What kind of grease is used in electric motors?

A NLGI 2 grade grease is the most commonly used in electric motor applications. ASTM D 3336 oxidation life. require a grease with an EP additive. Dropping Point: The dropping point gives an indication of the temperature at which the grease will melt or the oil will separate from the thickener.

How do you grease an electric motor?

Electric Motor Bearing Lubrication Procedure

  1. Ensure the grease gun contains the appropriate lubricant.
  2. Clean the areas around the relief and fill fittings.
  3. Remove the grease relief valve or drain plug.
  4. Grease the bearing with a calculated amount of grease. …
  5. Watch for grease coming out the relief port.

Do electric 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.

Which grease used in motor bearing?

SKF LGHQ 2 is a mineral oil based grease using a di-urea thickener. It is suitable for electric motors and similar applications.

Electric motor bearing grease.

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Designation LGHQ 2/(pack size)
Dropping point DIN ISO 2176 >260 °C (>500 °F)
Base oil viscosity 40 °C, mm²/s 110
100 °C, mm²/s 12
Penetration DIN ISO 2137 60 strokes, 101 mm 265 – 295

How much grease do you put in an electric motor?

Determine Grease Volume

The average value is approximately 18 shots per ounce for most manual guns, but grease gun output can vary by a factor of 10, so be sure to calibrate each gun.

Why use polyurea grease in electric motors?

It has very low oil separation, so it will not bleed into the motor’s windings. … The LE grease also maintains pumpability at low temperatures, making it suitable for cold environments and for use with long feed lines to remote application sites.

How often should you grease a electric motor?

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.

What is Polyrex EM grease?

Super-premium Mobil Polyrex™ EM Series greases are specially formulated for electric-motor bearings. The advanced thickener formulation and proprietary manufacturing techniques provide improved bearing performance and protection for long electric motor life.

What are the different types of grease?

Types of grease and their uses

  • Calcium grease. Calcium grease is one of the first greases that was manufactured for general use. …
  • Lithium grease. …
  • Aluminium complex grease. …
  • Barium complex grease. …
  • Bentone (clay) grease. …
  • Polyurea grease. …
  • Sodium grease. …
  • Base oil.
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Do Electric motors use motor oil?

An electric car doesn’t require motor oil, as it uses an electric motor instead of an internal combustion engine. Traditional gas vehicles need oil to lubricate several moving pieces in their combustion engines.

What is bearing grease?

Lubricating grease for rolling element bearings consists of thickener, oil and selected additives to improve desired properties. The actual lubricant for a rolling bearing is oil, which can be a mineral oil, fully synthetic or a blend of the two.

What is EP2 grease?

Print. Valvoline Lithium EP2 Grease is a premium quality lithium soap grease containing extreme pressure additives, formulated to provide outstanding mechanical stability & EP characteristics under severe operating conditions.

Can you put grease on electrical connections?

Dielectric grease can also be applied to the metal parts of virtually any electrical connection that will be exposed to the elements to serve as a sealant that protects the connection from contamination and corrosion.

What happens if you over grease an electric motor?

Overgreasing can lead to high operating temperatures, collapsed seals and in the case of greased electric motors, energy loss and failures. … This can result in accelerated wear of the rolling elements and then component failure. Seal damage is another negative side effect of overgreasing.

What is silicone grease made of?

Silicone grease, sometimes called dielectric grease, is a waterproof grease made by combining a silicone oil with a thickener. Most commonly, the silicone oil is polydimethylsiloxane (PDMS) and the thickener is amorphous fumed silica.

What is polyurea grease?

Polyurea grease is a non-soap thickened grease that is becoming widely accepted as the best option for long life applications such as electric motor bearings, automotive and off highway constant velocity joints and seal for life applications.

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