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Double high precise ball bearings
Ambient temperature range -20Â°C - +70Â°C
Insulation resistance over 100 Mega Ohm tested by a resistor at DC 500V
Insulation isolation grade B, Protection grade IP54
Material Frame : Die-Casting ADC12 Aluminium Alloy, finished by black paint, anti-corrosion, anti-oxidization.
Material Impeller: Made by inyection mould with black plastic PBT+ 30% glass fiber + VO class anti-burning liquid.
Power Connection UL3266 Lead wire.
Life test : 25Â°C 60.000 hours (with ball bearings)
Compact Shaded Pole motor with inner rotor running, resistance protection design.