Ask the Expert: How Do I Select the Right Food-Grade Lubricant?

Food-grade lubricant selection is a vital part of successful food and beverage manufacturing. Though it may seem trivial, choosing the wrong lubricant in this setting can result in detrimental effects on machine health and, more importantly, human health, as the products can become contaminated with harmful chemicals. I got a chance to sit down with Steve Ingram, the Technical Manager at Jet-Lube, to delve into the crucial aspects of choosing suitable food-grade lubricants for your equipment, addressing the unique challenges posed by extreme temperatures and uncovering the essential storage and handling protocols to maintain product integrity. As demands for food safety continue to rise, understanding the intricacies of food-grade lubricants is paramount for ensuring the seamless operation of machinery in food processing plants.

Q: What are the key considerations when selecting a food-grade lubricant for industrial applications?

A: Firstly, ensure that the lubricant meets the relevant food safety regulations and standards in your region, such as those set by the FDA or the European Union. Look for lubricants that are explicitly labeled as "food-grade" or meet designations like H1 (incidental food contact) or H3 (food-grade solvents). Secondly, prioritize lubricants that are non-toxic, odorless, and tasteless to avoid any potential contamination of the food product. And finally, consider the specific application requirements and choose a lubricant suitable for the intended use. Different food processing equipment may require other lubricant properties, such as high or low-temperature resistance, water resistance, or compatibility with certain materials like rubber or plastics.

Q: Can you explain the importance of lubricant compatibility with different food processing equipment materials, such as plastics, metals, and seals?

A: Incompatibility can result in equipment malfunction, increased friction, and premature wear, adversely affecting performance and efficiency. For example, some lubricants may be incompatible with certain plastics, causing them to swell, soften, or crack. Incompatible lubricants can also corrode metals or deteriorate seals, leading to leaks or contamination risks. Choosing a lubricant that is compatible with the specific materials used in the equipment helps to maintain the integrity and longevity of the equipment.

Q: What are the common challenges or issues faced when using food-grade lubricants in high-temperature or extreme cold environments?

A: In high-temperature environments, food-grade lubricants may experience thermal degradation, oxidation, and volatility, leading to reduced lubricating properties and increased friction. Extreme cold conditions can cause viscosity changes and solidification, hindering lubricant flow and effectiveness. To address these challenges, use synthetic lubricants for high-temperature applications and low-temperature formulations for extreme cold. Regular monitoring and maintenance are essential in high-temperature environments, while preheating equipment can aid lubricant flow in extreme cold.

Q: Are there specific lubricants or lubrication techniques recommended for applications involving food conveyors, mixers, or other high-speed equipment?

A: Synthetic food-grade lubricants are often preferred for high-speed applications due to their thermal stability, oxidation resistance, and high film strength, providing effective lubrication under demanding conditions. High-speed greases, specially formulated for food-grade applications, are designed to reduce friction, wear, and heat generation in fast-moving machinery.

To achieve precise lubrication in high-speed equipment, automatic lubrication systems, such as centralized lubrication or spray systems, are recommended. These systems ensure consistent and controlled lubricant application, minimizing the risk of over-lubrication or under-lubrication. Following manufacturer guidelines for the correct amount and frequency of lubricant application is essential, as over-lubrication can cause excessive heat generation and equipment damage. At the same time, under-lubrication can lead to increased friction and wear.

Jet-Lube's high-performance food-grade line is highly recommended for industrial applications where lubricants may have incidental contact with edible products. 

For food conveyors and mixers, using food-grade lubricants designed specifically for chain applications is essential. These lubricants offer good adhesion properties and resistance to water washout, protecting chains from wear and corrosion. Additionally, regular cleaning and inspection of seals and gaskets help maintain a hygienic environment and prevent contamination of the food product.

Q: What are the best practices for storing and handling food-grade lubricants to ensure their effectiveness and prevent contamination in food production environments?

A: Regarding food-grade lubricants, proper storage, and handling are critical to maintaining product integrity and ensuring the safety of food processing equipment and products. During handling, preventing contamination is crucial, and this can be achieved by avoiding the introduction of foreign substances into lubricant containers and using dedicated tools for dispensing lubricants to prevent cross-contamination. Clear labeling of lubricant containers helps to prevent mix-ups and ensures easy identification of vital information such as the lubricant type and expiry date.

OilSafe Bulk System effectively separates food-grade from non-food-grade lubricants to avoid potential cross-contamination.

When storing food-grade lubricants, segregation from non-food-grade lubricants, chemicals, and cleaning agents is necessary to avoid accidental mix-ups and contamination. Temperature control is vital, and maintaining storage temperatures within the range recommended by the lubricant manufacturer is crucial to preserving lubricant performance and stability. Additionally, regularly monitoring shelf life and implementing a first-in, first-out system for lubricants helps ensure that the oldest lubricants are used first and expired lubricants are appropriately discarded.

Bottom Line

Proper food-grade lubricant selection, storage, and handling are vital to a successful food & beverage processing facility. With the right lubricant, you not only protect your equipment from failure but also avoid contaminating the product with chemicals that alter its safety and quality. Just as important is lubricant storage and handling—by avoiding mix ups and cross contamination with non-food-grade lubricants, you effectively comply with regulations and avoid costly mistakes. For more information on food-grade lubricant selection, visit https://www.jetlube.com/products/food-grade-products.

About Steve Ingram

I began my journey in microbiology as an intern at a lab. After completing my internship, I joined the lab as a full-time employee. Later, I explored a position at Kraft Foods before venturing into the realm of industrial chemical coatings. Following a merger in the coatings industry, I returned to the food sector. Subsequently, an exciting opportunity arose with a grease and lubricant manufacturer. I've now been with Jet-Lube for over five years, starting as a QC Technician and later moving to the R&D department as a Chemist. Over time, I advanced to become the lead R&D Chemist and eventually took on the role of Technical Manager for Jet-Lube.