The Essential Guide to Grease for Machinery: Keeping Your Equipment Running Smoothly

Maintaining machinery is crucial for ensuring optimal performance and longevity. One of the most important aspects of this maintenance is proper lubrication. Grease plays a vital role in reducing friction, preventing wear, and protecting against corrosion. In this blog post, we'll explore the different types of grease, their specific uses, and why certain greases are necessary for high-temperature, high-pressure, or waterproof applications. We'll also delve into NLGI ratings, discuss greasing systems, and highlight our range of grease guns and dispensing equipment from Alemlube and STM.

Understanding Different Types of Grease

Grease is essentially a lubricant that combines a fluid lubricant (usually oil) with a thickener and various additives to enhance performance. The primary types of grease include:

  1. Lithium Grease: Known for its versatility, lithium grease is suitable for a wide range of applications. It's stable at high temperatures and offers excellent water resistance and mechanical stability.
  2. Calcium Grease: Often used in applications requiring good water resistance, calcium grease is ideal for marine environments and other settings where moisture is prevalent.
  3. Polyurea Grease: This grease excels in high-temperature applications and provides excellent oxidation stability, making it suitable for electric motors and other high-heat environments.
  4. Molybdenum Disulfide (Moly) Grease: Containing solid lubricants, moly grease is ideal for heavy-duty applications where high pressure and shock loading occur, such as in construction and mining equipment.
  5. Silicone Grease: Often used in applications requiring excellent water resistance and thermal stability, silicone grease is ideal for rubber and plastic lubrication.

Why Use Specialized Grease?

Different greases are formulated to meet specific requirements:

  • High-Temperature Grease: Formulated to withstand extreme heat without breaking down, high-temperature grease is essential for applications like bearings in industrial ovens or engines.
  • High-Pressure Grease: Designed to handle heavy loads and high pressures, this grease is perfect for heavy machinery in construction and mining.
  • Waterproof Grease: Essential for marine and outdoor applications, waterproof grease prevents water ingress that can lead to corrosion and wear.

Understanding NLGI Ratings

The National Lubricating Grease Institute (NLGI) rating system classifies grease based on its consistency. The scale ranges from 000 (fluid) to 6 (very hard). Common NLGI grades include:

  • NLGI 0 and 1: Semi-fluid greases used in centralized lubrication systems and cold environments.
  • NLGI 2: The most commonly used grease consistency, suitable for a wide range of applications, including automotive and industrial machinery.
  • NLGI 3: Thicker grease used in high-load applications, such as wheel bearings.

Understanding NLGI ratings helps in selecting the right grease for specific greasing systems, especially for automatic lubrication systems that require specific viscosities to function correctly.

Importance of Greasing Machinery

Proper greasing is vital for:

  • Reducing Friction and Wear: Grease reduces the friction between moving parts, preventing wear and tear.
  • Protecting Against Corrosion: Grease acts as a barrier, protecting metal surfaces from moisture and corrosive elements.
  • Enhancing Equipment Longevity: Regular greasing ensures that machinery runs smoothly, reducing the risk of breakdowns and extending its lifespan.

Grease Guns and Dispensing Equipment

At Filter Discounters, we offer a range of grease guns and dispensing equipment from Alemlube and STM. Our products include:

  • Manual Grease Guns: Ideal for small-scale applications, offering precision and control.
  • Pneumatic Grease Guns: Suitable for larger applications, providing efficient and consistent greasing.
  • Automatic Lubrication Systems: Perfect for continuous and precise lubrication, reducing maintenance time and increasing efficiency.

Integrating Greasing into Operating Procedures

Incorporating greasing into regular maintenance procedures is crucial for the smooth operation of machinery. This includes:

  • Scheduled Greasing: Establish regular greasing schedules to ensure all components are adequately lubricated.
  • Training Staff: Ensure that all operators are trained in the correct use of greasing equipment and the importance of regular lubrication.
  • Using the Right Tools: Utilize appropriate grease guns and dispensing equipment to ensure efficient and effective greasing.


Grease is a critical component in machinery maintenance, providing essential lubrication that reduces friction, protects against corrosion, and enhances equipment longevity. By understanding the different types of grease, their uses, and the importance of proper greasing, you can ensure your machinery operates efficiently and reliably. At Filter Discounters, we provide a range of high-quality grease products and dispensing equipment to meet all your lubrication needs. Contact us today to learn more about our products and how we can help keep your machinery running smoothly.

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