The food and pharmaceutical industries have three rigid requirements for bearings: absolute cleanliness, corrosion resistance, and easy cleaning. Ordinary bearings cannot meet these requirements, making stainless steel bearings the only compliant choice.

Core Pain Points in Food & Pharmaceutical Industry

• Frequent cleaning and disinfection: Hot water, steam, acid and alkali cleaners cause rapid rust and seizure of ordinary bearings.
• Zero tolerance for hygiene compliance: Rust chips and grease leakage contaminate products, triggering recalls and penalties.
• High temperature and humidity environment: High temperature and humidity in baking, sterilization, and cooking equipment accelerate the failure of ordinary bearings.

• Long-term continuous operation: 24-hour production line operation, huge downtime loss, requiring high reliability and long service life of bearings.

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Food & Pharmaceutical Grade Stainless Steel Bearing Solutions

1. Material Selection (Compliance Foundation)
   • 304 stainless steel: General food-grade, good rust resistance, easy cleaning, moderate cost, suitable for most processing and packaging equipment.
   • 316 stainless steel: Stronger acid and alkali resistance, suitable for high-corrosion working conditions such as dairy products, sauces, chemical pharmaceuticals.
   • 440C stainless steel: High hardness and wear resistance, suitable for heavy-duty transmission of high-speed filling, cutting, and grinding equipment.
2. Sealing Scheme (Key to Anti-Fouling and Anti-Leakage)
   • 2RS double-sided contact seal: Nitrile rubber/fluororubber, prevents water vapor, dust, and medium intrusion, and grease leakage.
   • ZZ metal dust cover: Suitable for dry and clean environments, dust-proof, low cost.
   • Food-grade seal: FDA-certified rubber, resistant to hot water, steam, and acid and alkali cleaners.
3. Lubrication Scheme (Core of Hygiene Compliance)
   • Food-grade grease: NSF H1/FDA certified, non-toxic, odorless, high temperature resistant, can occasionally contact food.

   • Oil-free self-lubrication: PTFE cage/solid lubrication, suitable for high temperature, vacuum, and grease-prohibited scenarios.

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Typical Application Cases

• Food packaging line: 304 stainless steel deep groove ball bearing + 2RS seal + H1 grease, high-speed stability, easy cleaning, no leakage.
• Baking oven: 440C stainless steel bearing, high temperature resistance above 200℃, stable size, wear-resistant and long life.

• Pharmaceutical mixer: 316 stainless steel bearing with housing, acid and alkali resistant, easy cleaning, compliant with GMP sterile requirements.

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Maintenance Tips (Extend Life and Ensure Compliance)

• Regularly clean with hot water/steam, avoid long-term immersion in strong acid.
• Replenish food-grade grease to avoid contamination by ordinary grease.

• Check if the seal is aging and replace it in time to prevent leakage.

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