{"product_id":"tonmp-608-2rs-8-22-7mm-ball-bearings-100-pack-double-rubber-sealed-pre-lubricated","title":"Tonmp 608-2RS 8×22×7mm Ball Bearings 100-Pack — Double Rubber-Sealed, Pre-Lubricated","description":"\u003cp\u003e\u003cstrong\u003eTonmp 100-pack 608-2RS bearings are double rubber-sealed 8×22×7mm deep-groove ball bearings built for smooth rolling and protected lubrication in wheels, skates, and small rotating assemblies.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese miniature single-row deep groove bearings come in a bulk set of 100, each constructed from carbon steel with nitrile rubber seals on both sides. The seals keep grease inside and prevent dust and moisture from entering, while the standard 608 size fits a wide range of consumer and hobby applications—everything from skate wheels to DIY robotics. The compact dimensions (8mm inner, 22mm outer, 7mm width) and simple, robust design make the 608-2RS an economical and versatile choice when you need reliable radial load support without complex installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes the 608-2RS different from open bearings?\u003c\/h3\u003e\n\u003cp\u003eThe 2RS designation means each bearing has rubber seals on both sides, which reduces maintenance and protects internal components. Unlike open bearings that require frequent relubrication and are vulnerable to contaminants, double-sealed bearings retain lubricant and extend operating life in dusty or damp environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble rubber seals lock grease in and block dirt and water.\u003c\/li\u003e\n  \u003cli\u003eCarbon steel races and balls provide strength under radial loads.\u003c\/li\u003e\n  \u003cli\u003ePre-lubricated from the factory for immediate use.\u003c\/li\u003e\n  \u003cli\u003eMinimal upkeep compared with shielded or open types.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these bearings perform in skateboards, scooters, and roller gear?\u003c\/h3\u003e\n\u003cp\u003eThe 608-2RS bearings are a common standard for many small-wheel applications, delivering steady rolling performance and resistance to grit and splashes. Their sealed construction keeps abrasive particles out of the raceway, which helps maintain smooth rotation and reduces premature wear during everyday use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits standard skateboard, scooter, and inline skate wheels (608 size).\u003c\/li\u003e\n  \u003cli\u003eSeals help prevent grit-related roughness and binding.\u003c\/li\u003e\n  \u003cli\u003eDurable carbon steel handles typical rider loads and impacts.\u003c\/li\u003e\n  \u003cli\u003eConsistent pre-lubrication supports immediate, quiet operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these bearings suitable for hobby and DIY projects?\u003c\/h3\u003e\n\u003cp\u003eYes—because of their universal size and sealed design, these bearings are popular in robotics, RC vehicles, furniture casters, and small mechanical assemblies. The single-row, deep-groove geometry supports radial loads well and simplifies integration into pulleys, wheels, and rotating mounts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard dimensions (8×22×7mm) fit common shafts and hubs.\u003c\/li\u003e\n  \u003cli\u003eSingle-row design focuses on radial load support for rotating parts.\u003c\/li\u003e\n  \u003cli\u003eBulk pack of 100 ensures spares for multiple builds or repairs.\u003c\/li\u003e\n  \u003cli\u003eCarbon steel construction balances cost with dependable strength.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I maintain these sealed bearings for best life?\u003c\/h3\u003e\n\u003cp\u003eSealed bearings require much less maintenance than open bearings, but basic care will still prolong service. Avoid high-pressure water washing and heavy contamination; when possible, keep bearings dry and free of heavy debris. If replacement becomes necessary, the 608 is a common, inexpensive size that’s easy to swap.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWipe external surfaces clean; avoid forcing water into seals.\u003c\/li\u003e\n  \u003cli\u003eReplace rather than attempt complex seal repairs if lubricant is lost.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate shaft tolerances and a gentle press fit to avoid race damage.\u003c\/li\u003e\n  \u003cli\u003eKeep spare bearings from the same batch for consistent performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Tonmp 100 PCS 608-2RS set is aimed at hobbyists, small workshop owners, and fleet users who need an economical supply of standard sealed bearings for wheels, rollers, and light mechanical assemblies. If you maintain skate fleets, build DIY robots, repair furniture casters, or need a dependable bulk source for routine replacements, this 100-pack provides matched parts that simplify inventory and keep equipment rolling.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these 608-2RS bearings pre-lubricated?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—each bearing is factory-lubricated and sealed, ready to use without immediate relubrication.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these in outdoor scooters and wet conditions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The rubber seals resist moisture and debris, making them suitable for occasional outdoor use, though heavy submersion should be avoided.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Tonmp","offers":[{"title":"Default Title","offer_id":59349550694748,"sku":"B0B4JHL5XF","price":50.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/5604\/9244\/files\/tonmp-front-packaging-608-2rs.jpg?v=1791099565","url":"https:\/\/sportium.co.uk\/products\/tonmp-608-2rs-8-22-7mm-ball-bearings-100-pack-double-rubber-sealed-pre-lubricated","provider":"Sportium Sports And Outdoors","version":"1.0","type":"link"}