Electric Motor Gearbox Grease

Among other factors motor and gearbox lubrication programs require understanding and a controlled lubrication approach.

Electric motor gearbox grease.

Viscosity oil viscosity should be appropriate for the load and speed of the application at operating tempera ture. Some manufacturers don t recommend mixing one brand of polyurea with another. 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 2 is about the consistency of peanut butter.

Nlgi 3 is about the consistency of vegetable shortening. When a driven component is required to operate at a speed different than that of the attached motor driver a designer can choose from two basic power takeoff speed reduction increaser methods. A polyurea based grease is an excellent grease for electric motors. Nlgi viscosity grade is a rating of a grease s consistency.

Wipe grease from the pressure fitting clean dirt debris and paint around the grease relief plug. However this thickener is incompatible with most other thickeners. This will remove any hardened grease. Instruct the motor rebuild shop on what grease to use and make sure the grease type is specified on new motor purchase orders.

Suitable for long term lubrication low friction coefficient good lubricity at low temperatures compatible with plastics and elastomers molykote pg 75 is normally only available in 1000ml tins enough to do over 60 motors we now supply handy 30ml. Mineral oil based grease derived from petroleum is more economical than synthetic oil. Good electric motor grease. Gearbox manufacturers provide recommendations for the type of lubrication to be used and the typical lubrication intervals but the actual gearbox lubrication requirements depend on the environmental conditions the gearbox is exposed to whether it is.

The grease consistency preferred for electric motors is normally nlgi 2 or 3 with a base oil viscosity of 100 150 cst 40 c. Lock and tag out the electric motor. Like other types of rotating equipment gearboxes rely on lubrication to reduce friction and provide cooling for optimal operation and life. The typical mineral oil viscosity in an electric motor grease is in the range of 500 to 600 sus at 100 f.

Molykote pg 75 high quality german manufactured grease. The majority of gearboxes tend to be highly loaded and as such require a lot from the lubricant to protect the machine s internal surfaces. This will help to insure maximum protection and component life. Electric motors require lubricants with specific characteristics.

Remove the grease relief plug and insert a brush into the grease relief as possible. This prevents foreign objects from entering the grease cavity. Use of the wrong grease often leads to early electric motor failures.