{"product_id":"6900-6906-zz-2rs-deep-groove-ball-bearings","title":"6900-6906 ZZ\/2RS Deep Groove Ball Bearings Double Side Sealed Roller Bearing","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e6900–6906 ZZ \u0026amp; 2RS Deep Groove Ball Bearings — Reliable Sealing for Demanding Rotary Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or undersized bearing causes vibration, heat buildup, or premature shaft failure, finding an exact-fit replacement quickly matters. Engineers, maintenance technicians, and serious DIYers working on electric motors, power tools, bicycles, inline skates, and light industrial machinery need bearings that match precise dimensional tolerances without guesswork.\u003c\/p\u003e\n\u003cp\u003eThese deep groove ball bearings span models 6900 through 6906, covering inner diameters from 10 mm (0.39 in) to 30 mm (1.18 in), outer diameters from 22 mm (0.87 in) to 47 mm (1.85 in), and widths of 6–9 mm (0.24–0.35 in). Each bearing is available in two seal configurations: ZZ (metal shields on both sides) and 2RS (rubber contact seals on both sides), sold individually or in packs of 4, 10, or 20.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacing deep groove ball bearings in brushless DC motors and servo drives, restoring smooth rotation in skateboard and inline skate wheels, and servicing gearbox input shafts or conveyor idler rollers where a compact radial bearing with low friction is required.\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 standard 6900–6906 series deep groove ball bearing. Verify your shaft diameter, housing bore, and width before ordering. See variant options for exact dimensions.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 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\u003eTwo Seal Types Available\u003c\/strong\u003e — ZZ metal shields block coarse contaminants and suit higher-speed, lower-torque applications; 2RS rubber contact seals provide superior grease retention and dust exclusion for moderate-speed, higher-load environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eBroad Size Range in One Listing\u003c\/strong\u003e — Models 6900 through 6906 cover ID 10–30 mm and OD 22–47 mm, letting you source multiple sizes from a single supplier and reduce procurement complexity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003eLow Friction Deep Groove Design\u003c\/strong\u003e — The single-row deep groove raceway geometry supports both radial and moderate axial loads while maintaining low operating torque, reducing heat generation during continuous rotation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eDouble-Side Sealed Construction\u003c\/strong\u003e — Both ZZ and 2RS variants are sealed on both faces, protecting the grease fill and rolling elements from dust, moisture, and light splashing without requiring external sealing hardware.\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, 4, 10, or 20-piece packs so you can order a single replacement or stock a maintenance kit without overpaying for excess inventory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eStandard Series Dimensions\u003c\/strong\u003e — Manufactured to ISO 6900–6906 series dimensional standards, ensuring dimensional interchangeability with OEM and aftermarket bearings of the same model number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Deep Groove Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Series\u003c\/th\u003e\n\u003ctd\u003e6900 \/ 6901 \/ 6902 \/ 6903 \/ 6904 \/ 6905 \/ 6906\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeal Type\u003c\/th\u003e\n\u003ctd\u003eZZ (metal shield, both sides) \/ 2RS (rubber contact seal, both sides)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Diameter (ID)\u003c\/th\u003e\n\u003ctd\u003e10 mm \/ 12 mm \/ 15 mm \/ 17 mm \/ 20 mm \/ 25 mm \/ 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e22 mm \/ 24 mm \/ 28 mm \/ 30 mm \/ 37 mm \/ 42 mm \/ 47 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e6 mm \/ 6 mm \/ 7 mm \/ 7 mm \/ 9 mm \/ 9 mm \/ 9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eSingle-row deep groove ball bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Direction\u003c\/th\u003e\n\u003ctd\u003eRadial (primary) + moderate axial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eGrease-filled (factory pre-lubricated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Quantities\u003c\/th\u003e\n\u003ctd\u003e1 pc \/ 4 pcs \/ 10 pcs \/ 20 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit Weight\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 between ZZ and 2RS seal types?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eZZ bearings use rigid metal shields that do not contact the inner ring, resulting in lower friction and suitability for higher rotational speeds (typically up to 20–30% faster than 2RS at equivalent loads). Choose ZZ when operating speed is the priority and contamination is limited to coarse particles. 2RS bearings use rubber lips that contact the inner ring, providing a tighter seal against fine dust, moisture, and grease loss. Choose 2RS for outdoor equipment, wet environments, or applications where grease retention over a long service interval is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat dimensions should I measure before selecting a model number?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure three values: (1) shaft diameter — this must match the bearing inner diameter (ID) exactly; (2) housing bore — this must match the bearing outer diameter (OD) exactly; (3) available axial space — this must accommodate the bearing width. For example, if your shaft is 15 mm, your housing bore is 28 mm, and your axial space is at least 7 mm, you need a 6902 series bearing. Confirm all three dimensions before ordering to avoid fitment issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings suitable for high-speed electric motors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eDeep groove ball bearings in the 6900–6906 series are widely used in small electric motors, brushless DC motors, and servo drives. ZZ variants are generally preferred for higher-speed motor applications due to lower seal drag. The specific speed limit depends on bearing size, lubrication, and operating temperature — consult the speed ratings for your selected model if operating above 10,000 RPM.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these bearings in outdoor or wet conditions?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e2RS variants offer better moisture resistance than ZZ due to their rubber contact seals, making them more appropriate for outdoor power tools, garden equipment, and applications exposed to light water splashing. Neither ZZ nor 2RS bearings are rated for full submersion. For heavily wet or corrosive environments, consider stainless steel or ceramic hybrid bearings instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if my existing bearing needs replacement?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCommon indicators include: audible grinding, clicking, or rumbling noise during rotation; excessive radial play when the shaft is pushed side-to-side; visible rust, pitting, or discoloration on the bearing races or shields; and increased operating temperature at the bearing location. If any of these symptoms are present, replace the bearing promptly to prevent secondary damage to the shaft or housing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between buying 1 pc vs. a 10-pack or 20-pack?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSingle-piece orders are suited for one-off repairs where you need an exact replacement. Multi-pack quantities (4, 10, or 20 pcs) are cost-effective for maintenance shops, production lines, or hobbyists who service multiple units of the same equipment. Stocking a small quantity of the most common sizes reduces downtime when a bearing fails unexpectedly. The per-unit price decreases as pack quantity increases.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e\n\u003cp\u003e🛒 Select your model and quantity above, then add to cart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"6900-ZZ 10*22*6mm \/ 1pcs","offer_id":52409756746002,"sku":"GLFBNHHSHXJZC6016x1","price":7.74,"currency_code":"USD","in_stock":true},{"title":"6901-ZZ 12*24*6mm \/ 1pcs","offer_id":52409756778770,"sku":"GLFBNHHSHXJZC6017x1","price":7.6,"currency_code":"USD","in_stock":true},{"title":"6902-ZZ 15*28*7mm \/ 1pcs","offer_id":52409756811538,"sku":"GLFBNHHSHXJZC6018x1","price":7.74,"currency_code":"USD","in_stock":true},{"title":"6903-ZZ 17*30*7mm \/ 1pcs","offer_id":52409756844306,"sku":"GLFBNHHSHXJZC6019x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"6904-ZZ 20*37*9mm \/ 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