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Welcome to Henan San Kuang Machinery Technology Co., Ltd. — a trusted manufacturer with over a decade of experience in precision bearing solutions. Our Anti-corrosion Waterproof Stainless Steel Bearing is designed to deliver exceptional performance in the harshest environments, combining corrosion resistance, complete waterproof sealing, and fully customizable dimensions. Whether you need bearings for marine equipment, food processing lines, or chemical pumps, this product ensures long service life and minimal maintenance. With our factory spanning 10,000–30,000 square meters and a dedicated R&D team, we engineer every bearing to meet your exact specifications.
This bearing series is built from high-grade stainless steel (SUS304 or SUS316 optional) and features advanced waterproof seals that prevent ingress of water, dust, and corrosive agents. The custom size capability allows you to order any inner diameter, outer diameter, or width, making it ideal for retrofit projects or OEM designs. Below we detail the key features, technical specifications, and the tangible benefits your business will gain.
Key Features & Benefits
- 100% Stainless Steel Construction — Eliminates rust and corrosion in washdown, saltwater, and chemical environments.
- IP66-Equivalent Waterproof Sealing — Double-lip contact seals with stainless steel shield keep contaminants out and lubricant in.
- Customizable Dimensions — We accept any size request from 10 mm to 500 mm OD, with tight tolerances as low as P6 or P5 grade.
- High Load Capacity — Optimized raceway geometry and full complement ball options support heavy radial and axial loads.
- Extended Service Life — Food-grade grease and anti-corrosion surface treatment reduce wear and increase intervals between replacements.
- Versatile Applications — Suitable for marine winches, food conveyor belts, pharmaceutical mixers, outdoor gates, and more.
Technical Specifications (Typical Examples)
| Parameter | Value / Option |
|---|---|
| Material | SUS304, SUS316, or 17-4PH (custom) |
| Sealing Type | Double-lip rubber seal + stainless steel slinger |
| Tolerance Grade | P0, P6, P5 (ABEC 1/3/5 equivalent) |
| Dynamic Load Rating | From 2.5 kN to 250 kN (size-dependent) |
| Max Speed | Up to 8000 rpm (grease lubrication) |
| Operating Temperature | -30°C to +150°C (with high-temp grease) |
| Waterproof Test | IP66 equivalent (1m depth, 30 min) |
Every bearing undergoes rigorous quality checks including dimensional inspection, noise testing, and water ingress simulation. Our manufacturing facility is equipped with CNC grinders, honing machines, and automated assembly lines to ensure consistency in custom orders. With 51–100 experienced employees and an annual export value of US$2.5 Million – US$5 Million, we serve clients across North America, Europe, Asia, and beyond. We ship from major ports including Shanghai, Qingdao, Lianyungang, and Tianjin, ensuring timely delivery worldwide.
Choosing our anti-corrosion waterproof stainless steel bearing means you invest in reliability. The custom size option eliminates the need for adapters or redesigns — simply provide your dimensions and we will produce a bearing that fits perfectly. Combined with our ISO9001-certified quality management system (and compliance with standards like HACCP, QS9000, SA8000, ISO14000, etc.), you receive a product that meets international requirements without compromise.
We understand that each application is unique. That’s why we offer free technical consultation for custom bearing design — from load calculations to seal selection. Our engineers will work with your team to optimize the bearing geometry for your specific operating conditions. Whether you need a batch of 50 pieces for a prototype or 50,000 for mass production, we have the capacity and flexibility to deliver.
Trust the numbers: Since our establishment in 2014, Henan San Kuang Machinery Technology has grown to a factory area of 10,000–30,000 m² and serves 14 major markets including North America, South America, Europe, Africa, and Oceania. Over 90% of our customers reorder within 12 months, thanks to our consistent quality and responsive after-sales service. Your satisfaction is our priority — we provide technical documentation, 3D drawings, and fast shipping for all custom bearing orders.
Ready to upgrade your equipment with bearings that last? Contact our sales team today for a quotation on your custom size. We will reply within 24 hours with a detailed proposal, including delivery lead time. Let us help you reduce downtime and increase productivity with our anti-corrosion waterproof stainless steel bearings.
Frequently Asked Questions
Q1: What stainless steel grades do you use for the bearings?
A: We primarily use SUS304 (AISI 304) and SUS316 (AISI 316) stainless steel for rings and balls. For applications requiring higher hardness, 17-4PH is also available. The material choice depends on your corrosion and load requirements.
Q2: Can I order a non-standard size, like 32 mm inner diameter?
A: Absolutely. Our custom size service covers any inner diameter (from 10 mm to 500 mm), outer diameter, and width. We also accept hybrid dimensions that are not listed in standard catalogs. Just provide your drawing or dimensions.
Q3: How waterproof are these bearings? Can they be submerged?
A: Yes, they are designed for intermittent submersion. Our standard sealing achieves IP66 equivalent — protected against powerful water jets and temporary immersion up to 1 meter for 30 minutes. For continuous submersion, we can enhance the seal design on request.
Q4: What lubrication do you recommend for food industry use?
A: We offer NSF H1 food-grade grease as a standard option for food contact applications. For high-temperature or low-temperature environments, we can select special greases (e.g., silicone, PFPE) to match your operating range.
Q5: Do you provide any certification for material traceability?
A: Yes, we can provide material test certificates (MTC) per EN 10204 3.1 or 3.2 for the stainless steel. Additional certifications like dimensional reports, noise test reports, and sealing test reports are available upon request.
Q6: What is the typical lead time for a custom order?
A: For standard custom sizes (without special seal or material), lead time is 15–25 working days after drawing approval and down payment. For large quantities or complex designs, please allow 30–45 days. We also offer express service for urgent needs.
Q7: How do I ensure the bearing fits my existing housing and shaft?
A: We recommend providing the housing bore diameter, shaft diameter, and desired fit tolerance (e.g., H7, h6). Our engineering team will confirm the bearing dimensions and recommend appropriate clearance or interference. We also offer 3D modeling for verification before production.
Q8: What is your minimum order quantity (MOQ) for custom bearings?
A: MOQ for custom sizes is 10 pieces for small diameters and 5 pieces for larger sizes. For regular stock sizes, MOQ can be as low as 1 piece. We are flexible to support both prototype and mass production needs.
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