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How Often Should You Regrease Your Foredom Flex Shaft?

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How Often Should You Regrease Your Foredom Flex Shaft?

Proper maintenance of your Foredom flex shaft is key to ensuring its longevity, efficiency, and optimal performance. One critical aspect of maintenance is regreasing the shaft. But how often should you do it? Let’s dive in.
Our Recommendations

Foredom recommends regreasing your flex shaft every 50 hours of use or approximately every 3 to 6 months, depending on how frequently you use it. If you’re a heavy user who relies on the flex shaft daily, you may need to regrease more often—potentially every 30 to 40 hours of operation.

Why Regular Regreasing Is Important

The flex shaft’s internal cable generates friction as it rotates inside the sheath. Proper lubrication minimizes:

  • Heat Build-Up: Reduces the risk of overheating, which can damage both the shaft and sheath.
  • Wear and Tear: Prolongs the life of the cable and sheath by reducing friction.
  • Noise and Vibration: Ensures smoother operation with less noise and vibration.
Signs Your Flex Shaft Needs Regreasing

Signs Your Flex Shaft Needs Regreasing
Not sure when to regrease? Watch for these signs:

  • Increased heat in the sheath during operation.
  • Excessive noise or vibration.
  • Sluggish performance or decreased torque.
  • The sheath feels stiff or resistant when flexed.
How to Regrease Your Foredom Flex Shaft

Follow these steps to keep your flex shaft running smoothly:

  1. Disconnect the Power: Always unplug your Foredom before starting any maintenance.
  2. Remove the Shaft from the Sheath: Loosen the set screw on the motor shaft connector and gently slide the inner shaft out of the sheath.
  3. Clean the Shaft: Use a clean, dry cloth to wipe away old grease and debris.
  4. Apply Fresh Grease: Use Foredom’s recommended flex shaft grease. Apply a thin, even layer along the length of the shaft—avoid over-greasing.
  5. Reinsert the Shaft: Slide the shaft back into the sheath, ensuring it moves freely and smoothly.
  6. Reassemble and Test: Reattach the shaft to the motor. Before attaching the handpiece, let the shaft hang into a bucket and run the motor fir 10-20 minutes without a handpiece to drain excess grease. NOTE: getting grease into your handpiece may cause it to run hot. Always disconnect or hang up your handpiece when not in use. 
Additional Tips for Maintenance

Use the Right Grease: Only use the grease recommended by Foredom. Other lubricants may not handle the high-speed conditions of a flex shaft and could cause damage.

Avoid Over-Greasing: Excess grease can build up inside the sheath, causing blockages or attracting debris.

Inspect the Sheath: During regreasing, check the sheath for wear. Replace it if you notice cracks or significant damage. Click here to view shafting details

Final Thoughts

Sticking to a regular regreasing schedule will extend the life of your Foredom flex shaft and maintain its performance. For hobbyists, a 3-to-6-month schedule might suffice, while professional users should consider more frequent maintenance.

With a well-lubricated flex shaft, you’ll enjoy smooth, efficient operation every time you use your Foredom.

Click here to view Flex Shaft Maintenance Items

Read more: Is My Shaft Broken? 

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