DC fan motor General Specification Electric Strength: 5mA msx at 1500VAC for 1 min between lead wire and frame Insulation Resistance: 10M ohm between lead wire and frame(DC 500V) Life Expectancy(Ball bearing): 50000hrs min at 40 degree C/L10 relative humidity 65%+/-20% Life Expectancy(Hypro bearing): >40000hrs min at 40 degree C/L10 relative humidity 65%+/-20% Life Expectancy(Fluid Dynamic bearing): >60000hrs min at 40 degree C/L10 relative humidity 65%+/-20% Operation Temperature: -10~75 degree C(+14~167 degree F),normal; -10~90 degree C(+14~194 degree F), specification Storage Temperature: -40~75 degree C(-40~167 degree F) Protection: Motor protection and polarity protection Lead wire: UL1571 AWG28,30; UL1007 AWG24,26; UL1061 AWG26 Plastic Material: Black PBT (UL94V-0) glass fiber ADDA AD4028 series DC fan motor detailed specification: 1. frame size(mm): 40X40X28 2. bearing system type: ball bearing 3. rated voltage:12V,24V 4. rated speed: 4500~10000RPM 5. maxiam air flow: 13.5CFM 6. maxiam pressure: 11.99mmAq 7. maxiam noise: 42.5dBA 8. function: by impedance,FG,RD 9. safety approvals: CE,TUV,UL,cUL