Brushless DC Air Blower Features:
1: High speed, specialized high-speed ball bearing(NMB) offering long service life and lower noise
2: High pressure and airflow output by compact size design
3: High efficiency, much more efficient than brush motor blower
4: High reliability, specialized controller make the working more reliable
5: High intelligent, PWM speed regulation, positive inversion, PG signal feedback, intelligent controlling
Technical Parameters:
| Model | OWB7040AL-12V |
| Voltage | 12VDC |
| Current Range | 2.4A~4.5A |
| Life time (MTTF) | >10000 hours |
| Bearing | NMB Ball Bearing |
| Insulation class | F |
| Driver baord | External |
| Speed Control | PWM or 0~5V |
| Weight | 80g |
Mechanical Size:


Wiring Diagram:

Notes:
1.Do not use max pressure ad working point,this point is not safe since airflow is too small
2.To add a filter onto the inlet can make the blower run longer time
3.The right impeller run direction is CCW
Blower Performance:
OWB7040AL-12V blower can reach maximum 19m3/h airflow at 0 kpa pressure and maximum 5.5kpa static pressure. It has maximum output air power when this blower run at 3kPa resistance if we set 100% PWM. It has maximum efficiency when this blower run at 3.6kPa resistance if we set 100% PWM. Other load point performance
refer to below P-Q curve

FAQ:
Can we connect this centrifugal air blower directly onto power source?