{"product_id":"gcr15-steel-ball-bearing-precision-solid","title":"Solid Gcr15 Steel Ball Bearing Precision Bearings 6.25 10.7 10.26 13.9 - 16.3mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGCr15 Steel Ball Bearings — Precision Solid Rolling Elements for Demanding Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or undersized ball causes vibration, noise, or premature bearing failure, engineers and maintenance technicians need a replacement they can trust to spec. These solid GCr15 chromium steel balls are precision-ground to tight tolerances, making them a reliable choice for hobbyists, machine builders, and industrial maintenance teams who cannot afford dimensional surprises.\u003c\/p\u003e\n\u003cp\u003eEach ball is machined from GCr15 bearing steel (equivalent to AISI 52100 \/ SUJ2), a through-hardened chromium alloy recognized for its uniform carbide structure and high surface hardness. Available diameters span 6.25 mm (~0.246 in) to 16.3 mm (~0.642 in), covering a wide range of standard and metric bearing bores. Surface finish is precision-ground to minimize rolling resistance and heat generation.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacing rolling elements in deep-groove ball bearings, angular-contact bearings, and linear motion systems; serving as load-transfer media in check valves and ball screws; and acting as precision spacers or pivot points in custom mechanical assemblies and DIY machine tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e Compatible with standard metric and inch-series bearing housings. Verify bore diameter and grade requirements before ordering — see variant options for available sizes.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These GCr15 Steel Ball Bearings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eGCr15 \/ 52100 Chromium Steel\u003c\/strong\u003e — Through-hardened bearing-grade alloy with a typical surface hardness of 60–66 HRC, delivering strong resistance to deformation under cyclic load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cstrong\u003eMulti-Diameter Range\u003c\/strong\u003e — Eight size options from 6.25 mm to 16.3 mm let you match the exact rolling-element diameter required without custom machining.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003ePrecision-Ground Surface\u003c\/strong\u003e — Tight sphericity and surface-finish tolerances reduce vibration and noise in assembled bearings, extending service intervals.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e — The polished steel surface resists light oxidation in dry or lightly lubricated environments; apply grease or oil for extended service in humid conditions.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eSolid One-Piece Construction\u003c\/strong\u003e — No hollow core, no seams — each ball is a single solid piece, ensuring consistent load distribution and predictable fatigue life.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eBroad Application Compatibility\u003c\/strong\u003e — Suitable for deep-groove bearings, angular-contact bearings, check valves, ball screws, and custom mechanical assemblies requiring a precision rolling element.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — GCr15 Steel Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eGCr15 Chromium Bearing Steel (equiv. AISI 52100 \/ SUJ2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eSolid, one-piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e6.25 mm, 10.26 mm, 10.7 mm, 11.4 mm, 13.9 mm, 14.6 mm, 16.1 mm, 16.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Hardness\u003c\/th\u003e\n\u003ctd\u003eTypically 60–66 HRC (through-hardened)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003ePrecision-ground; low roughness for reduced rolling resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTolerance Grade\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eModerate (suitable for dry \/ lightly lubricated environments; lubrication recommended for humid use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 pc per unit (see variant options for bulk packs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\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 ball diameter for my bearing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the existing ball with a micrometer or refer to the bearing manufacturer's datasheet. The ball diameter must match the bearing's rolling-element specification exactly — even a 0.1 mm deviation can cause noise, vibration, or accelerated wear. Select the matching size from the variant options above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is GCr15 steel, and how does it compare to standard carbon steel?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eGCr15 (equivalent to AISI 52100 \/ SUJ2) is a through-hardened chromium alloy specifically developed for rolling-contact applications. Compared to standard carbon steel, it offers higher surface hardness (typically 60–66 HRC), finer carbide distribution, and significantly better fatigue resistance under cyclic compressive loads — making it the industry standard for precision ball bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these balls suitable for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eGCr15 steel provides moderate corrosion resistance. For dry or lightly lubricated indoor applications, the polished surface performs well without additional treatment. In humid, wet, or chemically aggressive environments, apply a compatible grease or oil, or consider stainless-steel balls instead. Contact us if you need guidance on material selection for your specific conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these balls to replace rolling elements in an existing bearing assembly?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — these solid balls are designed as replacement rolling elements for standard deep-groove and angular-contact ball bearings. Confirm the required ball diameter and grade from your bearing's datasheet before ordering. If the original bearing specifies a precision grade (e.g., G10, G16, G25), contact us to confirm the grade available for your selected size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat applications are these balls NOT suitable for?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese balls are not recommended for high-temperature environments above approximately 150 °C (302 °F) without verifying heat-treatment stability, nor for strongly acidic or alkaline media without additional corrosion protection. For food-grade, medical, or highly corrosive applications, stainless-steel or ceramic balls are typically more appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow should I store unused balls to prevent rust or surface damage?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStore in a clean, dry location away from direct moisture and contaminants. Keep balls in their original packaging or a sealed container. Apply a light coat of rust-preventive oil if storing for extended periods. Avoid contact with abrasive surfaces that could scratch the precision-ground finish before installation.\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":"6.25mm \/ 1pcs","offer_id":52410416365842,"sku":"LFL2024GANGZHU4916x1","price":6.09,"currency_code":"USD","in_stock":true},{"title":"10.7mm \/ 1pcs","offer_id":52410416398610,"sku":"LFL2024GANGZHU4917x1","price":6.3,"currency_code":"USD","in_stock":true},{"title":"10.26mm \/ 1pcs","offer_id":52410416431378,"sku":"LFL2024GANGZHU4918x1","price":6.43,"currency_code":"USD","in_stock":true},{"title":"11.4mm \/ 1pcs","offer_id":52410416464146,"sku":"LFL2024GANGZHU4919x1","price":6.98,"currency_code":"USD","in_stock":true},{"title":"13.9mm \/ 1pcs","offer_id":52410416496914,"sku":"LFL2024GANGZHU4920x1","price":7.32,"currency_code":"USD","in_stock":true},{"title":"14.6mm \/ 1pcs","offer_id":52410416529682,"sku":"LFL2024GANGZHU4921x1","price":7.79,"currency_code":"USD","in_stock":true},{"title":"16.1mm \/ 1pcs","offer_id":52410416562450,"sku":"LFL2024GANGZHU4922x1","price":8.13,"currency_code":"USD","in_stock":true},{"title":"16.3mm \/ 1pcs","offer_id":52410416595218,"sku":"LFL2024GANGZHU4923x1","price":8.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-06_43bba10a-39e4-4d2b-8d23-a2a643537c7f.jpg?v=1782442636","url":"https:\/\/homediyer.com\/products\/gcr15-steel-ball-bearing-precision-solid","provider":"HomeDIYer","version":"1.0","type":"link"}