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Explore Different Motor Wheels Chassis for DIY Builds
Sometimes the hardest part of building something is finding the correct motor wheels chassis. These products are commonly used in robotics builds, STEM learning projects, automation systems, and electronics experiments. That is why we created this collection so you can easily explore different options in one place. Take a look through the products below and pick the motor wheels chassis that fits your project.
Buy Robot Wheels
Robocraze is the desirable place for robot wheels, our selection includes Metal Ball Caster Wheels, DIY Kits BO Wheels, and many more. All are made to improve your experience with robotics.
Our assortment of robot wheels and tires caters to various shaft dimensions and project specifications. From a strong steel 4WD chassis to a beautiful black metallic finish, we have everything you need to build your ideal robot. With discounts on particular items and free shipping on certain orders, you can shop with confidence, knowing you're getting a fantastic deal.
Categories Breakdown
Rubber Wheels – Standard hobby wheels with rubber tread for traction; ideal for indoor/outdoor robots.
Metal Wheels – Durable metal wheels or rims often used in rugged robotics or heavy-duty robots.
Ball Casters – Small ball wheels used for the third/fourth support point in differential drive robots or mobile platforms.
Chassis Kits – Pre-cut platform kits (metal, acrylic or plastic) including mounting holes for motors, boards, sensors.
BO Motors – BO (boxed) motors or “BO” style standard DC motors for wheels; includes gear-motors, high torque options, and standard hobby motors.
Education & STEM Kits: Students assemble mobile platforms, program movement, integrate sensors and control algorithms.
Comparison Guide: Wheel Types & Motor Torque
Wheel Types
Wheel Type
Traction & Terrain Suitability
Typical Use
Considerations
Rubber Wheels
Good grip on smooth floors, indoor/outdoor
Hobby bots, sensor platforms
Wear over time; tread may slip
Metal Wheels
High durability, suited for heavier loads
Industrial robots, outdoor rugged bots
May slip on smooth surfaces
Ball Casters
Supports movement in minimal footprint
Support wheel for differential drive robots
Provides support only; no drive force
Motor Torque
Motor Torque
Typical Load Handling
Use Case
Low Torque
Light robots, small wheels
Indoor bots, educational kits
Medium Torque
Moderate load, larger wheels (4″–6″)
RC cars, heavier sensor bots
High Torque
Heavy robots, large wheels, inclines
Outdoor rovers, automation carts
Assembly Guides for Chassis & Motor Connections
Chassis Mounting:
Select a chassis kit and attach motor brackets first.
Mount motors securely using appropriate screws and lock-nuts.
Ensure wheel clearance and alignment so wheels are co-planar.
Wheel Attachment:
For rubber wheels: press onto motor shaft or secure with set-screw.
For metal wheels: use coupling or adapter to match motor shaft diameter.
Add ball caster(s) as the third or fourth support point; position centrally for stable balance.
Motor Connections:
Wire motor gearboxes to motor driver or H-bridge.
Use proper gauge wires and avoid routing wires across rotating parts.
Connect motor power to a dedicated supply; keep logic supply separate if using microcontroller.
Controller & Sensor Mounting:
Mount your microcontroller (Arduino, ESP32), motor drivers and battery inside chassis.
Keep wiring tidy and secure with cable ties; avoid interference with motors.
Testing & Alignment:
Without wheels, spin each motor individually and ensure direction and mounting are correct.
Attach wheels and test movement forward/backward; adjust wheel alignment if robot drifts.
Maintenance & Usage Tips for Longer Life
Regularly inspect wheels for wear, cracks, or debris stuck in treads.
Check set-screws and couplings on wheels and motors-loosened ones cause wobble and inefficient motion.
Ensure motor shafts are free of rust and rotate smoothly; lubricate lightly if needed.
For ball casters: clean them periodically as dirt can cause drag and uneven movement.
Avoid overloading the robot: heavy loads reduce motor lifespan and drain batteries faster.
Use proper voltage and current rated for your motors; undervoltage results in drop-outs, overvoltage damages motor.
Secure wiring away from moving parts and rotating shafts-frayed wires cause shorts or motor failure.
For outdoor use, keep exposed metal wheels and chassis parts dry to prevent corrosion.
Buy Robot Chassis
Explore our chassis kits, available in different designs to satisfy your requirements. Our chassis kits are made to be flexible and user-friendly, which makes it easy to benefit you and make your robots come to life.
We offer free shipping for qualified orders and a lucrative purchase program. Robocraze is your go-to source for all robotics components.
Wheels enable robots to move efficiently on flat surfaces with minimal power consumption. They provide stability, speed, and simple mechanical design compared to legged systems. BO wheels are popular for DIY projects due to affordability and durability. Different wheel types (standard, omni, mecanum) offer varying maneuverability levels. Wheels allow robots to navigate smoothly in any direction, making them ideal for educational projects and autonomous applications.
2. What wheels are used for robots?
In Robots, commonly BO motor wheels are used on DIY robotic cars. They are made from a variety of materials, but the most common materials are plastic and rubber. These robot wheels and motors make it easier for the robotic car to move in any direction.
3. How does wheel size affect your robot?
When using a robot chassis with motors and wheels, the chassis design, engine RPM ratings, and engine timing programming are all affected by wheel size. The distance of the robot from the surface also depends on the wheel size. Indoor robots like the DB1 require only about 1 cm of space. Two drive wheels are used to propel and turn the robot (skid steering), and one or two caster wheels prevent the robot from tipping forward or backwards. The larger the robot wheel diameter, the faster the robot will be, but it will require more torque from the robot wheel motor. Smaller wheels should spin faster. During movement, friction can act to slow the robot down, depending on the grip material. Rubber tyres are mainly used for wheels as they have very high friction.
4. What are the BO motor and wheels?
A BO motor, also known as a (battery-operated) motor, is a hobbyist-grade DC motor that is used in small projects. It is made up of a small micro metal DC motor with gears to increase torque. The wheels are used with the BO motor in making smart robot cars, line followers and obstacle-avoiding robots, etc.
5. Are chassis kits compatible with standard motors?
Yes, the chassis kits in this collection are designed to work with standard DC gear motors and hobby motor types. Many kits specify mounting holes and motor brackets that align with common motor sizes and shaft diameters. This compatibility allows you to plug in a gear motor, fasten the chassis, add wheels, and you’re ready to roll.
6. What motors are included in the BO motor collection?
The collection features “BO series” gear motors paired with wheels as part of various kit configurations. For example, you’ll find sets with gear motors rated for low voltage (such as 3-6 V) and moderate RPMs (e.g., 200 RPM), paired with matching wheels (like 65 mm or 69 mm diameter) made for DIY robot cars. These motors offer good torque for their size and make the kits ideal for mobile robotics.
7. Can these wheels and chassis be used for Arduino or Raspberry Pi robots?
Absolutely. The wheels and chassis are great for Arduino or Raspberry Pi-based robot builds. Since the chassis provides the mechanical platform (frame, wheels, motor mount) and the motors operate on hobby voltages, you can mount your Arduino or Pi along with sensors and motor driver boards. From line followers to obstacle-avoiders, the setup works well for educational and hobby robotics.
8. What is the recommended weight limit for these chassis kits?
While exact weight limits may vary by kit, a general guideline is to keep the total robot weight modest, often under a few hundred grams, to ensure the motors can move the chassis efficiently without stalling or stressing components. If you add heavy sensors, batteries, or metal plates, pick a chassis with robust construction (metal frames rather than thin plastic) and motors with higher torque before exceeding typical hobby limits.
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