{"product_id":"miniature-deep-groove-ball-bearings-635zz-635-2z-5x19x6mm","title":"10PCS Miniature deep groove ball bearings 635ZZ 635-2Z size 5 * 19 * 6mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e635ZZ Miniature Deep Groove Ball Bearings — Reliable Rotation for Precision Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or undersized bearing causes wobble, noise, or premature failure in your equipment, finding an exact-fit replacement matters. Hobbyists, repair technicians, and mechanical engineers who work with small motors, RC vehicles, power tools, and precision instruments rely on 635ZZ deep groove ball bearings to restore smooth, low-friction rotation without play or vibration.\u003c\/p\u003e\n\u003cp\u003eThis listing includes 10 miniature deep groove ball bearings in the 635ZZ (also marked 635-2Z) designation. Each bearing measures 5mm bore (inner diameter) × 19mm outer diameter × 6mm width. The double-Z metal shields on both sides retain grease and block contaminants, keeping the rolling elements protected during continuous operation.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacement bearings for brushless hobby motors and RC car wheel hubs, spindle support in small CNC routers and 3D printer extruder assemblies, and load-bearing pivots in inline skate wheels, fidget spinners, and hand tool mechanisms — all situations where a compact 635ZZ deep groove ball bearing must handle both radial and light axial loads reliably.\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 any application requiring a 635 \/ 635ZZ \/ 635-2Z bearing with a 5mm bore, 19mm OD, and 6mm width. Verify your bore, OD, and width before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 635ZZ Deep Groove Ball Bearings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003e10-piece pack\u003c\/strong\u003e — stock up for multiple repairs or builds in a single order, reducing downtime on ongoing projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eExact 635ZZ dimensions\u003c\/strong\u003e — 5mm bore × 19mm OD × 6mm width, matching the standard 635 series designation used across global equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eDouble metal Z-shields\u003c\/strong\u003e — both sides sealed with steel shields to retain factory grease and exclude dust, debris, and moisture from the raceway.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eDeep groove raceway design\u003c\/strong\u003e — handles radial loads as primary function and accommodates light axial (thrust) loads in either direction without additional components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eChrome steel construction\u003c\/strong\u003e — hardened bearing steel races and balls deliver consistent dimensional accuracy and resistance to fatigue under cyclic loading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eLow-friction operation\u003c\/strong\u003e — pre-greased and ready to install; suitable for moderate-speed applications in motors, wheels, and rotating shafts where smooth spin-up matters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 635ZZ Miniature Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Designation\u003c\/th\u003e\n\u003ctd\u003e635ZZ \/ 635-2Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Diameter (Bore)\u003c\/th\u003e\n\u003ctd\u003e5 mm (0.197 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003e19 mm (0.748 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e6 mm (0.236 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShield Type\u003c\/th\u003e\n\u003ctd\u003eDouble metal Z-shield (both sides)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eDeep groove ball bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eChrome steel (bearing races \u0026amp; balls)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003ePre-greased\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Direction\u003c\/th\u003e\n\u003ctd\u003eRadial (primary); light axial (both directions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDynamic Load Rating (Cr)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStatic Load Rating (C0r)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Speed\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\u003eWhat does \"635ZZ\" mean, and is it the same as 635-2Z?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — 635ZZ and 635-2Z are two common notations for the same bearing. \"635\" identifies the bearing series and dimensions (5×19×6mm). \"ZZ\" or \"2Z\" both indicate double metal shields on both sides of the bearing. You can use either designation interchangeably when sourcing replacements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I confirm this bearing fits my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure or look up three dimensions on your existing bearing or housing: bore (inner diameter), outer diameter, and width. This bearing is 5mm bore × 19mm OD × 6mm wide. If all three match, the 635ZZ is a direct fit. Also verify the shaft and housing tolerances if running at high speed or under heavy load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings suitable for RC cars and hobby motors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 635ZZ is a widely used size in RC car wheel hubs, brushless motor front\/rear shafts, and small hobby drivetrains. The metal shields protect the grease from dirt and debris common in outdoor RC use, and the deep groove design handles the combined radial and light axial loads typical of these applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these in wet or outdoor environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe Z-shields are metal (not rubber seals), so they reduce but do not fully exclude water ingress. For occasional light moisture exposure, the pre-applied grease provides adequate protection. For continuous wet or submerged conditions, look for a 635-2RS variant with rubber contact seals instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these bearings come pre-lubricated, or do I need to add grease?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese bearings are pre-greased at the factory and ready to install. For most standard applications — motors, wheels, small machinery — no additional lubrication is needed before use. If your application runs at elevated temperatures or very high speeds, consult the equipment manufacturer's lubrication specification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many bearings are included, and is this enough for a typical repair?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach pack contains 10 bearings. Most single-axis repairs or wheel replacements require 1–2 bearings per assembly. A 10-pack is practical for multi-wheel RC builds, stocking spares for ongoing maintenance, or replacing bearings across several small motors or tools in one order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"Default Title","offer_id":52409738526994,"sku":"WF126","price":12.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/10PCSMiniaturedeepgrooveballbearings635ZZ635-2Zsize5_19_6mm-Picture1of1.jpg?v=1782226401","url":"https:\/\/homediyer.com\/products\/miniature-deep-groove-ball-bearings-635zz-635-2z-5x19x6mm","provider":"HomeDIYer","version":"1.0","type":"link"}