One step further in corrosion resistance
Performance after 120 hours of salt spray test
The ZEN Anti-Corrosion+ treatment
An impenetrable barrier that prevents oxidation
The Natural Shield:
Stainless steel contains chromium, which reacts with oxygen to grow a “self-healing” thin layer of chromium oxide. This invisible passive layer helps shield the metal from oxygen, moisture and corrosion.
The Obstacle:
Tiny particles of free iron can get embedded in the bearing surface. These particles can interrupt the protective layer and create weak points where rust may begin.
The ZEN Solution:
The ZEN AC+ treatment performs a deep clean at the microscopic level, removing free-iron contaminants from the bearing surface. This allows the chromium to react more effectively with oxygen, promoting the formation of a stronger, more uniform chromium oxide layer. This layer is thicker, more uniform, and significantly more durable than what nature provides alone.
Product Range & Specifications
ZEN Anti-corrosion+ bearings are offered with NBR seals and metal shields and in an open version. They are provided with FDA-compliant Mobilgrease™ FM.
The ZEN AC+ treatment is available for
additional references on request
Food and Beverage Safe AISI 420 AC+ Bearings
Food and Beverage Safe AISI 420 AC+ Inserts
Engineered for demanding
operating conditions
ZEN Anti-Corrosion+ bearings are designed for applications where enhanced corrosion resistance is essential. They are particularly suitable for environments with frequent exposure to moisture, wash-down processes, cleaning agents, salt and other corrosive substances.
Applications
- Food and beverage industry
- Filling and packaging equipment
- Systems with regular wash-down cycles
- Pharmaceutical industry
- Medical industry
- Humid production environments
- Coastal & marine applications
- Machinery and equipment with stringent hygiene requirements
Why Choose ZEN Anti-Corrosion+ Bearings?
Enhanced corrosion resistance
ZEN Anti-Corrosion+ bearings are engineered to thrive where others fail. After 120 hours of testing, AISI 420 stainless steel ZEN Anti-Corrosion+ remained virtually untouched by corrosion.
Improved hygiene
By eliminating “free iron nests” on the surface, we remove the microscopic pits where bacteria and grime hide. This makes ZEN Anti-Corrosion+ bearings the gold standard for Medical, Pharmaceutical, and Food Processing industries, where hygiene is non-negotiable.
Long-Term Cost Efficiency
Extended bearing service life and reduced maintenance requirements help significantly lower the machinery’s Total Cost of Ownership (TCO).
ZEN Anti-corrosion+, AISI 420 & AISI 440
after 120 hours of salt spray test
Temperature
Frequently Asked Questions
Not at all. The ZEN Anti-Corrosion+ process is a controlled "subtractive" treatment that works at the molecular level. It removes surface contaminants and a negligible amount of iron (measured in Angstroms), ensuring that the high-precision tolerances of our AISI 420 races and ball complement remain strictly within ISO specifications. Furthermore, because it is a super-pure chemical process, the Rockwell hardness (HRC) achieved during heat treatment is completely unaffected, maintaining the load-bearing capacity you expect from ZEN.
We validated the superiority of ZEN Anti-Corrosion+ bearings through standardised 120 h Salt Spray Testing. Along with the sample of AISI 420 ZEN Anti-Corrosion+, samples of AISI 440 and 420 were included in the test. After 120 hours of testing, AISI 420 stainless steel ZEN Anti-Corrosion+ remained virtually untouched by corrosion. There was no rust mark on the inner and outer rings of the bearing, only some rust spots on the oil groove
Absolutely. The ZEN Anti-Corrosion+ process is an environmentally responsible treatment that leaves no hazardous residues. It is fully compliant with RoHS regulations. Because the treatment involves deep-cleaning the surface and then rinsing with deionised water, the resulting Chromium Oxide layer is chemically inert and non-toxic. This makes ZEN Anti-Corrosion+ bearings the ideal choice for FDA-regulated food processing and pharmaceutical environments where material purity is a top priority.
It all comes down to the Cost of Failure. Standard stainless steel is an excellent, cost-effective choice for indoor or "dry" environments where moisture is minimal. However, in "Stress Zones," like food wash-down lines, chemical processing, or coastal machinery, the risk of pitting and rust increases significantly.
We developed ZEN Anti-Corrosion+ as a premium tier for these high-stakes environments. By investing in the ZEN Anti-Corrosion+ treatment upfront, you eliminate the much higher costs of premature bearing failure, unscheduled downtime, and frequent maintenance in harsh conditions.
Would you like to know where your nearest ZEN Bearings distributor is, or do you have any other questions?
Get in touch!
