For an electric motor that is running 24/7/365, itmay only need to have grease reapplied once or twice a year. The standard grease for most all electric motor manufacturers is Polyrex EM.
How often should you grease Baldor motors?
Table 3 specifies 9500 hours as the recommended lubrication interval for frame sizes 254 to 286 (see nameplate), given standard service conditions.
How often should I grease my electric motor?
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.
Are you supposed to grease electric motors?
Most electric motors are designed with grease-lubricated, antifriction, rolling-element bearings. … Grease is the lifeblood of these bearings because it provides an oil film that prevents the harsh metal-to-metal contact between the rotating element and races.
Do Baldor motors come pre greased?
* Lubrication interval for 6313 or 6314 bearings that are used in 360 through 5000 frame, 2 pole motors. … Lubricant Baldor motors are pregreased, normally with Polyrex EM (Exxon Mobil). If other greases are preferred, check with a local Baldor Service Center for recommendations.
Can you over grease bearings?
When it comes to regreasing bearings, more is not always the better option and actually can be a costly mistake. … 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.
How much grease do you put in an electric motor?
The following may be used as a guide to filling the housing with grease. 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 often should bearings 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 often should Pumps be greased?
Using a mineral oil would generally require oil to be changed every six to 12 months. With a clean, premium-grade synthetic lubricant, you would typically extend oil change intervals to at least 24 months.
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.
What happens if you over grease an electric motor?
Over lubrication can cause the grease or oil to get into the windings. This will cause the insulation to deteriorate around the winding, resulting in arcing and shorting inside the motor to the case. Over lubricaiton will also cause excessive heat and wear on the rotor and stator.
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.
Should sealed bearings be greased?
Sealed bearings are generally only used for lower speed motors, 75 hp and under, and have an anticipated life span of only three years. These types of bearings fall under the “Lubricated for Life” designation and do not require regreasing.
Do Baldor motors have sealed bearings?
Baldor motors do not require any lubrication because they are sealed bearings.
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.
How many ounces of grease are in a pump?
Answer: Generally, a shot of grease means one stroke from the grease gun. However, the output, or amount of lubricant dispensed from a grease gun depends on the model. Grease guns deliver widely varying amounts of grease (typically 0.1 ounce or 2 to 3 grams).