Import Bl3657 Bl3657i Dc Brushless Motor — Buy in wholesale FOB from Supplier in China

The BL3657 BL3657I is a 36 mm inner-rotor DC brushless motor from Shen Zhen Ke Gu Motor Co., Ltd, built in a 36.0 mm by 57.0 mm frame and rated for 12 V or 24 V operation. It delivers no-load speeds of 4000 rpm or 5000 rpm depending on winding, with a built-in driver and Hall-effect sensor for closed-loop commutation. The motor supports PWM pulse-width speed control, clockwise and counter-clockwise rotation, and outputs an FG speed feedback signal. Over-current, over-voltage and under-voltage protection are integrated. Minimum rated life is 20000 hours. The design targets applications where low noise, low electromagnetic interference and compact diameter matter more than brute torque.

Construction centres on a small-diameter inner-rotor BLDC layout with a 36 mm OD, a form factor shared with the BL3626i, BL3630i, BL3640i, BL3650i and BL3657i variants in the same series. The built-in controller removes the need for an external driver board, saving space in tight assemblies. Hall sensors provide rotor-position feedback for smooth commutation, while the FG line lets a host controller monitor actual shaft speed. The motor can be paired with the supplier's 36 mm planetary or spur gear reducers when higher torque at lower speed is required. Custom windings and shaft modifications are noted as available, though buyers should confirm exact tolerances, shaft diameter and lead-wire configuration for their batch.

Typical buyers include designers of automotive subsystems, communications hardware, smart-home actuators, medical devices, security cameras, small appliances and precision machinery. The low-EMC characteristic suits equipment that must pass CISPR or FCC emission limits without heavy external filtering. In trade terms, the supplier operates from a facility in Shenzhen's Nan Shan District and ships motors to more than 50 countries. Import buyers should verify the exact voltage and speed variant, shaft and mounting dimensions, connector type, gearhead pairing if any, and whether CE or RoHS documentation is available for their specific order. Response-rate data is currently unavailable, so direct enquiry is needed to confirm lead times and sample availability.

Shen Zhen Ke Gu Motor Co., Ltd is registered in Shenzhen, Guangdong, at T2 High-Tech Park on South 7th Road in the Nan Shan District. The company describes itself as a high-tech private enterprise covering research, development, production and sales of miniature DC motors, precision gearboxes and micro-transmission systems. It also offers drive-solution services from design through component manufacture to assembly. The supplier claims implementation of the IS9001:2015 management system. Its product range extends beyond the BL3657 series to a long list of brushed and brushless DC motors spanning RF-300, RF-310, RF-320, RF-330, RF-370, FF-130, FF-180, FC-280, EG-530, FF-N20, FF-N20, FF-M20, RS-360, RS-365 and GA12YN20 families, indicating broad catalogue depth in small DC drives.

The listing carries a Harbor trust tier and shows a response rate of 0.00 percent with zero average response hours. This does not necessarily mean the supplier is inactive, but it does mean that buyers should not rely on rapid automated quoting and should instead initiate direct contact to confirm stock, technical documentation and sample lead times. The stated export footprint covers more than 50 countries and regions, though no named clients or certified volumes are provided. Buyers should request ISO 9001:2015 certificate copies, RoHS compliance statements and any relevant motor safety test reports (for example, EN 60034 or UL 1004 references) before committing to volume orders.