B5020 SERIES – 50mm square x 20mm frame sizes– Thermal / Lock protection type– Low noise and low power design– TUV/cTUVus agency listed– RoHS Compliance– Weight 22g– Operating Temperature -10℃~70℃– Ball bearings or Sleeve bearing structure– Custom added-value options (i.e. special leadwires, connector installation and etc.)– Options : Tachometer output signal or Locked rotor output signal Performance Curve Dimension * Speed range at rated voltage is ±10% of rated speed.