57  BLDC  (S)  (A)- (A)  20  01 - 33  (B) - 500-(A)

          1         2              3       4          5      6      7         8       9          10     11

1. Motor Frame Size.

2. Motor Type: "BLDC" indicates brushless DC motor.

3. Motor Dimension Type： "BLDC" for square

                             "BLDCS" for round        

                             "BLDCW" for outer rotor       

4. Motor features： No Show: Regular 

                            "F":    Low cogging Torque

                            "G":     High speed

5. Other motor characteristics are distinguished by different letters

6. Motor Stator Height: 20 means 20mm long.

7. Motor Parameter Code

8. Output Shaft Length: 33 means 33mm long, if the front output shaft is 33mm and the rear output shaft is 

                                  10mm, then it will be 3310

9. Special Marking

10. Motor Lead wire Length: 500 means 500mm long.

11. Motors with other special parameters are distinguished by different letters.