The GL35 KV100 without encoder draws less current at its rating (1.3 A against 1.62 A), is lighter (90 g against 107 g), narrower (41.8 mm against 46.5 mm) and shallower (21 mm against 21.5 mm), and turns faster at the output (815 RPM against 430 RPM). The GL40 KV70 without encoder has more continuous torque (0.25 N·m against 0.15 N·m), more peak torque (0.5 N·m against 0.46 N·m) and a higher torque constant (0.150 N·m/A against 0.115 N·m/A).
The GL35 KV100 without encoder is US$62 and the GL40 KV70 without encoder is US$82. That is US$413.33 per rated N·m for the GL35 KV100 without encoder and US$328.00 per rated N·m for the GL40 KV70 without encoder.
| GL35 KV100 without encoder | GL40 KV70 without encoder | |
|---|---|---|
| Rated Torque (N·m) | 0.15 | 0.25 |
| OD (mm) | 41.8 | 46.5 |
| Weight (g) | 90 | 107 |
| Peak Torque (N·m) | 0.46 | 0.5 |
| Rated Voltage (V) | 16 | 16 |
| Rated Speed (RPM) | 815 | 430 |
| No-Load Speed (RPM) | 1320 | 1015 |
| Rated Current (A) | 1.3 | 1.62 |
| Peak Current (A) | 4 | 3.3 |
| Maximum Torque Weight Ratio (N·m/kg) | 5.11 | 4.67 |
| Height (mm) | 21 | 21.5 |
| Kv (RPM/V) | 100 | 70 |
| Kt (N·m/A) | 0.115 | 0.150 |
| Ke (V/kRPM) | 11.54 | 15.00 |
| Phase to Phase Resistance (mΩ) | 3600 | 4500 |
| Phase to Phase Inductance (μH) | 2100 | 1800 |
| Inertia (g·cm²) | 61 | 74 |
| Mechanical Time Constant (ms) | 1.66 | 1.48 |
| Electrical Time Constant (ms) | 0.58 | 0.40 |
| Pole Pairs | 7 | 14 |
| Winding Type | Star | Star |
| Operation Ambient Temperature | -20℃~50℃ | -20℃~50℃ |
| Driving Way | FOC | FOC |
| Application | Gimbal, Radar | Gimbal, Radar |
Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.