N·m) and a higher torque constant (0.130 N·m/A against 0.120 N·m/A), is shallower (24 mm against 27 mm), and turns faster at the output (1270/1990/2710 RPM against 1090/1860/2600 RPM).
The RI50 KV100 without hall sensor is US$69 and the RI70 KV95 without hall sensor is US$139. That is US$118.97 per rated N·m for the RI50 KV100 without hall sensor and US$147.87 per rated N·m for the RI70 KV95 without hall sensor.
| RI50 KV100 without hall sensor | RI70 KV95 without hall sensor | |
|---|---|---|
| Rated Torque (N·m) | 0.58 | 0.94 |
| OD (mm) | 54 | 76 |
| Weight (g) | 180.8 | 270.4 |
| Peak Torque (N·m) | 1.67 | 2.68 |
| Rated Voltage (V) | 24/36/48 | 24/36/48 |
| Rated Speed (RPM) | 1090/1860/2600 | 1270/1990/2710 |
| No-Load Speed (RPM) | 2004/3006/4008 | 1956/2934/3912 |
| Rated Current (A) | 4.8 | 7.1 |
| Motor Constant Km (N·m/√W) | 0.1007 | 0.2011 |
| Peak Current (A) | 14.8 | 21 |
| Maximum Torque Weight Ratio (N·m/kg) | 9.24 | 9.91 |
| Height (mm) | 27 | 24 |
| Kv (RPM/V) | 100 | 95 |
| Kt (N·m/A) | 0.120 | 0.130 |
| Ke (V/kRPM) | 11.41 | 11.69 |
| Phase to Phase Resistance (mΩ) | 1420 | 418 |
| Phase to Phase Inductance (μH) | 1500 | 622.7 |
| Inertia (g·cm²) | 22.8 | 92.15 |
| Mechanical Time Constant (ms) | 0.22 | 0.23 |
| Electrical Time Constant (ms) | 1.06 | 1.49 |
| Pole Pairs | 7 | 14 |
| Winding Type | Star Phase 3 | Delta Phase 3 |
| Operation Ambient Temperature | -20℃~50℃ | -20℃~50℃ |
| Driving Way | FOC | FOC |
| Application | Cobot Arm, Exoskeleton | Cobot Arm, 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.