1.High precision; low noise
2.Use cross roller bearing
3.High reduction ratio with almost zero backlash. Can reduce speed down to as low as 1:10000
4.The sizes are some of the most compact of all gearboxes
| Descriptions \ Models | SPR250 | SRB150FA-90 |
| Continuous Torque (kgf*m/NM) | 6.6/65.3 | 13.89/136.19 |
| Max. Torque (kgf*m/NM) | 20/196 | - |
| Breaking Point (kgf*m/NM) | 60/588 | 41.69/408.57 |
| Permissible Input Rotation (r/min) | 3000 | 3000 |
| Backlash (arc-min) | 5 | ±15sec |
| Inertia (kg*cm2) | 0.481 | 200 |
| Weight (kg) | 20.5 | 5.3 |