High quality 250W 3000 rpm brushless DC motor with 24V or 48V. 3 phase BLDC motor controller and planetary gearbox / worm gearbox are available here. This high torque 250W BLDC motor is often used in electric vehicle applications.

Basic Specifications

• Model: RDDLZ-D5BLD250
• Matched Controller Model: RDDLZ-BLD750 (Click to the product page)
• Rated Power: 250W
• Rated Voltage: 24V DC / 48V DC (Optional)
• Rated Current: 13.03A at 24V, 6.51A at 48V
• Phase: 3 phase
• Holding Torque: 0.8 Nm
• Peak Torque: 2.39 Nm
• Rated Speed: 3000 rpm for standard (or 2000 rpm when matching the worm gearbox)
• No-load Speed: 3300 rpm
• Square Flange Size: 86 mm
• Weight: 3 kg

Technical Parameters

• Working Efficiency: 85%
• Number of Poles: 4 pairs of poles (8 poles)
• Brake Apparatus Voltage: 24V DC/ 48V DC, (Electromagnetic brake will trigger when the DC supply cuts off)
• Brake Size: Φ76.8*27.7mm
• No-load Current: <5.21A at 24V, <3.11A at 48V
• Insulation Grade: F
• Protection Grade: IP54
• Working Temperature: 10℃~+40℃
• Humidity: ≤90% (no condensation)
• Motor Lead Length: 100cm
• Certificate: CE, RoHS, ISO/TS16949

Features

1. High performance and low consumption
   250W BLDC motor is a three phase electric motor, which is especially suited for applications requiring higher efficiency and power density.
2. Wide application range and good control effect
   Brushless DC motor works with a matching controller (RDDLZ-BLD750) may achieve simple to complex control, turn from CW to CCW, and meet various communication requirements (RS232, RS485, CAN, etc.). BLDC controller can be controlled through 0-5VDC analog signal to adjust the speed.
3. Wide control speed torque range
   Brushless DC motor works with a gearbox (choose a planetary gearbox with gear ratio from 4:1 to 200:1 or worm gearbox with gear ratio from 7.5:1 to 100:1) effectively reduce the motor's speed and moment of inertia to increase torque in your application, because the gearbox can control the start/stop and change speed in time.
4. Low noise and smooth operation
   Brushless DC motor has no brushes, no sparks will be generated during operation, which greatly reduces friction.
5. Good protection performance and continuous duty (24/7)
   250W BLDC motor kit adopts a new type of sealing device, which has good protection performance and strong adaptability to the environment, and works continuously in harsh environments such as corrosion and humidity.

Line Define

Dimension (Unit=mm)

Speed-Torque Curve

• Instantaneous maximum torque line
  The maximum torque momentarily impacts the load when the motor is started.
  Beyond this torque, the over-current protection of the driver will cause the motor to stop.
• Short time operation area
  The motor can run at a short time within this torque range at different speeds.
  If the operation time is too long, the motor will generate heat, which may cause the motor to stop or burn.
• Rated operating torque line
  The rated torque of motor running at different speeds, and the motor can run for a long time at this torque.
• Continuous operating area
  When the motor rotates at different speeds, it runs continuously in this corresponding zone.

Details

Tips: 2 Types of Brushless DC Motor

Basically, BLDC are of two types, one is outer rotor motor and other is inner rotor motor. The basic difference between the two is only in designing, their working principles are same.

1. Inner Rotor Design. In an inner rotor design, the rotor is located in the centre of the motor and the stator winding surround the rotor. As the rotor is located in the core, rotor magnets do not insulate heat inside and heat get dissipated easily. Due to this reason, inner rotor designed motor produces a large amount of torque and validly used.
2. Outer Rotor Design. In outer rotor design, the rotor surrounds the winding which is located in the core of the motor. The magnets in the rotor trap the heat of the motor inside and do not allow to dissipate from the motor. Such type of designed motor operates at lower rated current and has low cogging torque.