Best Practices for Installing Bearings and Adjusting After Installation

Proper installation and care of bearings are very important. They help your machines work better and last longer. Follow these simple steps to avoid problems and keep everything running smoothly.

1. How to Install and Remove Bearings

• Don’t hit the bearing directly – Use tools like sleeves or presses to push evenly.

• Heat the bearing if it’s a tight fit – Heat it in oil to about 80–90°C (not over 100°C) so it fits easier without damaging it.

• To remove a bearing – If it’s stuck, gently heat the inner ring with hot oil (around 120–150°C), then use a puller to take it off.

2. Choosing the Right Bearing Clearance

Bearings come with different levels of space inside:

• Normal clearance (C0) – Good for most normal jobs.
• Tight clearance (C2) – Used for high-precision machines like CNC spindles.
• Loose clearance (C3/C4) – Better for high speed, heavy load, or high temperature jobs.

After installation, the space inside gets smaller because of pressure and fit.

3. Sealing and Cooling

• Use good seals – Replace old seals with better ones that block dust and dirt but still let heat escape.
• Keep bearings cool – For sealed bearings, add cooling systems like water jackets or fans. Keep lubrication below 80°C.

4. Lubrication Tips

Use the right amount of grease:

• Under 1,500 RPM: Fill 2/3 of the space.
• Between 1,500 and 3,000 RPM: Fill 1/3.
• Over 3,000 RPM: Use oil-mist lubrication.

Choose the right grease – In hot or tough conditions, use high-temperature or synthetic grease.

5. Keep Bearings Clean

• Use clean tools and cloths – Don’t let dirt or fibers get inside.
• Install in clean areas – Especially for precision machines, use a clean room (ISO Class 7 or better).

Use magnetic seals – These catch metal particles in dirty environments.

6. Maintenance Tips

Check regularly:

• Watch the temperature – if it rises more than 15°C, there may be a problem.
• Check vibration – replace the bearing if shaking is too strong (over 5g acceleration).

Add grease when needed – Every 500–1,000 hours, depending on how hard the machine works.

By following these simple tips, you can make your bearings last 50% to 200% longer, reduce breakdowns, and make your machines run better.

For help or advice, feel free to contact our team anytime!