{"product_id":"g10-loose-ball-bearings-bike-hubs-cones-machinery","title":"G10 Ball Bearings 1\/4\" 7\/32\" 3\/16\" 5\/32\" Loose Bike Hubs Cones Machinery","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eG10 Loose Ball Bearings — Precision Steel for Bike Hubs, Cones \u0026amp; Machinery\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or pitted ball bearing causes your wheel to wobble, your bottom bracket to grind, or your industrial spindle to run rough, the fix starts with sourcing the right replacement. These G10 loose steel ball bearings are sized for cyclists, mechanics, and makers who need reliable, drop-in replacements without hunting through hardware bins for the right diameter.\u003c\/p\u003e\n\u003cp\u003eEach ball is manufactured to G10 grade tolerance from hardened carbon steel, delivering consistent roundness and surface finish across every piece in the pack. Available in four fractional inch diameters — 5\/32\" (≈3.97 mm), 3\/16\" (≈4.76 mm), 7\/32\" (≈5.56 mm), and 1\/4\" (≈6.35 mm) — with pack quantities from 10 to 300 pieces to suit single repairs or bulk stocking.\u003c\/p\u003e\n\u003cp\u003eTypical applications include loose-ball bicycle front and rear hubs, threaded cone-and-cup headsets, bottom bracket cups, vintage derailleur pivots, and light-duty machinery spindles or drawer slides requiring fractional-inch loose balls.\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 loose-ball bicycle hubs, threaded headsets, bottom bracket cups, and machinery bearing races sized for 5\/32\", 3\/16\", 7\/32\", or 1\/4\" balls. Always verify your race diameter before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These G10 Loose Ball Bearings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eG10 Grade Precision\u003c\/strong\u003e — Tight roundness and diameter tolerances ensure smooth, low-vibration rolling in cone-and-cup bearing assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eFour Fractional Diameters\u003c\/strong\u003e — 5\/32\", 3\/16\", 7\/32\", and 1\/4\" cover the most common loose-ball sizes found in road, mountain, and vintage bicycle components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eHardened Carbon Steel\u003c\/strong\u003e — Through-hardened construction resists deformation under the compressive loads typical of hub and headset bearing races.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Surface\u003c\/strong\u003e — Smooth, polished finish reduces surface oxidation and extends service life when used with appropriate bearing grease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Choose 10, 25, 50, 100, or 300 pieces — ideal for a single hub rebuild, a full bike overhaul, or workshop bulk stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eDirect Drop-In Replacement\u003c\/strong\u003e — Consistent sizing makes these a straightforward swap for worn or pitted balls in standard loose-ball bearing cups and cones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — G10 Loose Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003ctd\u003eG10\u003c\/td\u003e\n\u003c\/tr\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\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e5\/32\" (≈3.97 mm) \/ 3\/16\" (≈4.76 mm) \/ 7\/32\" (≈5.56 mm) \/ 1\/4\" (≈6.35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003ePolished \/ Bright\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e10 \/ 25 \/ 50 \/ 100 \/ 300 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardness\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Roughness\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eBicycle hubs, headsets, bottom brackets, light machinery spindles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eLoose (uncaged)\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 know which diameter to choose for my bicycle hub?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eRemove the axle and cone from your hub, then count and measure the existing balls with a digital caliper. Most road bike rear hubs use 1\/4\" balls, front hubs commonly use 3\/16\", and older or smaller hubs may use 5\/32\" or 7\/32\". When in doubt, measure — a ball that is even 0.1 mm too large will bind in the race.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these balls strong enough for loaded touring or mountain biking?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eG10 grade hardened carbon steel balls are the standard specification used in OEM loose-ball bicycle hubs worldwide. They handle the compressive loads of normal road and trail riding. For extreme downhill or heavy cargo loads, inspect and replace balls more frequently as part of routine maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these rust if I ride in wet conditions?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel balls will oxidize if left ungreased and exposed to moisture. Always pack your hub cups and cones with a waterproof bearing grease before assembly. With proper greasing and periodic regreasing, these balls perform reliably in wet-weather riding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these in machinery or industrial applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. G10 loose balls are used in light-duty machinery spindles, drawer slides, and other applications that use fractional-inch loose-ball races. Verify the race diameter and load rating of your application before use. For heavy industrial loads, consult your equipment's bearing specification sheet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many balls do I need for a typical hub rebuild?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA standard front hub typically uses 10 balls per side (20 total), and a rear hub uses 9 balls per side (18 total), though this varies by manufacturer. Check your hub's service manual or count the existing balls before ordering. The 25-piece pack covers most single-hub rebuilds with a few spares.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these compatible with threaded headsets and bottom bracket cups?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Threaded (cup-and-cone) headsets and older threaded bottom bracket cups use loose balls in the same fractional-inch sizes. 3\/16\" is the most common headset ball size; bottom brackets vary — measure your existing balls or consult the component manufacturer's spec.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between G10 and other grades like G25 or G100?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe grade number refers to the maximum allowable deviation in diameter and roundness, measured in ten-millionths of an inch. G10 is tighter than G25 or G100, meaning more consistent sizing across the pack. For bicycle and light machinery use, G10 provides a good balance of precision and value.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Item Diameter and Number of Balls above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"7\/32” \/ 10PCS","offer_id":52410675593490,"sku":"XYHJSSYX0151x10","price":1.84,"currency_code":"USD","in_stock":true},{"title":"1\/4” \/ 10PCS","offer_id":52410675626258,"sku":"XYHJSSYX0156x10","price":1.89,"currency_code":"USD","in_stock":true},{"title":"3\/16” \/ 10PCS","offer_id":52410675659026,"sku":"XYHJSSYX0141x10","price":1.99,"currency_code":"USD","in_stock":true},{"title":"5\/32” \/ 10PCS","offer_id":52410675691794,"sku":"XYHJSSYX0128x10","price":1.96,"currency_code":"USD","in_stock":true},{"title":"7\/32” \/ 25PCS","offer_id":52410675724562,"sku":"XYHJSSYX0151x25","price":2.11,"currency_code":"USD","in_stock":true},{"title":"1\/4” \/ 25PCS","offer_id":52410675757330,"sku":"XYHJSSYX0156x25","price":2.23,"currency_code":"USD","in_stock":true},{"title":"3\/16” \/ 25PCS","offer_id":52410675790098,"sku":"XYHJSSYX0141x25","price":2.5,"currency_code":"USD","in_stock":true},{"title":"5\/32” \/ 25PCS","offer_id":52410675822866,"sku":"XYHJSSYX0128x25","price":2.43,"currency_code":"USD","in_stock":true},{"title":"7\/32” \/ 50PCS","offer_id":52410675855634,"sku":"XYHJSSYX0151x50","price":2.75,"currency_code":"USD","in_stock":true},{"title":"1\/4” \/ 50PCS","offer_id":52410675888402,"sku":"XYHJSSYX0156x50","price":3.56,"currency_code":"USD","in_stock":true},{"title":"3\/16” \/ 50PCS","offer_id":52410675921170,"sku":"XYHJSSYX0141x50","price":3.35,"currency_code":"USD","in_stock":true},{"title":"5\/32” \/ 50PCS","offer_id":52410675953938,"sku":"XYHJSSYX0128x50","price":3.21,"currency_code":"USD","in_stock":true},{"title":"7\/32” \/ 100PCS","offer_id":52410675986706,"sku":"XYHJSSYX0151x100","price":4.79,"currency_code":"USD","in_stock":true},{"title":"1\/4” \/ 100PCS","offer_id":52410676019474,"sku":"XYHJSSYX0156x100","price":6.39,"currency_code":"USD","in_stock":true},{"title":"3\/16” \/ 100PCS","offer_id":52410676052242,"sku":"XYHJSSYX0141x100","price":5.51,"currency_code":"USD","in_stock":true},{"title":"5\/32” \/ 100PCS","offer_id":52410676085010,"sku":"XYHJSSYX0128x100","price":4.77,"currency_code":"USD","in_stock":true},{"title":"7\/32” \/ 300PCS","offer_id":52410676117778,"sku":"XYHJSSYX0151x300","price":12.92,"currency_code":"USD","in_stock":true},{"title":"1\/4” \/ 300PCS","offer_id":52410676150546,"sku":"XYHJSSYX0156x300","price":17.76,"currency_code":"USD","in_stock":true},{"title":"3\/16” \/ 300PCS","offer_id":52410676183314,"sku":"XYHJSSYX0141x300","price":15.08,"currency_code":"USD","in_stock":true},{"title":"5\/32” \/ 300PCS","offer_id":52410676216082,"sku":"XYHJSSYX0128x300","price":12.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of5_49888dfa-da25-4977-87d6-59097939cc8f.jpg?v=1782556550","url":"https:\/\/homediyer.com\/products\/g10-loose-ball-bearings-bike-hubs-cones-machinery","provider":"HomeDIYer","version":"1.0","type":"link"}