In general, for oil bath lubrication where the operating temperature is 50°C (120°F) or less, oil should be replaced once a year. When the operating temperature is between 80°C – 100°C (176°F – 212°F), oil should be replaced at least every three months.
Can you over grease a motor?
Overgreasing can lead to high operating temperatures, collapsed seals and in the case of greased electric motors, energy loss and failures. … This leads to rapid oxidation (chemical degradation) of the grease as well as an accelerated rate of oil bleed, which is a separation of the oil from the thickener.
How often should a 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.
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.
Should you grease an electric motor?
Regularly greasing your electric motor bearing is an important part of electric motor maintenance. When applied correctly, the right grease will protect your electric motor’s bearing against damaging corrosion, reduce wear caused by friction, and act as a seal against contaminants.
How often should electric motors 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.
When should I stop greasing?
You can also avoid over-lubrication by practicing the following measures:
- Stop greasing if you note back pressure that is not normal.
- Check to see that the exhaust ports on a machine are free from debris, including hard crust.
- Slowly pump the lubricant into a machine’s bearings for several seconds.
How much grease is enough?
Rule of Thumb #1: G = DB/10
This is done by pumping a known number of strokes on your grease gun and weighing the discharged grease on a scale. As an example of using this formula, let’s consider a sealed bearing on a 2″ diameter shaft that is 7/8 of an inch wide. (2 x . 825)/10 = 0.16 oz of grease.
Do all bearings have to be lubricated each year?
Some equipment needs all the bearings re-greased every day, some once a week, some every two weeks, and some once a month. In applications such as this, it is often beneficial to completely wash out the bearings once a year, re-pack with new grease, and continue on with the established re-greasing program.
How long does bearing grease last?
“Lubricant deteriorates over time as a result of aging, condensation, and separation of the oil and thickener. For closed bearings – sealed or shielded – that contain the standard domestic grease (GJN), and that are still in their original, unbroken packaging, the recommended shelf life is five years.
Do all motors need grease?
Electric motors require lubricants with specific characteristics. Use of the wrong grease often leads to early electric motor failures. The grease consistency preferred for electric motors is normally NLGI 2 or 3, with a base oil viscosity of 100-150 cSt @ 40°C.
How do you maintain an electric motor?
Top Tips For Maintaining Electric Motors
- Develop a general maintenance and cleaning routine. Every company should have a cleaning routine in place if they don’t already. …
- Check the motor’s lubrication. …
- Regularly inspect the bearings. …
- Reduce or eliminate vibrations. …
- Inspect the rotor and stator. …
- Record your findings.
How do you lubricate an electric motor?
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.
Why do we grease Motors?
Grease lubricates ball and roller bearings in your industrial motors to reduce friction, protect from dirt and debris, and also acts as a coolant by transferring heat from the metal bearings.
How do you put grease in a motor?
The general procedure for greasing is as follows:
- Lock and tag out the electric motor.
- Wipe grease from the pressure fitting, clean dirt, debris and paint around the grease relief plug. …
- Remove the grease relief plug and insert a brush into the grease relief as possible. …
- Add grease per Table 1.
How can I make my electric motor quieter?
Capacitors are usually the most effective way to suppress motor noise, and as such we recommend you always solder at least one capacitor across your motor terminals. Typically you will want to use anywhere from one to three 0.1 µF ceramic capacitors, soldered as close to the motor casing as possible.