Food and Beverage Automation Has a Different Rulebook: Here Is What the Terms Actually Mean
Food and beverage manufacturing is one of the largest automation markets in the world, and it operates under rules that most automation professionals from other industries have never encountered. The terminology alone stops people cold. IP69K. NSF H1. EHEDG. FDA 21 CFR 178.3570. These are not marketing labels. They are specific technical and regulatory requirements that determine whether automation equipment can legally operate in a food production environment, and whether it will survive the conditions that environment demands.
Engineers and operations managers moving into food and beverage automation from industrial, automotive, or general manufacturing backgrounds frequently make expensive specification mistakes. They select robots, conveyors, and sensors built for dry factory environments and discover during commissioning or audit that the equipment cannot be properly cleaned, does not carry the right certifications, or harbors bacteria in design features that standard manufacturing accepts without concern. This article explains what the key terms mean, why they exist, and what they require in practice.
Why Food and Beverage Automation Is Fundamentally Different
Standard manufacturing automation optimizes for throughput, precision, and uptime. Food and beverage automation must optimize for all of those things while also surviving daily high-pressure, high-temperature washdown with aggressive cleaning chemicals. Beyond that, every surface must prevent bacterial growth between cleaning cycles. On top of that, regulatory frameworks govern everything from lubricant formulation to cable routing.
The consequence of getting this wrong is not a rejected part or a production delay. It is a contaminated product, a recall, an FDA warning letter, or a plant shutdown. Those outcomes cost far more than the premium food-grade automation carries over standard industrial equipment. Understanding the requirements before specifying equipment is the lowest-cost risk management available.
IP Ratings: What the Numbers Actually Mean
IP stands for Ingress Protection. Every IP rating carries two digits. The first digit rates protection against solid particles on a scale of 0 to 6. The second digit rates protection against water on a scale of 0 to 9.
IP67: Strong in Dry Environments, Insufficient for Washdown
IP67 means the equipment is fully dust-tight and can withstand submersion in water up to one meter deep for 30 minutes. In a dry or lightly damp manufacturing environment, IP67 is a strong protection rating. However, in a food processing environment where daily washdown occurs with high-pressure hoses, IP67 frequently falls short.
IP69K: The Food Processing Standard
IP69K is a fundamentally different test. Equipment carrying this rating has survived high-pressure, high-temperature water jets delivered at close range. More specifically, the test uses water at 176°F sprayed at pressures between 1,160 and 1,450 psi from a nozzle held 4 to 6 inches from the surface. FANUC’s DR-3iB/6 delta robot, demonstrated at Pack Expo 2025, carries IP69K certification and withstands washdown pressures up to 1,500 psi alongside the cleaning chemicals food facilities use daily.
The practical implication is direct. A robot or sensor rated only IP67 can fail internally when a high-pressure washdown hose hits it. Water ingress damages electronics, promotes corrosion, and creates conditions for bacterial growth inside sealed housings with cracked gaskets. In primary processing zones where product contact occurs, IP69K is the minimum credible specification. In secondary packaging zones with less direct water exposure, IP67 may suffice, but verify the specific cleaning protocol before accepting it.
When You Need Both Ratings
IP69K does not guarantee protection against prolonged immersion. In environments where equipment may be temporarily submerged, dual IP67 and IP69K ratings are necessary. Most food-grade robots from FANUC, ABB, Stäubli, Yaskawa, and KUKA now carry both ratings on their washdown-rated models. Confirm both before finalizing any equipment specification for a wet zone.
NSF H1 Lubricants: Why the Grease in a Robot Matters
Every robot gearbox, bearing, and joint requires lubrication. In a standard manufacturing environment, viscosity, temperature range, and load characteristics drive lubricant selection. In a food manufacturing environment, an additional requirement applies: the lubricant must carry certification as safe for incidental food contact.
What NSF H1 Actually Certifies
NSF H1 is the certification that establishes this safety baseline. H1 lubricants contain only ingredients the FDA approves under regulation 21 CFR 178.3570. Every component of the formulation must appear on the FDA’s approved list. NSF International independently verifies the formulation and assigns a registration number that auditors can check in a public database.
“Incidental food contact” is the key phrase. H1 lubricants cover applications where the lubricant might come into minor contact with food during normal operation. Conveyor bearings adjacent to product flow, oven chains passing through cooking zones, and robot joints in a primary processing environment all qualify. The certification acknowledges that zero contact cannot always guarantee itself in high-speed or high-temperature production.
The Maintenance Reality
In practice, food-grade grease requires more frequent service than standard industrial grease. FANUC confirmed at Pack Expo 2025 that their washdown robots using NSF H1 lubricant require gearbox service approximately every 12 months, compared to longer intervals for standard lubricants. This maintenance requirement belongs in every total cost of ownership calculation when specifying food-grade automation.
Using a non-H1 lubricant in a food processing environment creates direct regulatory exposure. FDA inspectors check lubricant documentation during facility audits. An incorrect or unregistered lubricant at a point adjacent to product contact surfaces can generate a warning letter or trigger a corrective action that shuts down the line during resolution.
[IMAGE: NSF H1 certification marking on a food-grade lubricant container alongside a robot gearbox service label showing the annual service interval]
EHEDG: The Design Standard Nobody in Standard Manufacturing Knows Exists
EHEDG stands for the European Hygienic Engineering and Design Group. It publishes design guidelines specifying how food processing equipment must be constructed to enable thorough cleaning and prevent bacterial accumulation. EHEDG is not a regulation in the same way FDA 21 CFR is. Instead, it is a set of engineering standards that define what hygienic design means in practice.
What EHEDG Prohibits
The core EHEDG principles prohibit design features that standard manufacturing accepts without concern. Dead spots where liquid pools and bacteria grow are prohibited. Crevices between components where product residue accumulates and cleaning chemicals cannot reach are prohibited. External cables routed along equipment exteriors create harborage points and make thorough cleaning impossible. Horizontal surfaces that collect debris get minimized or eliminated entirely. Beyond that, welds must be smooth and continuous rather than porous or intermittent.
How EHEDG Changes Robot Design
For automation equipment, EHEDG compliance changes how robots, conveyors, and fixtures are designed at a fundamental level. Stäubli’s HE series robots are built to EHEDG principles. Their housings use smooth stainless-steel surfaces with no exposed fasteners, no external cable bundles, and no geometry that traps liquid. Yaskawa’s HD series meets EHEDG and ISO 14159 standards, which address hygienic design for machinery in food contact environments. KUKA’s HM series carries FDA, EHEDG, and German LFGB compliance for direct food zone applications.
The practical impact for anyone specifying food and beverage automation is clear. A standard industrial robot with external cable harnesses, exposed bolt heads, and complex surface geometry around the wrist cannot become EHEDG compliant simply by cleaning it more frequently. The design itself creates harborage points that no cleaning protocol reliably eliminates. As a result, the equipment must be designed correctly from the start.
FDA 21 CFR: What It Covers and What It Does Not
FDA 21 CFR refers to Title 21 of the Code of Federal Regulations. This large body of regulation covers food, drugs, and cosmetics. In the context of food manufacturing automation, the most relevant sections govern materials that may contact food, substances approved for food-contact applications, and Good Manufacturing Practice requirements for food processing facilities.
Materials and Compliance in Practice
For automation equipment specifically, 21 CFR determines which materials food contact zones can use. Stainless steel grades matter. Plastic compounds in end-of-arm tooling, conveyor belts, and food contact surfaces must use approved formulations. Paint and coatings on robot surfaces must be non-toxic, non-absorbent, and resistant to the cleaning chemicals the facility uses.
FDA compliance does not mean FDA certification. The FDA does not certify robots or conveyors. It establishes material and process requirements that equipment must meet. NSF certifications, EHEDG compliance, and H1 lubricant registration are the mechanisms industry uses to demonstrate that equipment satisfies FDA-relevant requirements in a verifiable, auditable way. When a robot manufacturer states their equipment is FDA compliant, they mean engineers built it with materials and design features that satisfy the applicable 21 CFR requirements.
The Mistake People Make When Entering This Market
The most common and costly mistake is specifying standard industrial automation equipment and assuming that regular cleaning makes it suitable for food production. It does not. The wrong material in a food contact zone, a lubricant without H1 certification adjacent to product, a cable harness that creates a harborage point, or a robot housing with an insufficient IP rating for the actual washdown protocol can each generate a compliance finding that forces replacement of already-installed equipment.
Why the Premium Exists
The premium for food-grade automation is real. A washdown-rated robot with NSF H1 lubrication and IP69K certification costs more than its industrial equivalent. Stainless steel construction costs more than painted carbon steel. EHEDG-compliant conveyor designs cost more than standard conveyor frames. In each case, the premium exists because the engineering is fundamentally different, not because the manufacturer added a label.
Three Questions to Ask Before Specifying
Treat these requirements as design constraints that drive specification from the start rather than as certifications to verify after selection. Ask three questions before any equipment enters a food manufacturing specification.
First, what is the IP rating, and does it match the actual washdown pressure and temperature in the zone where the equipment will operate? Second, does every lubricant in the system carry NSF H1 registration for its specific application point? Third, does the equipment design eliminate dead spots, crevices, and harborage points, or does it create them?
The answers to those three questions determine whether the automation survives an audit and a real production environment. In food and beverage manufacturing, equipment that cannot answer all three correctly does not belong on the floor.