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When a standard carbon-steel bearing fails in a wet, chemical, or food-contact environment, the cost is more than just a replacement part — it's downtime, contamination risk, and rework. Engineers, maintenance technicians, and precision-equipment builders who need a bearing that holds up in demanding conditions rely on stainless steel deep groove ball bearings to keep their assemblies running without rust-related failures.
These stainless steel deep groove ball bearings are available in two material grades — 304 Stainless Steel for general corrosion resistance and 440 Stainless Steel for higher hardness and load capacity — with inner diameters spanning 10–70mm (approximately 0.39–2.76 in). Each bearing features a ZZ double-shield configuration using pressed steel shields on both sides to retain grease and exclude contaminants. Models covered include the S6000ZZ through S6010ZZ (6000 series), S6200ZZ through S6210ZZ (6200 series), S6300ZZ through S6312ZZ (6300 series), sold individually or in packs of 2 or 4.
Typical use cases for these stainless steel deep groove ball bearings include food processing machinery where washdown cycles are routine, marine and watercraft equipment exposed to saltwater spray, laboratory instruments requiring non-magnetic or low-contamination bearing solutions, and light industrial automation where corrosion-resistant rotating elements are specified. The ZZ shield makes them suitable for moderate-speed applications where re-lubrication access is limited.
🔩 Dual Material Grades
Choose 304 Stainless Steel for excellent general-purpose corrosion resistance in wet or mildly acidic environments, or 440 Stainless Steel for greater surface hardness (typically 58–62 HRC) and higher radial load capacity where wear resistance matters.
🛡️ ZZ Double-Shield Design
Pressed steel shields on both sides retain factory-applied grease and block ingress of dust, light moisture, and particulate contamination — extending service intervals in environments where open bearings would require frequent maintenance.
📐 Wide Size Range — I.D 10–70mm
Covers the S6000ZZ through S6312ZZ series, giving engineers a single source for multiple shaft sizes from 10mm (≈0.39 in) up to 70mm (≈2.76 in) without switching suppliers mid-project.
⚡ Deep Groove Raceway Geometry
The deep groove profile supports both radial and moderate axial (thrust) loads in either direction, making these bearings versatile for motors, pumps, fans, conveyors, and precision spindles without requiring a separate thrust bearing in many designs.
🧪 Corrosion-Resistant for Harsh Environments
Stainless steel construction resists oxidation, humidity, mild chemicals, and washdown fluids — suitable for food-grade machinery, marine hardware, pharmaceutical equipment, and outdoor automation where carbon-steel bearings would corrode prematurely.
📦 Flexible Pack Quantities
Available in single units, packs of 2, or packs of 4 to match project scale — whether you need a single replacement bearing or a batch for a production run or maintenance stock.
| Bearing Type | Deep Groove Ball Bearing |
|---|---|
| Shield Configuration | ZZ (Double-Shielded, Both Sides) |
| Material Options | 304 Stainless Steel / 440 Stainless Steel |
| Inner Diameter (I.D.) Range | 10–70 mm (approx. 0.39–2.76 in) |
| Outer Diameter (O.D.) | See variant options |
| Bearing Width | See variant options |
| Series / Models | S6000ZZ–S6010ZZ, S6200ZZ–S6210ZZ, S6300ZZ–S6312ZZ |
| Lubrication | Grease-packed (factory-applied, sealed by ZZ shields) |
| Operating Temperature | Typically −20°C to +120°C (−4°F to +248°F) for grease-lubricated stainless bearings |
| Load Direction | Radial + Moderate Axial (Both Directions) |
| Dimensional Standard | ISO 15 / ABEC equivalent |
| Pack Quantities Available | 1 pc / 2 pcs / 4 pcs |
304 Stainless Steel offers excellent corrosion resistance in wet, humid, and mildly acidic environments and is the more common choice for food processing, laboratory, and general industrial use. 440 Stainless Steel is harder (typically 58–62 HRC after heat treatment) and provides higher radial load capacity and better wear resistance, making it preferable for higher-load or higher-speed applications where hardness matters more than maximum corrosion resistance. If your primary concern is rust prevention in a washdown environment, 304 is typically sufficient. If you need greater load capacity or surface hardness, choose 440.
"ZZ" indicates that the bearing has pressed steel shields on both sides of the bearing. These shields retain the factory-applied grease inside the bearing and prevent dust, light moisture, and particulate contamination from entering the raceway. ZZ bearings are not fully sealed (unlike RS or 2RS rubber-sealed bearings) — they are non-contact shields, which means they generate less friction and are suitable for moderate-speed applications. They are not recommended for full submersion in liquids.
Match the bearing's inner diameter (I.D.) to your shaft diameter. For example, an S6004ZZ has a 20mm bore and fits a 20mm shaft. The model number encodes the bore: for the 6000 series, the last two digits × 5 give the bore in mm for sizes 04 and above (e.g., 6004 = 04 × 5 = 20mm). For sizes 00–03, the bore is 10mm, 12mm, 15mm, and 17mm respectively. Always verify the outer diameter and width against your housing drawing to confirm fit before ordering.
Stainless steel construction makes these bearings significantly more suitable for food and pharmaceutical environments than standard carbon-steel bearings, as they resist corrosion from washdown fluids, mild cleaning agents, and humidity. However, for direct food-contact applications requiring FDA-compliant lubrication, confirm that the grease specification meets your regulatory requirements. Contact us to confirm grease type if this is a critical compliance requirement for your application.
Yes. Deep groove ball bearings support radial loads as their primary function and can also accommodate moderate axial (thrust) loads in both directions. They are not designed for heavy axial-only loads — for applications with predominantly axial loading, a dedicated thrust bearing would be more appropriate. For combined radial and moderate axial loads typical of motors, fans, pumps, and conveyors, deep groove ball bearings are well-suited.
For grease-lubricated stainless steel ZZ-shielded bearings, the typical operating temperature range is −20°C to +120°C (−4°F to +248°F). Exceeding the upper limit can degrade the grease and reduce bearing life. For high-temperature applications above 120°C, contact us to confirm suitability or discuss alternative lubrication options.
This depends on your application. Many shaft assemblies use bearings in pairs (one at each end of the shaft), so a pack of 2 is often the most practical choice for a single assembly. Packs of 4 offer a better per-unit price and are ideal for production runs, maintenance stock, or multi-axis assemblies. Single units are best for prototyping or one-off replacements where you only need to replace one failed bearing.
