R = Round Can 园罐形
S = Brush type 有电刷
3 = Armature dia. code 电枢直径代码
8 = Magnet size or case lenght 磁铁类型或容器长度
0 = 3 poles 3极
S = Magnet type 磁铁类型
H = Metal and plastic endcap 金属和塑料端盖
XX = Diameter of magnet wire 磁力线直径,40 是磁力线直径代码
(N)NN = number of windings 绕组线圈数,45 是45圈