Certification: ce, RoHS Warranty: 1 Year After-sales Service Provided: Online support Life time(MTTF): >20,000hours (under 25 degree C) Weight: 886 grams Housing material:PC Size: 130mm*120mm Motor type:Three Phase DC Brushless Motor Controller: external Static pressure: 14kPaBrand name: Wonsmart High pressure with dc brushless motor Blower type: Centrifugal fan Voltage: 48vdc Bearing: NMB ball bearing Applicable Industries: Manufacturing Plant Electric Current Type: DC Blade Material: aluminium Mounting: Ceiling Fan Place of Origin:Zhejiang, ChinaWS130120S2-48-220-X300 blower can reach maximum 120m3/h airflow at 0 Kpa pressure and maximum 14kpa static pressure.It has maximum output air power when this blower run at 8.5 kPa resistance if we set 100% PWM, It has maximum efficiency when this blower run at 8.5 kPa resistance if we set 100% PWM.Other load point performance refer to below P-Q curve:(1) WS130120S2-48-220-X300 blower is with brushless motors and NMB ball bearings inside which indicates very long life time; MTTF of this blower can reach more than 15,000hours at 20degree C environmental temperature. (2) This blower needs no maintence (3) This blower drived by a brushless motor controller have many different control functions such as speed regulation,speed pulse output,fast acceleration, brake etc.it can be controlled by intelligent machine and equipment easily. (4) Drived by brushless motor driver the blower will have over current, under/over voltage,stall protections.This blower can be widely used onto vacuum machine,dust collector,floor treatment machine.Q: Are you factory or trading company? A: We are factory with 4,000 square meters and we have been focus on high pressure BLDC blowers for more than 10 years Q: Can we connect this centrifugal air blower directly onto power source? A: This blower fan is with BLDC motor inside and it needs a controller board to run.A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy, and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications.