Buy Motors and other mechanical devices for a robotics project

Building a robotics/science project with moving parts? Stop, choose, and shop from various types of motors - Brushed DC motors, brushless motors, servos, and steppers.

Humanoid Robots | DC Motors | BO Motors | Geared DC Motor | Servo Motor & Controller | Stepper Motor & Controller | Gears, Pulleys, Belts | Robotics Motor Wheels & Chassis | Motor DriversJohnson Geared DC MotorPlanetary Gear MotorDC Dosing Pump & Solenoid ValveDC Cooling Fans

View as Grid List

166 items

Page
Set Descending Direction
per page
  1. Out of stock
    Compare
    12V DC Lock Electric Solenoid Assembly
    Rs 507.11 Rs 429.75
  2. Compare
    Linear Actuator Motor
    Rs 618.62 Rs 524.25
  3. Compare
    9-60V 20A DC Motor Speed Controller
    Rs 608.88 Rs 516.00
  4. Out of stock
    Compare
    MG995 360° Servo Motor
    Rs 413.00 Rs 350.00
  5. Compare
    Solenoid valve 12V
    Special Price Rs 413.00 Rs 350.00 was Rs 590.00
  6. Compare
    4 Wheel Drive Gray Chassis with Castor Wheel Slot
    Rs 156.94 Rs 133.00
  7. Compare
    100 RPM Geared Motor
    Rs 155.76 Rs 132.00
  8. Compare
    NEMA17 Stepper Motor 34mm
    Rs 5,997.94 Rs 5,083.00
  9. Compare
  10. Compare
    L293D IC (2 pcs)
    Rating:
    95%
    Rs 253.70 Rs 215.00
  11. Out of stock
    Compare
    Coin Type Micro Vibration Motor
    Rating:
    95%
    Special Price Rs 82.00 Rs 69.49 was Rs 94.40
  12. Compare
    ULN2003 Stepper Motor Driver Module
    Rating:
    95%
    Special Price Rs 79.00 Rs 66.95 was Rs 90.86
  13. Out of stock
    Compare
    3.5 RPM DC Geared Motor
    Rating:
    100%
    Rs 271.40 Rs 230.00
  14. Out of stock
    Compare
    Black Metal Chassis
    Rating:
    100%
    Special Price Rs 129.80 Rs 110.00 was Rs 236.00
  15. Compare
  16. Compare
    Plastic Gears (5 Types)
    Rating:
    95%
    Rs 322.14 Rs 273.00
  17. Out of stock
    Compare
    5000RPM 6V Dosing Pump
    Rating:
    100%
    Rs 1,135.16 Rs 962.00
  18. Compare
    R385 DC PUMP
    Rating:
    90%
    Special Price Rs 303.26 Rs 257.00 was Rs 389.40
  19. Out of stock
    Compare
    R365 DC PUMP
    Rating:
    93%
    Rs 540.44 Rs 458.00
  20. Compare
    BTS7960B 43A H-Bridge Motor Driver
    Rating:
    93%
    Rs 890.90 Rs 755.00
View as Grid List

166 items

Page
Set Descending Direction
per page

Electric motor working principles: How do electric motors work?

Electric motors work based on the principle of electromagnetic induction. A current carrying coil is placed between a permanent magnet of the north and south pole. When an electric current is passed through the coil, a magnetic field is generated by the coil based on the direction of the current. This causes the two arms of the coil to repel away from the permanent magnet by causing a rotational motion. Once the coil reaches halfway, the direction the current is switched and the process repeats again, thereby causing a fast rotational motion. The direction of the force, current and magnetic field can be determined by Fleming’s Left Hand Rule.

How do I choose a motor for a robotics project?

The type of motor to choose for a particular project depends on the application and the use case of the motor.
  1. DC motors - Suitable for application where the motor just needs to spin up and/or down fast.
  2. Stepper motors - Used in cases where more precision of motor movement is required.
  3. Servo motors - Used in applications where absolute precision and angle of the motor is of highest importance.

 

Are Servo motors AC or DC?

Servo motors come in both AC and DC types, although DC is more commonly used. DC servo motors work on the basis of a feedback loop where the angle of the motor shaft is measured by an encoder, so the embedded microcontroller can give the correcting signal to the motor,

 

What are the most common types of electric motors?

BO motors are just a colloquial term for a DC motor that are used in applications such as robotics
The DC motor is a device that transforms electrical energy into mechanical energy in form of rotation. It works based on the principle of electromagnetism. DC motors have inductors inside, which produce the magnetic field used to generate movement.
A stepper motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. They have multiple coils organized inside along the stator and periodic excitation of the coils causes the rotor to align, hence simulating steps.
A servomotor is a rotary actuator that allows for precise control of angular or linear position and velocity. It makes use of a DC motor, gears, encoder and a tiny microcontroller to form a servo motor. It follows the mechanism of negative feedback loop to achieve great precision in the position and angles of the motor shaft

What are the different ways of using motors in a robotics project?

  • DC motors can be used to run wheels on any mobile based robots.
  • Stepper motors are used in applications like robotic arms, where arm’s positional accuracy and stepper motor’s energized stall is required.
  • Servo motors are used in applications where precise angular output is desired by the user, like steering wheel in self driving cars, etc.

Frequently asked questions about DC Motor

How to choose a DC Motor for a robot?

DC motors for a robot must be chosen based:
- Torque characteristic
- Load characteristic
  - Power consumption
Robot needs to be equipped with adequate suitable DC motors which are capable of driving the bot comfortably and allow the max weight expected while also trying to keep power consumption as low as possible

How to make a robotics arm using a motor?

Robotic arms require precise movements of joints in different directions with minimal to no error, while remaining flexible as much as possible. Therefore stepper motor is ideal for this particular use case, as it takes accurate steps with no increase in error with each graduation. Stepper motors generally also have more torque and can rotate full 360 degrees unlike many low cost servo motors.

 

If the robotic arm is required to be very precise, then industrial grade servo motors are used since it offers really good precision and accuracy.