Product Name: 57bl Planetary Gear Brushless DC Motor 12V 24V 36V 48V with Planet Gearbox Option BLDC Motor with Integrated Optical Encoder and Electric Power-off Brake Model NO.: 57BL Certification: ISO9001 Structure and Working Principle: Brushless Number of Poles: 4 Casing Protection: Closed Type Function: Driving Operating Speed: Adjust Speed Application: Universal, Industrial, Household Appliances, Car, Power Tools Trademark: OEM ODM Transport Package: Standard Export Package Specification: 57mm Origin: China HS Code: 85013100 Product Description 57mm Brushless DC Motor with Planetary Gear BoxOption for 12v 24v 36v 48v 60vBearingHigh quality ball bearingPoles4- poles 8-polesProtection classIP40 IP55 optionInsulation classclass: FBelow are only some typical models.For more information or a customed motor,Pls contact us.Option for Electric Brake, Planetary Gearbox, Worm Gearbox, Optical Encoder IntegratedENCODER AND BRAKE INTEGRATEDConTROLLER INTEGRATED VERSION