How to Lubricate a Treadmill (and How Often)
A few minutes of lubrication can add years to your treadmill's motor and belt. Here's exactly how to do it.
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1. Why Lubrication Matters
Friction between the belt and deck makes the motor work harder, heats up the electronics and wears the belt. A properly lubricated treadmill runs quieter, smoother and lasts longer.
2. Which Treadmill Lubricant to Use
| Type | Used On | Notes |
|---|---|---|
| 100% silicone | Most home treadmills | Most common; use a non-aerosol bottle with an applicator |
| Wax | Some commercial treadmills | Only if your manual specifies it |
| Maintenance-free decks | Some models | Pre-waxed; don't add lube |
3. How to Lubricate a Treadmill
- Unplug the treadmill
- Loosen the belt slightly if needed to lift the edge
- Lift one side of the belt and apply silicone in a thin line down the center of the deck
- Repeat on the other side
- Plug in and walk at 2 to 3 mph for 3 to 5 minutes to spread it
- Re-tighten the belt if you loosened it
4. How Often to Lubricate
- Light home use: every 3 to 6 months or every 150 miles
- Heavy home use: every 1 to 3 months
- Always follow the manufacturer's schedule
- Check when the belt feels dry or the motor sounds strained
5. Signs Your Treadmill Needs Lubrication
A belt that feels dry or sticky to the touch underneath, squeaking or grinding sounds, a motor that strains or slows under load and a belt that hesitates with each step are all signs it's time to lubricate. Some treadmills display a maintenance reminder on the console.
Check by lifting the belt and running your hand along the deck. It should feel slightly slick. If it feels dry, apply lubricant.
6. Mistakes to Avoid
Avoid over-lubricating, which can attract dirt and cause the belt to slip. Never use WD-40, household oils or grease, which can damage the belt and deck. Don't lubricate maintenance-free decks unless the manual says so. Wipe up any excess lubricant on the belt surface.
7. Lubrication for Commercial Treadmills
Commercial treadmills see far more use, so many need lubrication or deck inspection more frequently than home models. Some use wax-impregnated decks or require specific lubricants. Gyms should follow the manufacturer's preventive maintenance schedule and keep a log of each service. Regular lubrication reduces motor load, which lowers energy use and extends motor and belt life. Ask your service technician to check belt and deck wear at the same time.
8. Final Tip
Mark your lubrication dates on a calendar or in your phone so you never miss a service.
9. Storing Lubricant
Keep the lubricant bottle sealed in a cool, dry place so it's ready for the next service.
Final Thoughts
To lubricate a treadmill, unplug it, apply 100 percent silicone under the belt along the deck center and walk it in for a few minutes. Do it every 3 to 6 months for home use, and always check your manual first.
Frequently Asked Questions
- Can I use WD-40 on my treadmill?
- No. Use 100 percent silicone or the lubricant your manufacturer recommends.
- What happens if you don't lubricate a treadmill?
- Friction increases, the motor works harder and the belt and deck wear out faster.
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