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When standard steel bearings corrode, seize, or add unwanted weight to your build, you need a smarter alternative. Engineers, makers, and DIY builders working in wet, chemical, or food-adjacent environments often struggle to find bearings that hold up without rust or magnetic interference. These POM plastic deep groove ball bearings with glass balls are engineered for exactly those demanding conditions.
Each bearing features a full-complement POM (polyoxymethylene acetal) outer and inner race paired with precision glass rolling elements. Available in a wide range of sizes — inner diameter (ID) from 3mm (0.12 in) to 70mm (2.76 in), outer diameter (OD) from 7mm (0.28 in) to 100mm (3.94 in), and thickness from 2mm (0.08 in) to 20mm (0.79 in) — covering miniature to medium-duty applications. Sold in 1pcs, 5pcs, or 10pcs quantities to match your project scale.
Ideal for corrosion-resistant bearing applications in aquatic equipment, laboratory instruments, food processing machinery, RC models, 3D printer carriages, and light-load conveyor systems where non-metallic deep groove ball bearings are required.
| Material — Race | POM (Polyoxymethylene / Acetal) |
|---|---|
| Material — Rolling Elements | Glass balls |
| Bearing Type | Deep groove ball bearing, open (unshielded) |
| Inner Diameter (ID) | 3mm – 70mm (0.12 in – 2.76 in) — see variant options |
| Outer Diameter (OD) | 7mm – 100mm (0.28 in – 3.94 in) — see variant options |
| Thickness (Width) | 2mm – 20mm (0.08 in – 0.79 in) — see variant options |
| Corrosion Resistance | Water, mild acids, mild alkalis, many solvents |
| Magnetic Properties | Non-magnetic |
| Operating Temperature | Typically –40°C to +100°C (–40°F to +212°F) |
| Load Type | Radial; moderate axial (both directions) |
| Lubrication | Contact us to confirm |
| Quantity per Pack | 1pcs / 5pcs / 10pcs — see variant options |
Match the Inner Diameter (ID) to your shaft diameter, the Outer Diameter (OD) to your housing bore, and the Thickness to your housing depth. All three dimensions are listed in each variant name in the format ID×OD×Thickness (mm). Select your exact size from the dropdown above before adding to cart.
Yes. The POM race and glass balls are inherently corrosion-resistant and will not rust when exposed to water, moisture, or mild aqueous solutions. They are commonly used in aquatic equipment, irrigation systems, and humid industrial environments. For fully submerged continuous operation, confirm the specific chemical compatibility with your fluid.
POM plastic bearings with glass balls have lower dynamic and static load ratings than equivalent steel bearings. They are designed for light-to-moderate radial loads and are not recommended for heavy-duty or high-impact applications. For exact load ratings by size, contact us to confirm.
Yes. Both the POM race and glass rolling elements are fully non-magnetic. This makes them suitable for use near sensitive electronics, MRI-adjacent equipment, magnetic sensors, and other applications where metal bearings would cause interference.
POM plastic bearings typically operate reliably from –40°C to +100°C (–40°F to +212°F). Sustained exposure above 100°C may cause dimensional changes in the POM race. For high-temperature applications, consider ceramic or stainless steel alternatives.
POM and glass are commonly used in food-adjacent and laboratory equipment due to their chemical inertness and non-metallic composition. However, food-grade or medical-grade certification requirements vary by application and jurisdiction. Contact us to confirm compliance documentation before use in regulated environments.
Lubrication status varies by size and batch. Contact us to confirm whether your selected size ships dry or with lubrication applied. For most light-duty applications, a small amount of compatible grease or oil can be applied at installation.
These are standard metric bearing series designations indicating the relationship between bore size and outer diameter. The 60-series has a smaller OD-to-ID ratio (lighter section), the 62-series is medium section, the 63-series is heavier section with a larger OD for the same bore, and the 68-series is a thin-section design. Choose based on your housing space and load requirements. All series are available in this listing — select your exact size from the variant dropdown.
