Solid POM Plastic Balls – 2mm to 50.8mm (1/16" to 2") – Precision Spheres for Bearings
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Quality issue support
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Standard shipping is included in the price of listed standard-size products. Contact us for expedited shipping or delivery arrangements for custom or oversized orders. Returns are accepted for quality problems under our refund policy, without limiting applicable statutory rights.
- 14.288mm / 1PCS - $25.18
- 15mm / 1PCS - $25.18
- 15.875mm / 1PCS - $25.18
- 16mm / 1PCS - $25.18
- 17mm / 1PCS - $25.18
- 18mm / 1PCS - $25.18
- 19.05mm / 1PCS - $25.18
- 20mm / 1PCS - $25.18
- 22.225mm / 1PCS - $25.18
- 24mm / 1PCS - $25.18
- 25mm / 1PCS - $25.65
- 25.4mm / 1PCS - $25.65
- 30mm / 1PCS - $25.65
- 32mm / 1PCS - $25.65
- 35mm / 1PCS - $25.65
- 38.1mm / 1PCS - $25.65
- 40mm / 1PCS - $25.65
- 45mm / 1PCS - $25.65
- 50mm / 1PCS - $25.65
- 50.8mm / 1PCS - $26.65
- 5mm / 10PCS - $24.13
- 4.5mm / 10PCS - $24.11
- 2.778mm / 10PCS - $24.08
- 3mm / 10PCS - $24.08
- 3.175mm / 10PCS - $24.08
- 2mm / 10PCS - $24.08
- 2.38mm / 10PCS - $24.08
- 2.5mm / 10PCS - $24.08
- 11.11mm / 10PCS - $24.29
- 12mm / 10PCS - $24.29
- 12.7mm / 10PCS - $24.29
- 14mm / 10PCS - $24.29
- 9mm / 10PCS - $24.29
- 9.525mm / 10PCS - $24.29
- 10mm / 10PCS - $26.19
- 7.14mm / 10PCS - $25.19
- 8mm / 10PCS - $26.25
- 8.73mm / 10PCS - $25.32
- 6.35mm / 10PCS - $25.29
- 7mm / 10PCS - $25.29
- 14.288mm / 10PCS - $27.80
- 15mm / 10PCS - $27.94
- 15.875mm / 10PCS - $27.94
- 16mm / 10PCS - $27.94
- 17mm / 10PCS - $28.34
- 18mm / 10PCS - $29.41
- 19.05mm / 10PCS - $29.75
- 20mm / 10PCS - $29.75
- 22.225mm / 10PCS - $29.66
- 24mm / 10PCS - $30.46
- 25mm / 10PCS - $32.06
- 25.4mm / 10PCS - $32.47
- 30mm / 10PCS - $32.85
- 32mm / 10PCS - $32.85
- 35mm / 10PCS
- 38.1mm / 10PCS
- 40mm / 10PCS
- 45mm / 10PCS
- 50mm / 10PCS
- 50.8mm / 10PCS
- 4mm / 50PCS - $32.05
- 4.5mm / 50PCS - $22.05
- 2.778mm / 50PCS - $22.05
- 3mm / 50PCS - $22.05
- 3.175mm / 50PCS - $22.05
- 2mm / 50PCS - $22.05
- 2.38mm / 50PCS - $22.05
- 2.5mm / 50PCS - $22.05
- 11.11mm / 50PCS - $23.87
- 12mm / 50PCS - $24.85
- 12.7mm / 50PCS - $25.54
- 14mm / 50PCS - $26.72
- 9mm / 50PCS - $27.72
- 9.525mm / 50PCS - $28.12
- 10mm / 50PCS - $33.24
- 7.14mm / 50PCS - $33.86
- 8mm / 50PCS - $33.96
- 8.73mm / 50PCS - $33.97
- 6.35mm / 50PCS - $33.87
- 7mm / 50PCS - $33.80
- 14.288mm / 50PCS - $33.93
- 15mm / 50PCS - $34.02
- 15.875mm / 50PCS - $35.61
- 16mm / 50PCS - $36.70
- 17mm / 50PCS - $37.14
- 18mm / 50PCS - $38.14
- 19.05mm / 50PCS - $39.70
- 20mm / 50PCS - $40.75
- 22.225mm / 50PCS - $41.24
- 24mm / 50PCS - $42.04
- 25mm / 50PCS - $43.04
- 25.4mm / 50PCS - $44.04
- 30mm / 50PCS - $44.04
- 32mm / 50PCS - $44.04
- 35mm / 50PCS - $44.04
- 38.1mm / 50PCS - $44.04
- 40mm / 50PCS - $44.04
- 45mm / 50PCS - $44.04
- 50mm / 50PCS - $44.04
- 50.8mm / 50PCS - $45.04
PRODUCT DETAILS
Precision POM Plastic Balls for Bearings, Mechanical Systems, and DIY Projects
Discover the high-precision performance of our solid POM plastic balls, available in sizes ranging from 2mm to 50.8mm (1/16" to 2"). Made from polyoxymethylene (also known as Delrin), these engineering-grade spheres offer exceptional strength, wear resistance, and dimensional stability — perfect for demanding applications such as precision bearings, motion assemblies, and mechanical structures.
Whether you’re an engineer designing a critical component or a DIY enthusiast building a robotics project, these high-tolerance POM balls are your go-to choice.
Features and Functional Advantages of POM Plastic Balls
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Made from Virgin Polyoxymethylene (POM): Known for low friction, high rigidity, and excellent creep resistance.
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Wide Size Selection: From miniature 2mm balls to large 50.8mm (2") options, ideal for both metric and imperial systems.
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Excellent Dimensional Stability: Perfect for precision bearings and tight tolerance systems.
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Low Friction Coefficient: Smooth operation in rotary and sliding applications.
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Resistant to Wear, Impact, and Chemicals: Long-lasting performance even under continuous mechanical stress.
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Color Options: Available in black, white, and clear — ideal for color-coded systems or aesthetic use.
Applications of High Precision POM Spheres
Our solid POM plastic balls serve a wide range of industries and projects, including:
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Precision bearing assemblies
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Rolling track mechanisms
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Robotic joints and CNC components
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Linear sliders and guides
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Furniture and appliance wheels
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Prototyping and hobby kits
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Educational STEM toys and experiments
Metric & Imperial Sizing Reference (mm ↔ inch)
Choose from over 30 diameter options with matching inch sizes for global compatibility:
| Diameter (mm) | Imperial Equivalent |
|---|---|
| 2mm | 0.079" |
| 3mm | 0.118" |
| 3.175mm | 1/8" |
| 4mm | 0.157" |
| 4.763mm | 3/16" |
| 6.35mm | 1/4" |
| 7.14mm | 0.281" |
| 9.525mm | 3/8" |
| 12.7mm | 1/2" |
| 15.875mm | 5/8" |
| 19.05mm | 3/4" |
| 22.225mm | 7/8" |
| 25.4mm | 1" |
| 50.8mm | 2" |
Available in packs of 1, 10, and 50.
Why Choose Custominsul?
At Custominsul, we are more than just a plastic supplier — we are your engineering partner. Here's why global customers trust us:
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🧩 Unmatched Material Variety: We offer one of the broadest selections of plastic materials online.
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🛠 Custom Fabrication: Need drilled holes, machined features, or special color blends? We support full customization of your POM balls.
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📦 Fast and Reliable Fulfillment: All orders are handled with care, and shipped promptly from our warehouse.
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💰 Save Time, Save Costs: We help reduce your supply chain stress and unnecessary expense by providing ready-to-use, cost-effective solutions.
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🤝 We Think Like You Do: We understand engineers, procurement teams, and makers. Our goal is to help you get exactly what you need — faster, cheaper, and with better support.
Ready to Order?
✅ Select your preferred size and quantity above and add to cart.
💬 Need a custom diameter, color, or bulk pricing? [Contact us now] — we respond fast and quote clearly!
Frequently Asked Questions (FAQ)
Q1: What are the mechanical properties of POM plastic balls?
A1: POM balls offer high stiffness, excellent dimensional stability, and low friction. They can withstand continuous operation and are ideal for precision motion systems.
Q2: Can you provide custom sizes or machining for these balls?
A2: Absolutely. We offer custom diameter, drilling, polishing, and coloring for POM plastic spheres. Simply reach out to us for a quote.
Q3: Are these POM balls suitable for outdoor use or wet environments?
A3: Yes. POM is resistant to moisture, chemicals, and moderate UV exposure, making it suitable for many indoor and outdoor applications.
Q4: What’s the typical shipping time to North America and Europe?
A4: Most orders are processed within 1–2 business days. Standard shipping takes 7–12 days, with express options available.
💡 Don’t settle for generic plastic balls — choose engineered precision.
🛒 Add your size to cart now, or [contact us] for a tailored solution.
REVIEWS
SHIPPING & RETURNS
Shipping
Standard shipping is included in the price of listed standard-size products. For expedited shipping, custom or oversized orders, or a delivery deadline, contact us to confirm available arrangements and any additional charges before ordering. See our shipping policy for details.
Returns and quality problems
Our voluntary return policy covers quality problems; we do not offer change-of-mind returns. This does not limit applicable statutory rights, including withdrawal rights for eligible consumer purchases. For the return process and eligibility, see our refund policy.
If an item is defective, damaged or incorrect, email Custominsul@Custominsul.com with your order number, a description and clear photos. Please contact us before shipping an item back.
CUSTOM FABRICATION
Can't Find the Right Size or Specification?
Send your drawing or dimensions, material grade if known, quantity and intended use. We review feasibility and confirm the specification for each quoted project.
Project Requirements
Identify the critical dimensions, tolerances, surface finish and inspection requirements. Any required food-contact, ESD, flame-retardant or other compliance documents should be specified so availability can be checked. Material names alone do not establish these properties.
Custom Order Process
Submit the requirements for review. The quotation will identify the agreed specification, quantity, production lead time and inspection requirements. Shipping method, shipping charges and tax responsibilities are confirmed separately from production timing. Approve the final quotation and specification before ordering.
Send Your Drawing or Requirements
Use the enquiry form to send your project details and a file link, or email drawings to Custominsul@Custominsul.com. Include the product and specification. If the material grade or tolerance is uncertain, describe the intended use for review.
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