Stainless Steel Deep Groove Ball Bearings

Stainless Steel Deep Groove Ball Bearings

High-performance corrosion-resistant deep groove ball bearings. Manufactured from premium AISI 440C (hardened) or AISI 304 (non-magnetic) stainless steel. Engineered for hygiene-critical and corrosive environments such as food processing, medical devices, and marine equipment.

Dual Material Options
Superior Hygiene
SFood Grade Lubrication
Sealing Versatility
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Standard chrome steel bearings often fail prematurely when exposed to moisture, chemicals, or frequent wash-downs due to rust. Our Stainless Steel Deep Groove Ball Bearingsprovide the ultimate solution for these challenging environments.
We offer two distinct grades to match your specific needs:

AISI 440C Series

This is the standard for stainless bearings. These bearings are heat-treated to achieve high hardness, allowing them to carry loads similar to standard chrome steel bearings while offering good corrosion resistance. They are magnetic and ideal for high-speed, high-load applications in damp environments.

MagneticSuitable for high-speed, high-load applicationsExcellent performance in wet environments


AISI 304 Series

For applications requiring extreme corrosion resistance (e.g., seawater, acids) or non-magnetic properties (e.g., MRI scanners), we offer bearings made from AISI 304. While softer and suitable for lower loads, they provide superior rust protection.

Non-magneticExtremely high corrosion resistanceSuitable for acidic environments

All bearings can be customized with food-grade grease and special seals to ensure compliance with hygiene standards in food and pharmaceutical industries.

Technical Specifications
ParameterAISI 440C (Standard)AISI 304 (Special)
Material (Rings & Balls)AISI 440C (Martensitic)AISI 304 (Austenitic)
HardnessHRC 58 - 65Not Hardened (Soft)
Load CapacityHigh (Similar to Chrome)Low
Magnetic PropertiesYes (Magnetic)No (Non-magnetic)
Corrosion ResistanceGood (Water/Steam)Excellent (Acids/Salt)
Seals2RS (NBR/Viton) / ZZ2RS / Open
LubricationLithium / Food GradeCustom
Applications

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Food & Beverage


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Medical


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Marine


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Chemical


FAQ
Can these bearings be used in saltwater?
Yes. For direct saltwater submersion, we strongly recommend our AISI 316 or 304 grade bearings for maximum corrosion resistance. Standard 440C is resistant to moisture but may eventually pit in salt water over long periods.
Do you offer food-grade grease?
Yes, we can pre-lubricate bearings with NSF H1 certified food-grade grease (e.g., Mobil FM 222) for applications in the food and beverage industry.
What is the difference between 440C and 304 bearings?
440C is hardened and magnetic, suitable for high loads and speeds. 304 is soft and non-magnetic, suitable for low loads but offers superior corrosion resistance (acid/salt).
What is your MOQ for stainless bearings?
For standard sizes (e.g., 608, 6204), we have stock and can support low MOQs (e.g., 100 pcs). For custom non-standard sizes, MOQ depends on material batch, typically starting around 500-1000 pcs.
Why Choose Huari Steel Ball?
Factory Direct Value
Factory Direct Value
As a manufacturer since 1986 with an annual capacity of 3,600 tons, we eliminate middlemen, offering you competitive factory-direct pricing and stable lead times.
1
Engineering Expertise
Engineering Expertise
Our team doesn't just sell parts; we provide solutions. We offer CAD/STEP drawing support and technical consultation to help you select the exact clearance (C0/C3) and grease type for your application.
2
Customization Flexibility
Customization Flexibility
Unlike rigid distributors, we support custom modifications, including special internal clearances, non-standard dimensions, and private labeling (OEM).
3
Certifications & Quality

Please Contact Us!

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