DC axial fans Fans of the series by a cylindrical aluminum alloy frame, PBT plastic fan and the motor constitute the body, and through the double-sided flange, solid and has a small size, maintenance-free, convenient installation, and has a noise low, little vibration, reliable operation and excellent performance. The fan is mainly used for ground automatic control devices, electronic equipment, medical equipment, computers, power supplies, welding machines, packaging and printing equipment, satellite communications, CNC machinery, office automation, and other works of ventilation purposes. Temperature (℃): -20 ℃ ~ +60 ℃ ball bearing (B), -10 ℃ ~ +40 ℃ oil bearing (S) relative humidity (%): 90% ~ 95%: 55Kpa (G) 74.8Kpa (H ) Vibration: vibration frequency 10-55Hz low-frequency limit, double amplitude 1.5mm shock: (peak acceleration) 150m/S2SSS life: oil-bearing 30,000 hours, 60,000 hours Ball (25 ℃ state laboratory)