Introduction
At the Prins & Dingemanse mussel pickling factory in Yerseke, Netherlands, bearings are installed in machinery positioned directly above concentrated formic acid baths. The corrosive vapor environment destroys conventional bearings rapidly.
The Challenge
Formic acid produces extremely corrosive fumes that rise from the open pickling baths. Pillow block bearings mounted above these baths face constant exposure to acidic vapors. Even "stainless steel" bearings with carbon steel housings or low-grade stainless fail quickly. The acid attacks housing materials, compromises seals, and penetrates to corrode internal components. Frequent replacement was costly and caused production interruptions.
The Solution
Extreme Bearing pillow block units with complete AISI 316 stainless steel construction. Grade 316 specifically resists acid attack better than 304 or carbon steel. The excellent seal design prevents acid vapor from reaching internal components. All housing surfaces exposed to fumes maintain integrity despite the corrosive atmosphere.
Results
After 24+ months of continuous operation, the Extreme Bearings show no signs of acid damage, corrosion, or degradation. Regular inspections confirm the seals remain intact and effective. No bearing replacements have been required. Production continues uninterrupted without acid-related bearing failures.
Key Takeaways
- AISI 316 grade specifically resists acid vapors better than 304
- Complete housing construction in acid-resistant material is essential
- Effective sealing prevents acid vapor from reaching internal components
- 24+ month performance validates chemical resistance