How to calculate the size of the air shaft of the air conditioner motor? Below the size of the pressing shaft is represented by Y; the size of the plastic sealing positioning shaft head to the farthest spring position is represented by L; the protruding part of the plastic sealing shaft head is represented by S;
                                          Part I: Single shaft motor
When the iron shaft motor's output shaft end is on the non-outgoing side: Y = end cap stretching distance-pressing mold size-red steel thickness
                                         (40 for end caps is 38.5) (often 0.5)
When the output end of the iron shell motor is on the output side: Y = end cap stretching distance-non-press mold size-red steel thickness-wave compression size
                                           (Iron core-press mold size) (often 1.2)
Plastic-sealed motor: first determine whether the shaft head protrudes from the BB cover: S = L-card spring thickness- (magnetic ring thickness) -red steel thickness-end cover bottom thickness 
                                          (1) (3) (1.3)
If S> 0 (positive number), the shaft head is outside the BB cover, such as S <0 (negative number), it means that the positioning size shaft head is within the BB cover
The outlet end of the plastic-sealed motor is on the non-outgoing side: Y = the second step of the injection-molded stator + (PG board thickness) + BB cover height + protruding part S
                                          (4.5) (1.2)
The output end of the plastic-sealed motor is on the output side: Y = non-locating die second step + (PG board thickness) + BB cover height + protruding part

Second step of non-locating die = BMC thickness-second step of positioning die-core thickness-first step of non-locating die
                                         (Such as 32) (4.5) (4)