How often should electric motor bearings be greased?
When the operating temperature is between 80°C – 100°C (176°F – 212°F), oil should be replaced at least every three months. For critical equipment, it is advisable that lubricating oil be analyzed at least every three months to determine when oil replacement is necessary.
How much grease should you add to a motor bearing?
30% to 50% fill — Typically used. For very high speeds the lower limit should be used in order to reduce churning and overheating of the grease. Overpacked bearings tend to overheat, and to overheat even more at higher speeds.
How do you lubricate motor bearings?
Electric Motor Bearing Lubrication Procedure
- Ensure the grease gun contains the appropriate lubricant.
- Clean the areas around the relief and fill fittings.
- Remove the grease relief valve or drain plug.
- Grease the bearing with a calculated amount of grease.
- Watch for grease coming out the relief port.
How often should a sealed bearing be greased?
Using the chart and the formula, the bearing only needs 8 grams of grease every 10,000 hours. If your grease gun delivers around 1.35 grams per stroke, that means the bearing needs 6 strokes every 13 months; you could average it out to a stroke every 8 weeks or so.
What is the best lubricant for an electric motor?
The grease consistency preferred for electric motors is normally NLGI 2 or 3, with a base oil viscosity of 100-150 cSt @ 40°C. Other characteristics to look for include good channeling characteristics, low oil bleed, oxidation resistance, anti-wear additives, and mechanical stability.
Can you oil an electric motor?
Expert advice: When oiling an electric motor, be sure to use oil that’s specifically designed for motors. When oiling an electric motor be sure to use special oil for lubricating electric motors. Other oils could cause excess wear and premature failure.
What happens if you over grease a bearing?
Too much grease volume (overgreasing) in a bearing cavity will cause the rotating bearing elements to begin churning the grease, pushing it out of the way, resulting in energy loss and rising temperatures.
Do you oil an electric motor?
Can you spray wd40 in an electric motor?
Yes, WD-40 is safe to use on electronics. It is used frequently to dry out auto ignition systems as it it non-conductive, displaces water, and lubricates the parts without getting sticky.
Can I use wd40 on fan motor?
[Never put WD-40 in] any electric motor, even if the rotor is stuck from filthy dried-up lubricant! It not only removes any remaining lube, but it can melt coil wires (the lightly-coated copper wires twisted up in electric motors) and cause an electrical short.
Do you need lubrication on a brushless motor?
Light oils may be able to make it easily past the shield of the bearing, but do not have the required lubrication characteristics. Light oils will more than likely not be able to withstand the concentrated heat and friction created within the bearing. The oil would burn off and subject the balls within the bearing to excessive frictional loads.
How do you lubricate an electric motor bearing?
Electric Motor Bearing Lubrication Procedure. Slowly add grease to minimize excessive pressure buildup in the grease cavity. Watch for grease coming out the relief port. If excessive amounts of grease are pumped into the motor and the old, used grease is not being purged, stop and check for hardened grease blocking the relief passage.
How are bearing troubles related to motor failure?
Bearing troubles account for 50 to 65 percent of all electric motor failures, and poor lubrication practices account for most of these bearing troubles. Proper maintenance procedures, planning and the use of the correct lubricant can increase productivity by reducing these bearing troubles and motor failures.
Can a brushless motor be cleaned with WD-40?
If you happen to try and clean the bearing with a product similar to WD-40, the oil can actually pass by the shield and mix with the factory bearing lubrication ultimately leading to possible damage to the bearing. To clean the bearing, my preference is to take a dry cloth and wipe any dirt away from the visible bearing surface.