Warranty:1 Year After-sales Service Provided: Online support Product name: 24vdc brushless electric mini centrifugal air blower fan size: D60*H40mm Weight: 134g Bearing: NMB ball bearing driver board:External Life time(MTTF): >10,000 hours Noise:62dB Motor type:Three Phase DC Brushless Motor Static pressure:7.6kPaType: Centrifugal Fan Applicable Industries:Manufacturing Plant, medical equipment Electric Current Type:DC Blade Material:Aluminum Mounting:industrial assembly Place of Origin:Zhejiang, China Brand Name:WONSMART Model Number:WS7040AL-24-V200 Voltage:24vdc Certification:ce, RoHSWS7040AL-24-V200 blower can reach maximum 16m3/h airflow at 0 kpa pressure and maximum 6.5kpa static pressure.When this blower run at 4.5kPa resistance if we set 100% PWM,it has maximum output air power when this blower run at 4.5kPa resistance if we set 100% PWM,it has maximum efficiency.Other load point performance refer to below P-Q curve:(1)WS7040AL-24-V200 blower is with brushless motors and NMB ball bearings inside which indicates very long life time; MTTF of this blower can reach more than 20,000hours 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.Q: Are you trading company or manufacturer? A: We are professional manufacturer specialized in Brushlees DC blower more than 10 years, and we export our production to customers directly. Q: When can I get the price? A:Usually we will send quotation to customer  within 8 hours after we get inquiry from you.Different number of stator and armature fields as well as how they are connected provide different inherent speed and torque regulation characteristics. The speed of a DC motor can be controlled by changing the voltage applied to the armature. Variable resistance in the armature circuit or field circuit allows speed control. Modern DC motors are often controlled by power electronics systems which adjust the voltage by "chopping" the DC current into on and off cycles which have an effective lower voltage. Since the series-wound DC motor develops its highest torque at low speed, it is often used in traction applications such as electric locomotives, and trams. The DC motor was the mainstay of electric traction drives on both electric and diesel-electric locomotives, street-cars/trams and diesel electric drilling rigs for many years. The introduction of DC motors and an electrical grid system to run machinery starting in the 1870s started a new second Industrial Revolution. DC motors can operate directly from rechargeable batteries, providing the motive power for the first electric vehicles and today's hybrid cars and electric cars as well as driving a host of cordless tools. Today DC motors are still found in applications as small as toys and disk drives, or in large sizes to operate steel rolling mills and paper machines. Large DC motors with separately excited fields were generally used with winder drives for mine hoists, for high torque as well as smooth speed control using thyristor drives. These are now replaced with large AC motors with variable frequency drives.This blower can be widely used onto air cushion machine, CPAP machine,ventilators.