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When metal bearings corrode, add unwanted weight, or create electrical interference in your build, engineers and DIY builders turn to plastic deep groove ball bearings as a reliable alternative. These POM nylon deep groove ball bearings are designed for hobbyists, robotics builders, 3D printer enthusiasts, and light-industrial maintenance teams who need a non-metallic rolling element that performs consistently in wet, chemical-exposed, or electrically sensitive environments.
Each bearing is machined from POM (polyoxymethylene) or nylon engineering plastic, delivering a self-lubricating, low-friction raceway. The range spans inner diameters from 10 mm (≈0.39 in) to 70 mm (≈2.76 in), with outer diameters and thicknesses scaled to standard deep groove series dimensions (6000, 6200, 6800, 6900 series and equivalents). Balls are typically plastic or stainless steel depending on the specific model — see variant options for exact configuration.
Typical use cases include 3D printer idler pulleys and carriage guides, food-processing conveyor rollers where metal contamination must be avoided, RC vehicle wheel hubs requiring lightweight rotating assemblies, and aquatic or marine equipment where corrosion resistance is critical. The low noise profile also makes these bearings well-suited for small fan assemblies and medical device prototypes.
| Bearing Type | Deep Groove Ball Bearing |
|---|---|
| Material | POM (Polyoxymethylene) / Nylon Engineering Plastic |
| Inner Diameter (ID) Range | 10 mm – 70 mm (≈0.39 in – 2.76 in) |
| Outer Diameter (OD) Range | See variant options |
| Width / Thickness Range | See variant options |
| Bearing Series | 6000 / 6200 / 6800 / 6900 series equivalents |
| Ball Material | See variant options |
| Lubrication | Self-lubricating (inherent to POM/nylon) |
| Operating Temperature | Typically –20°C to +80°C (–4°F to +176°F) |
| Corrosion Resistance | Water, mild acids, mild alkalis |
| Electrical Conductivity | Non-conductive |
| Available Quantities | 1 pcs / 2 pcs / 5 pcs / 10 pcs |
Match the inner diameter (ID) to your shaft diameter, the outer diameter (OD) to your housing bore, and the width to your available axial space. The variant name format is ID × OD × Thickness in mm, followed by the bearing series number in brackets — for example, 20×42×12mm【6004】. Cross-reference these dimensions with your existing bearing or engineering drawing before ordering.
POM and nylon bearings are designed for light-to-moderate radial loads. They are not suitable for heavy industrial loads that require steel or ceramic bearings. Typical applications include 3D printers, RC vehicles, small conveyor systems, and prototype equipment. If your application involves sustained high radial or axial loads, contact us to confirm suitability before ordering.
Yes. POM and nylon are inherently resistant to water and moisture, making these bearings a practical choice for aquatic equipment, food-processing machinery, and outdoor applications where condensation or splash exposure is expected. They will not rust or seize from water contact the way uncoated steel bearings can.
POM and nylon are self-lubricating materials, so these bearings can operate without additional grease or oil in many light-duty applications. If your application involves elevated speeds or temperatures, a small amount of compatible dry lubricant (such as PTFE spray) can extend service life. Avoid petroleum-based greases that may degrade certain plastics over time.
These bearings follow standard deep groove ball bearing envelope dimensions for the 6000, 6200, 6800, and 6900 series, so they will physically fit the same housing and shaft as a same-series steel bearing. However, plastic bearings have lower load ratings and a lower maximum operating temperature than steel equivalents. Confirm that your application's load and thermal requirements fall within the plastic bearing's operating range before substituting.
These series designations refer to standard bearing envelope proportions. The 6800 and 6900 series are thin-section bearings with a relatively small OD and width for a given bore size — useful where radial space is limited. The 6000 and 6200 series have progressively larger OD and width for the same bore, providing higher load capacity. Select the series that matches your housing geometry and load requirements.
For single-axis prototypes or repair jobs, 1 or 2 pcs is usually sufficient. For multi-axis machines such as 3D printers or CNC routers, ordering 5 or 10 pcs at once reduces per-unit cost and ensures you have spares on hand. The quantity options (1 / 2 / 5 / 10 pcs) are selectable directly from the variant menu above.
