| Model | 57BL01 | 57BL02 | 57BL03 | 57BL04 | 57BL05 | 57BL06 |
| Number of Poles | 4 | 4 | 4 | 4 | 4 | 4 |
| Number of Phases | 3 | 3 | 3 | 3 | 3 | 3 |
| Nominal Voltage (VDC) | 24 | 24 | 24 | 24 | 24 | 24 |
| Rated speed (RPM) | 2500 | 3000 | 3000 | 3000 | 3000 | 3000 |
| Continuous Torque (N-m) | 0.057 | 0.11 | 0.165 | 0.22 | 0.33 | 0.44 |
| Rated Current (Amps) | 1.2 | 2.3 | 3 | 4.4 | 6.6 | 8.6 |
| Output Power (Watts) | 15 | 34 | 52 | 69 | 103 | 138 |
| Peak Torque(N-m) | 0.18 | 0.38 | 0.58 | 0.8 | 1.2 | 1.6 |
| Peak Current (Amps) | 3.6 | 6.8 | 9 | 13.2 | 19.8 | 25.8 |
| Torque constant (N-m/Amps) | 0.074 | 0.06 | 0.061 | 0.062 | 0.062 | 0.063 |
| Back EMF (V/kRPM) | 7.75 | 6.3 | 6.4 | 6.5 | 6.5 | 6.6 |
| Rotor inertia （g·cm2） | 32 | 42 | 58 | 72 | 106 | 140 |
| Body Length (L) （mm） | 41.5 | 46.5 | 56.5 | 66.5 | 86.5 | 106.5 |
| Mass（kg） | 0.34 | 0.42 | 0.55 | 0.66 | 0.89 | 1.15 |