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The world of electric vehicles (EVs) and robotics is evolving at a rapid pace. As these technologies become more advanced, the demand for high-performance, reliable, and efficient components grows stronger. One of the most critical—and often overlooked—components in both EVs and robotics is the bearing. The right bearing can make the difference between a smooth, efficient machine and one plagued by breakdowns and inefficiency.

In this comprehensive guide, we’ll walk you through everything you need to know about choosing the right bearing for your EV or robotics project in 2025. We’ll cover the different types of bearings, key selection criteria, and real-world examples. Plus, we’ll highlight some top product recommendations from our bearing collection to help you get started.

Table of Contents

1. Why Bearing Selection Matters in EVs and Robotics
2. Types of Bearings Used in EVs and Robotics
3. Key Factors to Consider When Choosing a Bearing
4. How to Match Bearing Types to Your Application
5. Top Product Recommendations for 2025
6. Installation, Maintenance, and Longevity Tips
7. Frequently Asked Questions
8. Conclusion & Next Steps

1. Why Bearing Selection Matters in EVs and Robotics

Bearings are the unsung heroes of motion systems. In both electric vehicles and robotics, they support rotating parts, reduce friction, and ensure smooth, precise movement. The wrong bearing can lead to:

• Increased energy consumption
• Excessive wear and tear
• Noise and vibration
• Premature failure of critical components

In EVs, bearings are found in motors, gearboxes, wheels, and auxiliary systems. In robotics, they’re essential for joints, actuators, wheels, and end effectors. As these industries push for higher efficiency, longer lifespans, and quieter operation, the importance of choosing the right bearing has never been greater.

2. Types of Bearings Used in EVs and Robotics

Let’s explore the most common bearing types you’ll encounter in EV and robotics projects:

a. Deep Groove Ball Bearings

These are the most widely used bearings due to their versatility and ability to handle both radial and axial loads. They’re ideal for high-speed applications and are commonly found in motors and wheels.

Example from our range:

• Ultra High Speed Angular Contact Ball Bearing 95BTR10
• Deep Groove Ball Bearing 6204 (perfect for compact motors and gearboxes)

b. Angular Contact Ball Bearings

These bearings are designed to handle combined loads and are especially useful in applications where high precision and rigidity are required, such as robotic arms and EV drive units.

Featured product:

• Ultra High Speed Angular Contact Ball Bearing 70BTR10
• Angular Contact Ball Bearing 70 Series

c. Cylindrical Roller Bearings

Known for their high radial load capacity, cylindrical roller bearings are often used in gearboxes and heavy-duty drive systems.

Recommended for heavy-duty robotics:

• Cylindrical Roller Bearing NNU4938
• Cylindrical Roller Bearing NN3940

d. Thrust Ball Bearings

These are designed to handle axial loads and are commonly used in applications where components are subjected to high thrust forces, such as robotic joints and EV steering systems.

Explore our selection:

• Thrust Ball Bearing 51200 Series

e. Needle Roller Bearings

Needle roller bearings are compact and can handle high loads, making them ideal for space-constrained applications in robotics and compact EV assemblies.

3. Key Factors to Consider When Choosing a Bearing

Selecting the right bearing isn’t just about picking a type. Here are the most important factors to consider:

1. Load Type and Magnitude

• Radial Load: Force perpendicular to the shaft.
• Axial Load: Force parallel to the shaft.
• Combined Load: Both radial and axial forces.

Tip: Deep groove ball bearings like the 6204 are great for moderate radial and axial loads, while angular contact bearings excel in high combined load scenarios.

2. Speed Requirements

Bearings have maximum speed ratings. High-speed applications, such as EV motors or robotic actuators, require bearings with low friction and high precision.

Example: The Ultra High Speed Angular Contact Ball Bearing 95BTR10 is engineered for extreme speeds.

3. Precision and Rigidity

Robotics and EVs often demand high-precision movement. Angular contact and cylindrical roller bearings are preferred for applications where accuracy and rigidity are critical.

4. Space Constraints

Compact designs require bearings with small cross-sections but high load capacity. Needle roller bearings and slim deep groove ball bearings are ideal here.

5. Environmental Conditions

Consider temperature, humidity, exposure to dust or chemicals, and the need for corrosion resistance. Stainless steel or sealed bearings are recommended for harsh environments.

6. Maintenance and Lubrication

Some bearings are maintenance-free, while others require regular lubrication. For hard-to-reach areas, sealed or pre-lubricated bearings are best.

7. Cost and Availability

Balance performance with budget. Sometimes, a slightly more expensive bearing can save money in the long run by reducing downtime and maintenance.

4. How to Match Bearing Types to Your Application

Let’s look at some common EV and robotics applications and the best bearing choices for each:

a. Electric Motors (EVs & Robotics)

• Recommended: Deep groove ball bearings (6204), angular contact ball bearings (70BTR10)
• Why: High speed, moderate to high radial and axial loads, need for quiet operation.

b. Gearboxes and Transmissions

• Recommended: Cylindrical roller bearings (NNU4938), deep groove ball bearings (6804)
• Why: High radial load capacity, durability, and reliability.

c. Robotic Arms and Joints

• Recommended: Angular contact ball bearings (70 Series), thrust ball bearings (Thrust Ball Bearing Series)
• Why: High precision, ability to handle combined loads, and smooth rotation.

d. Wheels and Drive Systems

• Recommended: Deep groove ball bearings (6807), cylindrical roller bearings (NN3940)
• Why: High load capacity, low rolling resistance, and durability.

e. Compact Actuators and End Effectors

• Recommended: Needle roller bearings, slim deep groove ball bearings (16005)
• Why: Space-saving design, high load capacity.

5. Top Product Recommendations for 2025

Here are some of our top picks for EV and robotics projects in 2025, based on performance, reliability, and customer feedback:

1. Ultra High Speed Angular Contact Ball Bearing 95BTR10

• Best for: High-speed motors and precision robotics
• Why: Exceptional speed rating, low friction, and high rigidity
• View Product

2. Deep Groove Ball Bearing 6204

• Best for: Electric motors, gearboxes, and wheels
• Why: Versatile, reliable, and easy to install
• View Product

3. Cylindrical Roller Bearing NNU4938

• Best for: Heavy-duty gearboxes and drive systems
• Why: High radial load capacity and durability
• View Product

4. Angular Contact Ball Bearing 70 Series

• Best for: Robotic arms and high-precision applications
• Why: Handles combined loads, high precision
• View Product

5. Deep Groove Ball Bearing 6804

• Best for: Compact gearboxes and actuators
• Why: Slim design, high speed, and load capacity
• View Product

6. Thrust Ball Bearing 51200 Series

• Best for: Robotic joints and EV steering systems
• Why: Handles high axial loads, smooth operation
• View Product

7. Deep Groove Ball Bearing 16005

• Best for: Space-constrained actuators and end effectors
• Why: Ultra-slim, reliable, and efficient
• View Product

6. Installation, Maintenance, and Longevity Tips

Proper installation and maintenance are just as important as choosing the right bearing. Here’s how to maximize the lifespan of your bearings:

Installation Tips

• Always use the correct tools to avoid damaging the bearing.
• Ensure shafts and housings are clean and free of burrs.
• Align bearings properly to prevent uneven load distribution.
• Avoid excessive force during installation.

Lubrication

• Use the recommended lubricant for your bearing type and application.
• For sealed bearings, check manufacturer guidelines for relubrication intervals.
• Over-lubrication can be as harmful as under-lubrication.

Regular Inspection

• Check for signs of wear, noise, or vibration.
• Replace bearings at the first sign of damage to prevent further issues.

Environmental Protection

• Use seals or shields to protect bearings from dust, moisture, and chemicals.
• Store bearings in a clean, dry environment before installation.

7. Frequently Asked Questions

Q: How do I know which bearing type is best for my project?
A: Start by analyzing your application’s load, speed, space, and environmental requirements. Use this guide and consult with a bearing specialist if needed.

Q: Can I use the same bearing for both EV and robotics applications?
A: Some bearings, like deep groove ball bearings, are versatile enough for both. However, always match the bearing to the specific demands of your application.

Q: How important is bearing precision in robotics?
A: Extremely important. High-precision bearings ensure smooth, accurate movement, which is critical for robotic arms and actuators.

Q: Where can I find more information or get help with selection?
A: Contact our team for personalized advice, or browse our full bearing collection.

8. Conclusion & Next Steps

Choosing the right bearing for your EV or robotics project in 2025 is a decision that impacts performance, reliability, and long-term success. By understanding the different bearing types, key selection factors, and matching products to your application, you can ensure your project runs smoothly and efficiently.

Ready to upgrade your EV or robotics project? Browse our full range of bearings or contact our experts for tailored recommendations. Investing in the right bearing today means fewer headaches and better results tomorrow.

This article is for informational purposes only. For specific product recommendations, consult with a qualified engineer or bearing specialist. For more technical resources, visit the American Bearing Manufacturers Association (ABMA).