The RI30 KV260 draws less current at its rating (1.98 A against 5.6 A), is lighter (40 g against 155.9 g), narrower (38 mm against 60 mm) and shallower (14 mm against 23 mm), and turns faster at the output (4110 RPM against 1440/2320/3190 RPM). The RI60 KV120 without hall sensor has more continuous torque (0.57 N·m against 0.076 N·m), more peak torque (1.63 N·m against 0.23 N·m) and a higher torque constant (0.100 N·m/A against 0.03673 N·m/A).
The RI30 KV260 is US$58 and the RI60 KV120 without hall sensor is US$111. That is US$763.16 per rated N·m for the RI30 KV260 and US$194.74 per rated N·m for the RI60 KV120 without hall sensor.
| RI30 KV260 | RI60 KV120 without hall sensor | |
|---|---|---|
| OD (mm) | 38 | 60 |
| Weight (g) | 40 | 155.9 |
| Rated Torque (N·m) | 0.076 | 0.57 |
| Peak Torque (N·m) | 0.23 | 1.63 |
| Rated Voltage (V) | 24 | 24/36/48 |
| Rated Speed (RPM) | 4110 | 1440/2320/3190 |
| No-Load Speed (RPM) | 6240 | 2532/3798/5064 |
| Rated Current (A) | 1.98 | 5.6 |
| Motor Constant Km (N·m/√W) | 0.0247 | 0.1054 |
| Peak Current (A) | 7.72 | 16.8 |
| Maximum Torque Weight Ratio (N·m/kg) | 5.75 | 10.46 |
| Height (mm) | 14 | 23 |
| Kv (RPM/V) | 260 | 120 |
| Kt (N·m/A) | 0.03673 | 0.100 |
| Ke (V/kRPM) | 0.0038 | 9.03 |
| Phase to Phase Resistance (mΩ) | 2.2 | 900 |
| Phase to Phase Inductance (μH) | 1.41 | 877.5 |
| Inertia (g·cm²) | 4.23 | 33.05 |
| Mechanical Time Constant (ms) | 0.69 | 0.30 |
| Electrical Time Constant (ms) | 0.64 | 0.98 |
| Pole Pairs | 7 | 14 |
| Winding Type | - Phase - | 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.