{"product_id":"solid-304-stainless-steel-ball-bearings-20-100mm","title":"Solid 304 Stainless Steel Ball Bearings 20 25 30 35 40 45 50.8 75 76.2 85mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e304 Stainless Steel Ball Bearings — Precision-Ground Solid Balls for DIY \u0026amp; Industrial Use\u003c\/h2\u003e\n\u003cp\u003eWhen a loose, pitted, or undersized ball causes a bearing assembly to fail mid-project, the cost is more than just the part — it's downtime, rework, and frustration. DIYers, machinists, and maintenance professionals who need a reliable replacement or a precision component for a custom build require balls that hold tight tolerances and resist corrosion without constant upkeep.\u003c\/p\u003e\n\u003cp\u003eThese solid 304 stainless steel ball bearings are precision-ground from grade 304 austenitic stainless steel, offering a smooth, consistent surface finish suited to both static and dynamic load applications. Available in diameters ranging from 20 mm (approx. 0.79 in) to 100 mm (approx. 3.94 in), each ball is sold in packs of 1, 2, or 5 pieces depending on the selected size.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacement balls in pillow block and flanged bearing housings, valve seats in fluid control systems, and load-distributing elements in custom jigs, fixtures, and transfer tables. The 304 alloy's resistance to oxidation also makes these balls well-suited for damp workshop environments and light washdown applications where carbon steel would corrode.\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:\u003c\/strong\u003e Suitable for standard bearing housings, valve assemblies, and custom mechanical fixtures accepting solid balls from 20 mm to 100 mm diameter. Verify bore diameter and tolerance class before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 304 Stainless Steel Ball Bearings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eGrade 304 Stainless Steel Construction\u003c\/strong\u003e — Austenitic 304 alloy provides solid corrosion resistance against moisture, mild acids, and oxidizing environments, extending service life compared to standard carbon steel balls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cstrong\u003eWide Diameter Range: 20 mm – 100 mm\u003c\/strong\u003e — 24 size options from 20 mm (0.79 in) to 100 mm (3.94 in) cover the majority of standard bearing and valve seat applications without custom sourcing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003ePrecision-Ground Surface Finish\u003c\/strong\u003e — Smooth, consistent spherical surface reduces friction and wear in rotating or sliding contact applications, maintaining dimensional accuracy over repeated use cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Available in 1, 2, or 5-piece packs so you can order exactly what the job requires — no overstocking, no hunting for singles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cstrong\u003eSuitable for Damp \u0026amp; Washdown Environments\u003c\/strong\u003e — The 304 alloy's passive oxide layer resists surface rust in humid workshops, light outdoor enclosures, and low-concentration chemical exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eVersatile Application Fit\u003c\/strong\u003e — Used as replacement bearing elements, valve balls, transfer table rollers, and load-distribution components in jigs, fixtures, and custom mechanical assemblies.\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 Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e304 Austenitic Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eSolid sphere (no hollow core)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e20 mm – 100 mm (0.79 in – 3.94 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e20, 25, 28, 30, 32, 35, 38.1, 40, 42, 45, 48, 50, 50.8, 55, 60, 63.5, 65, 70, 75, 76.2, 80, 85, 90, 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003ePrecision-ground, smooth spherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003eSee variant options (1 pc \/ 2 pcs \/ 5 pcs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Ball\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\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplicable Standards\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 bearing housing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the bore diameter of your bearing housing or valve seat with a caliper. The ball diameter should match the bore specification exactly — even a 0.1 mm mismatch can cause excessive play or binding. Cross-reference your housing's datasheet or OEM part number to confirm the required ball size before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these balls solid or hollow?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are fully solid 304 stainless steel balls with no hollow core. Solid construction provides uniform load distribution and prevents deformation under compressive loads, making them suitable for both static load-bearing and dynamic rolling applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill 304 stainless steel rust or corrode?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eGrade 304 stainless steel forms a passive chromium oxide layer that resists rust in most workshop and light industrial environments, including exposure to moisture, humidity, and mild cleaning agents. It is not fully immune to corrosion in high-chloride environments (such as saltwater immersion) or strong acids — for those conditions, 316 stainless steel is typically recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these balls be used in food-grade or sanitary applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel is widely used in food processing equipment and meets general food-contact material standards in many jurisdictions. However, suitability for a specific regulated application depends on local compliance requirements. Contact us to confirm if you need documentation for a regulated food or pharmaceutical environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these compatible with standard pillow block or flanged bearing housings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese solid balls are designed as replacement or custom-build components for bearing assemblies, valve seats, and similar housings that accept a solid ball element. Verify the required ball diameter and surface finish grade against your housing specification. They are not pre-assembled bearing units with inner\/outer races.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy does the pack quantity vary by diameter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eLarger diameter balls are significantly heavier and more material-intensive, so smaller pack quantities are offered at larger sizes to keep per-order weight and cost practical. Smaller diameters (20–25 mm) are available in 5-piece packs, mid-range sizes (28–40 mm) in 2-piece packs, and larger sizes (42 mm and above) in single-piece packs. Select the diameter and quantity combination that matches your project needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow should I store these balls to prevent surface damage?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStore in a dry location away from direct contact with carbon steel tools or surfaces that could cause galvanic corrosion or surface scratching. Keeping balls in their original packaging or a clean, dry container prevents surface contamination that could affect performance in precision applications.\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 Packing Qty above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"20mm \/ 5pcs","offer_id":52409667551506,"sku":"LFL2024GANGZHU4028x5","price":17.54,"currency_code":"USD","in_stock":true},{"title":"25mm \/ 5pcs","offer_id":52409667584274,"sku":"LFL2024GANGZHU4029x5","price":28.33,"currency_code":"USD","in_stock":true},{"title":"28mm \/ 2pcs","offer_id":52409667617042,"sku":"LFL2024GANGZHU4030x2","price":18.4,"currency_code":"USD","in_stock":true},{"title":"30mm \/ 2pcs","offer_id":52409667649810,"sku":"LFL2024GANGZHU4031x2","price":21.58,"currency_code":"USD","in_stock":true},{"title":"32mm \/ 2pcs","offer_id":52409667682578,"sku":"LFL2024GANGZHU4032x2","price":24.37,"currency_code":"USD","in_stock":true},{"title":"35mm \/ 2pcs","offer_id":52409667715346,"sku":"LFL2024GANGZHU4033x2","price":32.83,"currency_code":"USD","in_stock":true},{"title":"38.1mm \/ 2pcs","offer_id":52409667748114,"sku":"LFL2024GANGZHU4034x2","price":41.7,"currency_code":"USD","in_stock":true},{"title":"40mm \/ 2pcs","offer_id":52409667780882,"sku":"LFL2024GANGZHU4035x2","price":50.01,"currency_code":"USD","in_stock":true},{"title":"42mm \/ 1pcs","offer_id":52409667813650,"sku":"LFL2024GANGZHU4036x1","price":29.66,"currency_code":"USD","in_stock":true},{"title":"45mm \/ 1pcs","offer_id":52409667846418,"sku":"LFL2024GANGZHU4037x1","price":35.09,"currency_code":"USD","in_stock":true},{"title":"48mm \/ 1pcs","offer_id":52409667879186,"sku":"LFL2024GANGZHU4038x1","price":41.7,"currency_code":"USD","in_stock":true},{"title":"50mm \/ 1pcs","offer_id":52409667911954,"sku":"LFL2024GANGZHU4039x1","price":47.67,"currency_code":"USD","in_stock":true},{"title":"50.8mm \/ 1pcs","offer_id":52409667944722,"sku":"LFL2024GANGZHU4040x1","price":50.16,"currency_code":"USD","in_stock":true},{"title":"55mm \/ 1pcs","offer_id":52409667977490,"sku":"LFL2024GANGZHU4041x1","price":62.49,"currency_code":"USD","in_stock":true},{"title":"60mm \/ 1pcs","offer_id":52409668010258,"sku":"LFL2024GANGZHU4042x1","price":79.15,"currency_code":"USD","in_stock":true},{"title":"63.5mm \/ 1pcs","offer_id":52409668043026,"sku":"LFL2024GANGZHU4043x1","price":92.02,"currency_code":"USD","in_stock":true},{"title":"65mm \/ 1pcs","offer_id":52409668075794,"sku":"LFL2024GANGZHU4044x1","price":107.21,"currency_code":"USD","in_stock":true},{"title":"70mm \/ 1pcs","offer_id":52409668108562,"sku":"LFL2024GANGZHU4045x1","price":133.59,"currency_code":"USD","in_stock":true},{"title":"75mm \/ 1pcs","offer_id":52409668141330,"sku":"LFL2024GANGZHU4046x1","price":170.6,"currency_code":"USD","in_stock":true},{"title":"76.2mm \/ 1pcs","offer_id":52409668174098,"sku":"LFL2024GANGZHU4047x1","price":177.94,"currency_code":"USD","in_stock":true},{"title":"80mm \/ 1pcs","offer_id":52409668206866,"sku":"LFL2024GANGZHU4048x1","price":309.25,"currency_code":"USD","in_stock":true},{"title":"85mm \/ 1pcs","offer_id":52409668239634,"sku":"LFL2024GANGZHU4049x1","price":342.3,"currency_code":"USD","in_stock":true},{"title":"90mm \/ 1pcs","offer_id":52409668272402,"sku":"LFL2024GANGZHU4050x1","price":402.87,"currency_code":"USD","in_stock":true},{"title":"100mm \/ 1pcs","offer_id":52409668305170,"sku":"LFL2024GANGZHU4051x1","price":496.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of6_34f7f73c-f0d3-4faa-9770-3393f306fadb.jpg?v=1782142785","url":"https:\/\/homediyer.com\/products\/solid-304-stainless-steel-ball-bearings-20-100mm","provider":"HomeDIYer","version":"1.0","type":"link"}