... equipments. 2.Model Explanation55 SDZ 031.55indicates motor frame No,. The frame No,is indicated with 55,75,85 ... The frame No, corresponds with frame Dia. 55,75,85,130mm).2.SDZ indcates Lanthanide PM DC Motor.3 ... .03 indicates derivative structure , its No, is indicated with 01,02,03(Each frame No ... shaft extension),AA5(double shaft extension) and frame No,(55-130). 2.Flange Mounting:A3(single ...