Fan Motor Bearing Grease

Motor casing full of grease if the grease cavity is overfilled and high pressure from the grease gun is applied the excess grease can find its way between the shaft and the inner bearing cap and press into the inside of the motor.

Fan motor bearing grease.

Grease compatibility with some exceptions greases with different types of thickeners should be considered incompatible with each other. Stated as a number of hours l10 life indicates the life expectancy with 90 confidence that the bearings will meet the expectation. You want to find 10 15 or 20 weight non detergent motor oil. Electric motor bearing grease should soften no more than 1 to 1 5 nlgi grades in this test.

Ntn bearing 608zzc3 em single row micro ball bearing electric motor quality c3 clearance steel cage 8 mm bore id 22 mm od 7 mm width double shielded 3 3 out of 5 stars 4 10 46 10. Mineral oil based grease derived from petroleum is more economical than synthetic oil. Purchasing an electric fan motor lubricant can be more difficult that some people realize because there are many factors that you have to consider. While some grease is moved into the motor housing due to couetti flow the amount is considerably less than if the motor is operating.

Nlgi 2 is about the consistency of peanut butter. The increased friction and pressure from too much grease raises the temperature inside the bearing. Nlgi viscosity grade is a rating of a grease s consistency. Able to handle light to moderate loads at high speeds this grease is often used on electric motor bearings for fans pumps and dryers.

Nlgi 3 is about the consistency of vegetable shortening. Fan bearing maintenance helps increase longevity and potential to reach the fan bearing s full l10 life. Electric motor bearing greasing requires the motor to be de energized during the procedure. Using the wrong type can clog up the bearings and ruin the fan oftentimes requiring a full replacement.

Excess heat could decrease the effectiveness of the lubricant causing the oil to separate from the thickener. This allows the grease to cover the end windings of the insulation system and can cause both winding insulation. The result is reduced risk of excess grease entering the electric motor stator due to couetti flow and. The bearing now has to work much harder to push the rolling elements through a mud bog of grease.

An electric motor bearing grease that softens more than that may leak out of the bearing with age. The best product for one situation is not necessarily the best product for another even when that product is considered to be the best all around product on the market.