Grease is a semi-solid lubricating substance made up of base oil, material, and additives that are commonly used to lubricate electrical motor bearings. The proper greasing of the bearings will reduce friction and prevent every day wear and tear. It will also protect against corrosion and act as a covering to keep dirt, filth, waste, and other part pollutants out.

The most important factor impacting motor bearing lubrication is selecting the correct consistency of grease. Once the selection of an appropriate consistency and type of grease is done, then the second job is to ensure that the proper amount of lubricating material is added to ensure trouble-free grease lubrication. Any problem that affects grease’s ability might hurt the ability to provide effective lubrication. This will result in lubrication failure, and damage the machine.

Excessive mechanical work, low and high temperatures, thermal-oxidative degradation of material and grease, as well as water intrusion and various contaminations, may impact the quality of grease which can further impact its lubrication and smooth performance of machinery. Thus, it is imperative to get the best quality grease from the right supplier. The supplier should know your requirements and provide you with the best product.

Just like Bisley International that has serviced the grease industry for 65 years. They are one of the best Lithium Hydroxide and molybdenum disulphide grease suppliers in entire North America. Their office is located in Houston Texas, but they service entire North America. There is a wide range of industries they handle are agrichemicals, ceramics and refractories, water treatment, aluminium, welding, plastic, construction and building materials.

How to Choose the Right Grease

Base Oil

Each lubricator’s foundation and price are represented by base oil, which defines the performance of the grease. The three basic types of base oils are –

  • Minerals
  • Synthetic
  • Vegetable oils

Artificial oils are regarded to provide the best results in terms of protection, performance, reasonable shear stability, and temperature and weather resistance.


Additives are used to improve the quality of grease, which also increases its performance. Some of the common additives are –

  • Extreme pressure additives
  • Rust and corrosion inhibitors
  • Oxidation
  • Polymers designed to boost adhesion
  • Wear and tear protection additives
  • Insoluble solids


Thickeners are known to change the bonding strength of all grease, thus increasing its efficiency. Commonly used thickeners are

  • Simple and sophisticated soaps
  • Supported metal
  •  Calcium
  • Aluminium
  • Sodium
  • Ba compounds


The National Lubricating Grease Institute (NLGI) defines consistency as a quality that determines the degree of softness or hardness of grease. Grease has its NLGI range, which ranges from 000 to 6. These NLGI grades are then used to categorise the consistency of different grease.

  • NLGI grade 000 grease is completely fluid
  • NLGI grade zero greases are described as extremely soft
  • NLGI one grease is soft
  • NLGI two greases are conventional
  • NLGI three greases are firm
  • NLGI vi grease is described as quite difficult


The viscosity of grease determines its capacity to stay stable and provide efficient friction protection. When grease is exposed to significant or slow loads, higher viscosity gives more stability, but lower viscosity is better for high-speed applications.

Each substance has its own set of properties. Consider all aspects before making a purchasing decision. Remember that the best grease for you is one that meets all of your requirement.