Specialty greases are specially formulated for special applications when normal lubricants may not be so suitable. They provide unique performance characteristics, such as resistance against extreme temperatures, water-washout, or protection against high loads. Here is a guide on how to use specialty greases effectively
1. Select the Right Specialty Grease
Temperature Resistance: Depending on the operating environment, special greases should be selected for high or low-temperature applications.
Water Resistance: The grease should be water-resistant or waterproof (marine and underwater applications) if moisture can come into contact with the equipment being lubricated.
Extreme pressure (EP) greases are necessary when heavy loads or shocks are applied to the machinery.
Food-grade greases are to be selected if the grease will have contact with food or pharmaceutical products.
Silicone or graphite-400 greases are used in applications resistant to high temperature or chemical exposure.
When the equipment is in corrosive environments, select a grease that helps protect against corrosion.
2. Application
Clean the Surface: The surface where grease is applied should be clean, dry, and free from dust or debris. Contaminants can interfere with the grease’s performance.
Correct Amount: Too much grease produces friction against a machine and results in wastage, while too little grease leads to inadequate lubrication. Refer to the manufacturer for specifications with regard to how much grease should be applied properly.
Use the Correct Tools: Apply with right applicators-whether a grease gun, brush, or manual application-to ensure proper placement of grease to the correct parts.
3. Frequency of Application
Maintenance Schedule: Specialty greases often specify how frequently they should be applied. Inspection and maintenance must be performed regularly, especially under high load, high temperature, or demanding environment situations.
Lubrication Intervals: Various types of machinery or environments may require different re-lubrication frequencies. For example, bearings that run at high speeds may require grease replenishment more frequently than components that run at low speeds with light loading.
4. Performance Monitoring
Check for Excessive Wear and Leaking: After lubrication of a component with specialized grease, the machine should be examined on a regular basis for excessive wear or leaking. The grease should stay in place with no breakdown.
Temperature Monitoring: Where high-temperature grease is used, ambient temperature should be monitored to ensure it is neither breaking down nor dead due to overheating.
5. Storage and Handling
Grease should be properly stored: Specialty greases should be kept in a place that is cool and dry and is not exposed to sunlight, heat, and moisture in a way that is detrimental to their integrity.
Shelf Life: Always check the shelf life. An expired product tends to lose effectiveness.
6. Disposal of Used Grease
Proper Disposal: Used grease, especially those with contaminants or chemicals, should be disposed of according to local environmental regulations. Disposal into drains or waterways is strictly prohibited.
