{"product_id":"solid-steel-precision-bearing-balls","title":"Solid Steel Balls Bearing Precision Bearings 10.319 11.5 11.9 12.3 12.5 12.7mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eSolid Steel Precision Bearing Balls — Consistent Roundness for Smooth Rolling Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a loose or undersized ball causes wobble, noise, or premature wear in a bearing seat, the fix starts with sourcing the right diameter. DIYers rebuilding wheel hubs, machinists fitting custom housings, and hobbyists assembling linear slides all share the same frustration: generic balls that are slightly off-spec and ruin the fit. These solid steel precision bearing balls are sized to tight tolerances so they seat correctly the first time.\u003c\/p\u003e\n\u003cp\u003eEach ball is machined from hardened carbon steel and is available in eight diameters ranging from 10.319 mm (~0.406 in) to 12.7 mm (exactly 0.500 in). The range covers both metric and fractional inch standards, including the common 10.319 mm (13\/32\"), 11.113 mm (7\/16\"), 11.906 mm (15\/32\"), and 12.7 mm (1\/2\") sizes. Packing options of 1, 5, 10, and 50 pieces let you order a single replacement or stock up for a project run.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacing worn balls in deep-groove radial bearings, filling ball-detent mechanisms in jigs and fixtures, acting as check-ball valves in hydraulic or pneumatic circuits, and serving as load-transfer elements in custom linear guides. The consistent surface finish reduces friction and extends service life in any of these solid steel bearing ball applications.\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 Fits standard bearing housings and races designed for the selected diameter. Verify your housing bore and race groove radius before ordering. Fractional-inch equivalents: 10.319 mm = 13\/32\", 11.113 mm = 7\/16\", 11.906 mm = 15\/32\", 12.7 mm = 1\/2\".\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Solid Steel Precision Bearing Balls\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight diameter options:\u003c\/strong\u003e 10.319, 10.5, 11.113, 11.5, 11.906, 12.3, 12.5, and 12.7 mm — covering both metric and fractional-inch standards in a single product listing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened carbon steel construction:\u003c\/strong\u003e Provides the surface hardness needed to resist deformation under radial and axial loads in bearing and detent applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTight spherical tolerance:\u003c\/strong\u003e Consistent roundness and diameter accuracy ensure even load distribution and smooth rotation within the race or housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth surface finish:\u003c\/strong\u003e Reduces rolling friction and minimizes wear on mating surfaces, extending the service interval of the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible pack quantities:\u003c\/strong\u003e Choose 1, 5, 10, or 50 pieces — single-unit replacement or bulk stock for production and repair runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad application range:\u003c\/strong\u003e Suitable for radial bearings, ball-detent mechanisms, check-ball valves, linear guides, and other precision rolling-element assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Solid Steel Bearing Balls\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHardened carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eSmooth ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e10.319 mm – 12.7 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Options\u003c\/th\u003e\n\u003ctd\u003e10.319 mm, 10.5 mm, 11.113 mm, 11.5 mm, 11.906 mm, 12.3 mm, 12.5 mm, 12.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFractional Equivalents\u003c\/th\u003e\n\u003ctd\u003e13\/32\", 7\/16\", 15\/32\", 1\/2\" (selected sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 pc, 5 pcs, 10 pcs, 50 pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBall Type\u003c\/th\u003e\n\u003ctd\u003eSolid (no hollow core)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Application\u003c\/th\u003e\n\u003ctd\u003eRadial bearings, detent mechanisms, check valves, linear guides\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\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 correct diameter for my bearing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the inner diameter of your bearing race or housing bore with a caliper. The ball diameter should match the race groove radius — typically the ball OD equals the bore diameter of the housing it seats in. If you are replacing existing balls, measure one of the originals directly. For fractional-inch bearings, note that 12.7 mm = 1\/2\", 11.113 mm = 7\/16\", and 10.319 mm = 13\/32\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these balls hardened, and what load can they handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, the balls are made from hardened carbon steel. Exact load ratings depend on the bearing assembly design (race geometry, number of balls, cage type) rather than the ball alone. For critical load-bearing applications, consult your bearing housing specification and confirm the dynamic and static load ratings of the full assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these balls rust if used in a damp environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel is susceptible to surface oxidation in humid or wet conditions. For outdoor, washdown, or submerged applications, apply a light machine oil or grease after installation, or consider stainless steel balls instead. In sealed bearing housings with adequate grease, carbon steel balls perform reliably in typical workshop environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these in a standard deep-groove radial bearing (e.g., 6200 series)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese balls are sized to match common bearing diameters, but standard 6200-series bearings are factory-assembled with matched ball sets. These balls are best suited for replacing individual balls in open bearings, filling custom housings, or use in detent and valve applications where a precise diameter is needed. Verify the ball diameter against your specific bearing's ball complement specification before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 10.319 mm and 10.5 mm options?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e10.319 mm (13\/32\") is a fractional-inch standard size used in many North American bearing designs, while 10.5 mm is a metric size. They are not interchangeable — using the wrong diameter will result in excessive play or an inability to seat the ball. Always match the ball to the specification of your housing or race.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many balls should I order for a repair or project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor a single bearing replacement, the 1-piece or 5-piece pack is usually sufficient — most small-to-medium radial bearings use between 6 and 12 balls. For a production run, fixture build, or stocking a repair kit, the 10-piece or 50-piece pack offers a lower per-unit cost. Select your pack quantity from the Packing Qty option above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre the 50-piece packs all the same diameter, or mixed?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach pack contains balls of a single diameter — the one you select from the Diameter option. Packs are not mixed. If you need multiple diameters, add each diameter as a separate line item to your cart.\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":"10.319mm \/ 1pcs","offer_id":52409673449746,"sku":"LFL2024GANGZHU4133x1","price":3.6,"currency_code":"USD","in_stock":true},{"title":"10.5mm \/ 1pcs","offer_id":52409673482514,"sku":"LFL2024GANGZHU4134x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"11.113mm \/ 1pcs","offer_id":52409673515282,"sku":"LFL2024GANGZHU4135x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"11.5mm \/ 1pcs","offer_id":52409673548050,"sku":"LFL2024GANGZHU4136x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"11.906mm \/ 1pcs","offer_id":52409673580818,"sku":"LFL2024GANGZHU4137x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"12.3mm \/ 1pcs","offer_id":52409673613586,"sku":"LFL2024GANGZHU4138x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"12.5mm \/ 1pcs","offer_id":52409673646354,"sku":"LFL2024GANGZHU4139x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"12.7mm \/ 1pcs","offer_id":52409673679122,"sku":"LFL2024GANGZHU4140x1","price":3.71,"currency_code":"USD","in_stock":true},{"title":"10.319mm \/ 5pcs","offer_id":52409673711890,"sku":"LFL2024GANGZHU4133x5","price":3.94,"currency_code":"USD","in_stock":true},{"title":"10.5mm \/ 5pcs","offer_id":52409673744658,"sku":"LFL2024GANGZHU4134x5","price":4.05,"currency_code":"USD","in_stock":true},{"title":"11.113mm \/ 5pcs","offer_id":52409673777426,"sku":"LFL2024GANGZHU4135x5","price":3.94,"currency_code":"USD","in_stock":true},{"title":"11.5mm \/ 5pcs","offer_id":52409673810194,"sku":"LFL2024GANGZHU4136x5","price":4.11,"currency_code":"USD","in_stock":true},{"title":"11.906mm \/ 5pcs","offer_id":52409673842962,"sku":"LFL2024GANGZHU4137x5","price":4.39,"currency_code":"USD","in_stock":true},{"title":"12.3mm \/ 5pcs","offer_id":52409673875730,"sku":"LFL2024GANGZHU4138x5","price":4.62,"currency_code":"USD","in_stock":true},{"title":"12.5mm \/ 5pcs","offer_id":52409673908498,"sku":"LFL2024GANGZHU4139x5","price":4.8,"currency_code":"USD","in_stock":true},{"title":"12.7mm \/ 5pcs","offer_id":52409673941266,"sku":"LFL2024GANGZHU4140x5","price":4.98,"currency_code":"USD","in_stock":true},{"title":"10.319mm \/ 10pcs","offer_id":52409673974034,"sku":"LFL2024GANGZHU4133x10","price":5.14,"currency_code":"USD","in_stock":true},{"title":"10.5mm \/ 10pcs","offer_id":52409674006802,"sku":"LFL2024GANGZHU4134x10","price":5.66,"currency_code":"USD","in_stock":true},{"title":"11.113mm \/ 10pcs","offer_id":52409674039570,"sku":"LFL2024GANGZHU4135x10","price":6.12,"currency_code":"USD","in_stock":true},{"title":"11.5mm \/ 10pcs","offer_id":52409674072338,"sku":"LFL2024GANGZHU4136x10","price":6.64,"currency_code":"USD","in_stock":true},{"title":"11.906mm \/ 10pcs","offer_id":52409674105106,"sku":"LFL2024GANGZHU4137x10","price":7.15,"currency_code":"USD","in_stock":true},{"title":"12.3mm \/ 10pcs","offer_id":52409674137874,"sku":"LFL2024GANGZHU4138x10","price":7.72,"currency_code":"USD","in_stock":true},{"title":"12.5mm \/ 10pcs","offer_id":52409674170642,"sku":"LFL2024GANGZHU4139x10","price":8.06,"currency_code":"USD","in_stock":true},{"title":"12.7mm \/ 10pcs","offer_id":52409674203410,"sku":"LFL2024GANGZHU4140x10","price":8.42,"currency_code":"USD","in_stock":true},{"title":"10.319mm \/ 50pcs","offer_id":52409674236178,"sku":"LFL2024GANGZHU4133x50","price":18.18,"currency_code":"USD","in_stock":true},{"title":"10.5mm \/ 50pcs","offer_id":52409674268946,"sku":"LFL2024GANGZHU4134x50","price":20.44,"currency_code":"USD","in_stock":true},{"title":"11.113mm \/ 50pcs","offer_id":52409674301714,"sku":"LFL2024GANGZHU4135x50","price":22.44,"currency_code":"USD","in_stock":true},{"title":"11.5mm \/ 50pcs","offer_id":52409674334482,"sku":"LFL2024GANGZHU4136x50","price":22.6,"currency_code":"USD","in_stock":true},{"title":"11.906mm \/ 50pcs","offer_id":52409674367250,"sku":"LFL2024GANGZHU4137x50","price":24.81,"currency_code":"USD","in_stock":true},{"title":"12.3mm \/ 50pcs","offer_id":52409674400018,"sku":"LFL2024GANGZHU4138x50","price":27.31,"currency_code":"USD","in_stock":true},{"title":"12.5mm \/ 50pcs","offer_id":52409674432786,"sku":"LFL2024GANGZHU4139x50","price":28.86,"currency_code":"USD","in_stock":true},{"title":"12.7mm \/ 50pcs","offer_id":52409674465554,"sku":"LFL2024GANGZHU4140x50","price":30.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture4of6_894a995e-5a67-4218-bb6c-1649a5b48804.jpg?v=1782144037","url":"https:\/\/homediyer.com\/products\/solid-steel-precision-bearing-balls","provider":"HomeDIYer","version":"1.0","type":"link"}