{"product_id":"solid-304-201-stainless-steel-ball-bearings-precision-bearing-balls-0-5mm-6mm","title":"Solid 304-201 Stainless Steel Ball Bearings Precision Bearing Balls 0.5mm- 6mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eStainless Steel Precision Bearing Balls — Corrosion-Resistant Rolling Elements for Demanding Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a bearing fails mid-project because the rolling elements corrode, pit, or lose their roundness tolerance, the entire assembly pays the price. Engineers, machinists, and serious DIYers who need reliable replacements or bulk fill stock turn to solid stainless steel bearing balls that hold their geometry under load and resist moisture without constant maintenance.\u003c\/p\u003e\n\u003cp\u003eThese precision bearing balls are manufactured from solid 304 or 201 stainless steel — your choice — and are available in diameters ranging from 0.5 mm (approx. 0.020 in) up to 6 mm (approx. 0.236 in). Each order is sold by weight (0.1 kg or 0.5 kg packs depending on diameter), so you receive a consistent, countable quantity of balls per pack as indicated in the variant options.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacement rolling elements in miniature radial bearings, ball-screw and linear-guide recirculation circuits, valve seats in fluid-control assemblies, and decorative or functional hardware in woodworking jigs and DIY mechanisms. The corrosion resistance of stainless steel makes these balls well-suited for food-adjacent equipment, marine hardware, and humid workshop environments where carbon-steel balls would rust within weeks.\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 Select the diameter that matches your bearing bore or seat specification. Mixed-grade packs are not available — choose 304 or 201 per order. Contact us to confirm tolerance grade if your application requires ABEC\/ISO-rated elements.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Stainless Steel Precision Bearing Balls\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eSolid stainless steel construction\u003c\/strong\u003e — Full solid cross-section with no hollow core; maintains load capacity and roundness under radial and axial stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eCorrosion-resistant alloy choice\u003c\/strong\u003e — 304 grade offers superior rust resistance for wet or outdoor environments; 201 grade provides a cost-effective alternative for moderate-humidity indoor use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cstrong\u003eWide diameter range (0.5 mm – 6 mm)\u003c\/strong\u003e — 27 diameter options in a single listing cover miniature instrument bearings up to standard small-bearing assemblies, reducing the need for multiple suppliers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003eSold by weight with grain count guidance\u003c\/strong\u003e — Each variant lists approximate grain count per pack so you can estimate coverage before ordering, minimising waste and over-ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eConsistent sphericity for smooth rolling\u003c\/strong\u003e — Uniform diameter within each pack supports even load distribution across the bearing raceway, reducing vibration and premature wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧰\u003c\/span\u003e \u003cstrong\u003eVersatile across industries\u003c\/strong\u003e — Suitable for bearing replacement, valve seats, linear guides, ball-screw recirculation, decorative hardware, and precision DIY mechanisms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Stainless Steel Bearing Balls\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial Options\u003c\/th\u003e\n\u003ctd\u003e304 Stainless Steel \/ 201 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e0.5 mm – 6 mm (approx. 0.020 in – 0.236 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 Weight Options\u003c\/th\u003e\n\u003ctd\u003e0.1 kg \/ 0.2 kg \/ 0.5 kg (varies by diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApproximate Grain Count\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBall Form\u003c\/th\u003e\n\u003ctd\u003eSolid sphere, no hollow core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eBright \/ smooth rolled surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTolerance Grade\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardness\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eBearing replacement, valve seats, linear guides, DIY mechanisms\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\u003eWhat is the difference between 304 and 201 stainless steel bearing balls?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel contains a higher nickel content (typically 8–10.5%) which gives it superior corrosion resistance, making it the preferred choice for wet environments, marine applications, and food-adjacent equipment. 201 stainless steel uses manganese in place of some nickel, offering moderate corrosion resistance at a lower cost — suitable for indoor, low-humidity applications where budget is a consideration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct diameter for my bearing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the existing balls with a micrometer or check your bearing's datasheet for the rolling-element diameter. The diameter listed in each variant is the nominal ball diameter. For critical applications, contact us to confirm the tolerance grade before ordering, as some assemblies require tighter roundness tolerances than standard commercial-grade balls provide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these balls suitable for food processing or medical equipment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel is widely used in food-contact and sanitary environments due to its corrosion resistance and ease of cleaning. However, suitability for regulated food or medical applications depends on your specific compliance requirements (e.g., FDA, NSF). We recommend confirming the material certification with us before use in regulated environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the approximate grain count mean, and how accurate is it?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe grain count listed per variant is an approximation based on the nominal diameter and pack weight, calculated from the theoretical volume and density of stainless steel. Actual count may vary slightly due to manufacturing tolerances and density variation between alloy grades. Use the count as a planning guide rather than an exact figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these balls in a ball-screw or linear guide recirculation circuit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, these balls are commonly used as replacement elements in ball-screw and linear-guide recirculation systems. Ensure the diameter matches your circuit's specification exactly — even a 0.1 mm deviation can affect preload and running smoothness. Contact us if you need a specific tolerance grade or surface finish for your application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill stainless steel balls rust or corrode over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStainless steel is significantly more corrosion-resistant than carbon steel, but it is not fully immune to corrosion in all environments. 304 grade performs well in most atmospheric and mildly acidic conditions. Prolonged exposure to chloride-rich environments (e.g., salt water) or strong acids can cause surface staining or pitting over time. For highly aggressive environments, consider specifying 316 grade — contact us to discuss availability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I order a mix of diameters in a single pack?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach variant is a single-diameter pack — mixed-diameter packs are not available as a standard option. If you need multiple diameters, add each as a separate line item. For large-volume or custom mixed orders, contact us directly to discuss options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Material, Diameter, and Packing Qty above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"304 Stainless Steel \/ 0.5mm \/ 0.1kg 【app. 190,000 grains】","offer_id":52410413318418,"sku":"LFL2024GANGZHU2453x1","price":285.46,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 0.6mm \/ 0.1kg 【app. 110,000 grains】","offer_id":52410413351186,"sku":"LFL2024GANGZHU2454x1","price":285.46,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 0.8mm \/ 0.2kg 【app. 90,000 grains】","offer_id":52410413383954,"sku":"LFL2024GANGZHU2455x1","price":69.06,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.0mm \/ 0.2kg 【app. 47,000 grains】","offer_id":52410413416722,"sku":"LFL2024GANGZHU2456x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.1mm \/ 0.2kg 【app. 36,000 grains】","offer_id":52410413449490,"sku":"LFL2024GANGZHU2457x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.2mm \/ 0.2kg 【app. 27,000 grains】","offer_id":52410413482258,"sku":"LFL2024GANGZHU2458x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.3mm \/ 0.2kg 【app. 21,000 grains】","offer_id":52410413515026,"sku":"LFL2024GANGZHU2459x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.4mm \/ 0.2kg 【app. 17,000 grains】","offer_id":52410413547794,"sku":"LFL2024GANGZHU2460x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.5mm \/ 0.2kg 【app. 36,000 grains】","offer_id":52410413580562,"sku":"LFL2024GANGZHU2461x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.58mm \/ 0.2kg 【app. 12,000 grains】","offer_id":52410413613330,"sku":"LFL2024GANGZHU2462x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.7mm \/ 0.2kg 【app. 9762 grains】","offer_id":52410413646098,"sku":"LFL2024GANGZHU2463x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.8mm \/ 0.2kg 【app. 8223 grains】","offer_id":52410413678866,"sku":"LFL2024GANGZHU2464x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 1.9mm \/ 0.2kg 【app. 69,920,000 grains】","offer_id":52410413711634,"sku":"LFL2024GANGZHU2465x1","price":41.48,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 2.0mm \/ 0.5kg 【app. 15,000 grains】","offer_id":52410413744402,"sku":"LFL2024GANGZHU2466x1","price":36.15,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 2.381mm \/ 0.5kg 【app. 8900 grains】","offer_id":52410413777170,"sku":"LFL2024GANGZHU2467x1","price":30.44,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 2.5mm \/ 0.5kg 【app. 7866 grains】","offer_id":52410413809938,"sku":"LFL2024GANGZHU2468x1","price":29.62,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 2.8mm \/ 0.5kg 【app. 5472 grains】","offer_id":52410413842706,"sku":"LFL2024GANGZHU2469x1","price":29.62,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 3mm \/ 0.5kg 【app. 4449 grains】","offer_id":52410413875474,"sku":"LFL2024GANGZHU2470x1","price":24.62,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 3.175mm \/ 0.5kg 【app. 3753 grains】","offer_id":52410413908242,"sku":"LFL2024GANGZHU2471x1","price":23.64,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 3.5mm \/ 0.5kg 【app. 2800 grains】","offer_id":52410413941010,"sku":"LFL2024GANGZHU2472x1","price":22.55,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 3.969mm \/ 0.5kg 【app. 1921 grains】","offer_id":52410413973778,"sku":"LFL2024GANGZHU2473x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 4mm \/ 0.5kg 【app. 1876 grains】","offer_id":52410414006546,"sku":"LFL2024GANGZHU2474x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 4.5mm \/ 0.5kg 【app. 1318 grains】","offer_id":52410414039314,"sku":"LFL2024GANGZHU2475x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 4.76mm \/ 0.5kg 【app. 1111 grains】","offer_id":52410414072082,"sku":"LFL2024GANGZHU2476x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 5mm \/ 0.5kg 【app. 960 grains】","offer_id":52410414104850,"sku":"LFL2024GANGZHU2477x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 5.556mm \/ 0.5kg 【app. 699 grains】","offer_id":52410414137618,"sku":"LFL2024GANGZHU2478x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"304 Stainless Steel \/ 6mm \/ 0.5kg 【app. 556 grains】","offer_id":52410414170386,"sku":"LFL2024GANGZHU2479x1","price":20.1,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 2mm \/ 0.5kg 【app. 14900 grains】","offer_id":52410414203154,"sku":"LFL2024GANGZHU2480x1","price":29.08,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 2.381mm \/ 0.5kg 【app. 8800 grains】","offer_id":52410414235922,"sku":"LFL2024GANGZHU2481x1","price":25.54,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 2.5mm \/ 0.5kg 【app. 7600 grains】","offer_id":52410414268690,"sku":"LFL2024GANGZHU2482x1","price":25.54,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 3mm \/ 0.5kg 【app. 4449 grains】","offer_id":52410414301458,"sku":"LFL2024GANGZHU2483x1","price":17.82,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 3.175mm \/ 0.5kg 【app. 3753 grains】","offer_id":52410414334226,"sku":"LFL2024GANGZHU2484x1","price":17.82,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 3.5mm \/ 0.5kg 【app. 2800 grains】","offer_id":52410414366994,"sku":"LFL2024GANGZHU2485x1","price":17.82,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 4mm \/ 0.5kg 【app. 1876 grains】","offer_id":52410414399762,"sku":"LFL2024GANGZHU2486x1","price":16.46,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 4.5mm \/ 0.5kg 【app. 1318 grains】","offer_id":52410414432530,"sku":"LFL2024GANGZHU2487x1","price":14.93,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 4.76mm \/ 0.5kg 【app. 1111 grains】","offer_id":52410414465298,"sku":"LFL2024GANGZHU2488x1","price":14.93,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 5mm \/ 0.5kg 【app. 960 grains】","offer_id":52410414498066,"sku":"LFL2024GANGZHU2489x1","price":14.93,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 5.556mm \/ 0.5kg 【app. 699 grains】","offer_id":52410414530834,"sku":"LFL2024GANGZHU2490x1","price":14.93,"currency_code":"USD","in_stock":true},{"title":"201 Stainless Steel \/ 6mm \/ 0.5kg 【app. 556 grains】","offer_id":52410414563602,"sku":"LFL2024GANGZHU2491x1","price":14.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-06_681bc6df-c22e-470a-8c68-897939b573a1.jpg?v=1782441107","url":"https:\/\/homediyer.com\/products\/solid-304-201-stainless-steel-ball-bearings-precision-bearing-balls-0-5mm-6mm","provider":"HomeDIYer","version":"1.0","type":"link"}