The RO60 KV115 Lite has a higher torque constant (0.094 N·m/A against 0.087 N·m/A), draws less current at its rating (8.5 A against 15 A), is lighter (195 g against 265 g), narrower (70.5 mm against 88.6 mm) and shallower (15 mm against 17.7 mm), and turns faster at the output (4200 RPM against 4000 RPM). The RO80 KV105 Lite has more continuous torque (1.3 N·m against 0.8 N·m) and more peak torque (4.5 N·m against 2.4 N·m).
The RO60 KV115 Lite is US$87 and the RO80 KV105 Lite is US$117. That is US$108.75 per rated N·m for the RO60 KV115 Lite and US$90.00 per rated N·m for the RO80 KV105 Lite.
| RO60 KV115 Lite | RO80 KV105 Lite | |
|---|---|---|
| Rated Torque (N·m) | 0.8 | 1.3 |
| OD (mm) | 70.5 | 88.6 |
| Weight (g) | 195 | 265 |
| Peak Torque (N·m) | 2.4 | 4.5 |
| Rated Voltage (V) | 48 | 48 |
| Rated Speed (RPM) | 4200 | 4000 |
| No-Load Speed (RPM) | 5230 | 4800 |
| Rated Current (A) | 8.5 | 15 |
| Peak Current (A) | 40 | 55 |
| Maximum Torque Weight Ratio (N·m/kg) | 12.3 | 15.1 |
| Height (mm) | 15 | 17.7 |
| Kv (RPM/V) | 115 | 105 |
| Kt (N·m/A) | 0.094 | 0.087 |
| Ke (V/kRPM) | 8.28 | 9.07 |
| Phase to Phase Resistance (mΩ) | 300 | 120 |
| Phase to Phase Inductance (μH) | 395 | 103 |
| Inertia (g·cm²) | 800 | 1600 |
| Mechanical Time Constant (ms) | 2.86 | 2.95 |
| Electrical Time Constant (ms) | 1.32 | 0.86 |
| Pole Pairs | 14 | 21 |
| Winding Type | Star | Delta |
| Operation Ambient Temperature | -20℃~50℃ | -20℃~50℃ |
| Hall Sensor | No | No |
| Temperature Sensor | No | No |
| 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.