{"product_id":"aluminum-ball-bearings-0-5-70mm-precision-solid-balls","title":"Aluminum Ball bearings Ø 0.5-70 mm Diameter Precision aluminum ball Solid Balls","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003ePrecision Aluminum Solid Balls — Lightweight Accuracy from 0.5 mm to 70 mm\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands dimensional accuracy without the weight penalty of steel, finding a reliable source of precision aluminum balls in the exact diameter you need can be a real challenge. Whether you are a mechanical engineer prototyping a valve seat, a hobbyist building a custom bearing assembly, or a manufacturer sourcing bulk balls for automated equipment, inconsistent sizing and poor surface finish waste time and money. These precision aluminum solid balls are stocked across a wide diameter range — 0.5 mm (0.020 in) to 70 mm (2.756 in) — so you can match the exact specification your application requires.\u003c\/p\u003e\n\u003cp\u003eEach ball is machined from aluminum alloy stock, delivering a smooth, uniform spherical surface. Diameters span from 0.5 mm up to 70 mm, with both metric and inch-equivalent sizes available (e.g., 1.588 mm \/ 1\/16 in, 3.175 mm \/ 1\/8 in, 6.35 mm \/ 1\/4 in, 9.525 mm \/ 3\/8 in, 12.7 mm \/ 1\/2 in, 15.875 mm \/ 5\/8 in). Pack sizes range from 1 pc to 10,000 pcs to suit single-unit prototyping through high-volume production runs.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DIY bearing replacement and custom bearing assemblies, flow-control ball valves in low-pressure fluid systems, decorative and artistic fabrication requiring lightweight spherical components, and precision counterweight or balance applications in mechanical devices. The low density of aluminum makes these balls well suited for aerospace-adjacent hobby builds, RC vehicle components, and any application where reducing rotating mass improves performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e These aluminum balls are intended for light-duty, low-load applications. They are not rated for high-load radial or axial bearing races designed for steel balls. Verify diameter tolerance requirements against your housing or race specification before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Precision Aluminum Solid Balls\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Diameter Range:\u003c\/strong\u003e 0.5 mm to 70 mm in a single product line — metric and fractional inch sizes both available, eliminating the need to source from multiple suppliers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Aluminum Construction:\u003c\/strong\u003e Aluminum alloy delivers a density of approximately 2.7 g\/cm³, roughly one-third that of steel, reducing rotating and reciprocating mass in motion-critical assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth Spherical Surface:\u003c\/strong\u003e Machined to a consistent spherical profile suitable for valve seats, flow control, and low-friction contact applications where surface irregularity causes premature wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Material:\u003c\/strong\u003e Aluminum naturally forms a protective oxide layer, making these balls suitable for humid environments, light fluid contact, and outdoor hobby applications without additional coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Pack Quantities:\u003c\/strong\u003e Available from 1 pc (for prototyping or single repairs) up to 10,000 pcs (for production runs), with intermediate options of 10, 50, 100, 500, 1,000, and 5,000 pcs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Application Compatibility:\u003c\/strong\u003e Suited for DIY bearing assemblies, ball valve components, decorative fabrication, counterweight systems, and educational or laboratory use where dimensional accuracy matters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Aluminum Solid Balls\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e0.5 mm – 70 mm (0.020 in – 2.756 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Sizes\u003c\/th\u003e\n\u003ctd\u003e1 \/ 10 \/ 50 \/ 100 \/ 500 \/ 1,000 \/ 5,000 \/ 10,000 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eMachined smooth spherical surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDensity (approx.)\u003c\/th\u003e\n\u003ctd\u003e~2.7 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eNatural aluminum oxide layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Rating\u003c\/th\u003e\n\u003ctd\u003eLight-duty; not rated for high-load bearing races\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Unit\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTolerance Class\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right diameter for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the inner diameter of your housing, race, or valve seat with a caliper. The ball diameter should match the specified bore size — for bearing applications, consult the bearing manufacturer's tolerance table (typically G10–G100 grade). For valve seats, the ball should be 0.1–0.3 mm larger than the seat orifice to ensure a positive seal. If you are unsure, order a small sample pack (10 or 50 pcs) to test fit before committing to a bulk quantity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these balls strong enough for load-bearing mechanical assemblies?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum has a tensile strength of approximately 70–310 MPa depending on alloy grade, which is significantly lower than bearing-grade steel (typically 1,500–2,000 MPa). These balls are suitable for light-duty contact, low-load valve seats, decorative use, and applications where weight reduction is prioritized over compressive strength. They are not recommended as direct replacements for steel balls in high-load radial or axial bearing races.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these aluminum balls corrode or oxidize in wet or outdoor environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum naturally forms a thin, stable aluminum oxide (Al₂O₃) layer on its surface when exposed to air, which provides passive corrosion resistance in most ambient and mildly humid environments. For prolonged immersion in water, saltwater, or contact with strong acids or alkalis, additional anodizing or coating is recommended. For typical outdoor hobby use or light fluid-contact applications, the bare aluminum surface performs reliably without additional treatment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre fractional inch sizes available, and how do they correspond to metric?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Several listed diameters are fractional inch equivalents expressed in millimeters: 1.588 mm = 1\/16 in, 3.175 mm = 1\/8 in, 6.35 mm = 1\/4 in, 9.525 mm = 3\/8 in, 12.7 mm = 1\/2 in, 15.875 mm = 5\/8 in. Select the millimeter value that matches your inch specification. If you need a size not listed, contact us to confirm availability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pack size should I order for a production run versus a prototype?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor prototyping or single-unit repair, the 1 pc, 10 pcs, or 50 pcs options let you validate fit and function before committing to larger quantities. For small-batch production (typically 100–500 units), the 100 pcs or 500 pcs packs offer a cost-effective middle ground. For high-volume manufacturing or resale, the 1,000 pcs, 5,000 pcs, and 10,000 pcs packs provide the lowest per-unit cost. Note that not all pack sizes are available for every diameter — check the variant selector for your specific size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these balls in a DIY ball valve for a plumbing or fluid system?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum balls are compatible with low-pressure, low-temperature fluid systems carrying water, light oils, or air. They are not recommended for systems carrying strong acids, alkalis, or chlorinated fluids, as these can attack the oxide layer. For potable water applications, verify that your local plumbing code permits aluminum contact with drinking water. For high-pressure systems (above approximately 150 psi \/ 10 bar), consult an engineer before use, as aluminum's compressive yield strength may be insufficient for the seat load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Diameter and Pack Size above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"0.5mm \/ 5000 pcs","offer_id":52409691078930,"sku":"SSJWSUSAN2950x1","price":12.59,"currency_code":"USD","in_stock":true},{"title":"0.6mm \/ 10000 pcs","offer_id":52409691111698,"sku":"SSJWSUSAN2951x1","price":20.88,"currency_code":"USD","in_stock":true},{"title":"0.7mm \/ 10000 pcs","offer_id":52409691144466,"sku":"SSJWSUSAN2952x1","price":22.39,"currency_code":"USD","in_stock":true},{"title":"0.8mm \/ 10000 pcs","offer_id":52409691177234,"sku":"SSJWSUSAN2953x1","price":22.39,"currency_code":"USD","in_stock":true},{"title":"0.9mm \/ 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