Raceway Damage in CNC Machine Tool Bearings: An Easy-to-Understand Guide

What is Raceway Damage?

Imagine the tread on your bicycle tire wearing down from carrying heavy loads or encountering sharp rocks. Similarly, raceway damage in bearings occurs when the "running track" inside the bearing—where moving parts interact—develops cracks, pits, or flaking due to wear and tear. This results in machine vibrations, noise, and diminished machining accuracy.

4 Types of Raceway Damage (With Simple Comparisons)

(1) Pitting Flaking (Like Tire Potholes)

    Small holes form on the bearing surface and grow into larger patches.

(2) Scale-like Flaking (Like Peeling Paint)

   Tiny cracks spread in lines, resembling fish scales.

(3) Large Area Flaking (Like Wall Cracks)

   Big chunks of material break off, creating visible holes.

(4) Early Cracking (Like Hairline Fractures)

   Tiny surface cracks that warn of impending failure.

5 Common Causes & Simple Fixes

(1) Overloading Your Machine

    Example: Asking a bicycle to carry a car’s weight.

    Effect: Causes permanent deformation, reducing bearing life by up to 50%.

(2) Poor Lubrication

    Analogy: Not changing engine oil in a car.

    Risk: Metal parts grind against each other, causing wear rates to increase by 300%.

(3) Incorrect Installation

   Common Mistake: Mounting wheels unevenly on a bike.

   Data: Incorrect installation can shorten lifespan by 70%.

(4) Long-Term Wear

    Similar To: Worn-out running shoes losing cushioning over time.

(5) Dirty Environments

    Real-Life Example: Sand in your car engine damages moving parts.

3 Simple Prevention Tips

(1)  Immediate Actions

• Stop the machine immediately if you hear grinding noises.
• Take monthly photos to track changes in bearing condition.

(2)  Daily Maintenance

• Lubrication: Check oil levels monthly using manufacturer guidelines. Use recommended grease, similar to using the correct engine oil.
• Proper Installation: Always hire trained technicians who use laser tools for precision.
• Clean Workspace: Add dust covers to block 90% of contaminants.

(3) Long-Term Solutions

• Upgrade to ceramic bearings, which last 30-50% longer.
• Install vibration sensors for early warnings of potential issues.

Take Action Now

• Call us +86 13034628052
• Mail us:Sherrydong1981@gmail.com

By understanding and addressing the common causes of raceway damage, you can significantly extend the life of your CNC machine bearings and improve overall machining performance. Contact us today to learn more about how we can help maintain your equipment!