{"product_id":"625-628-stainless-steel-deep-groove-ball-bearings","title":"625-628 Stainless Steel Deep Groove Ball Bearings 5-8mm Bore 16-24mm Outer Diam","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e625–628 Stainless Steel Deep Groove Ball Bearings — Precision Fit for Small-Bore Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or undersized bearing causes wobble, noise, or premature failure in your build, finding an exact-fit replacement matters. Engineers, hobbyists, and repair technicians working on compact rotating assemblies need stainless steel deep groove ball bearings that deliver consistent radial load capacity in tight spaces — without corroding under moisture or light chemical exposure.\u003c\/p\u003e\n\u003cp\u003eThese 625–628 series deep groove ball bearings are constructed from stainless steel throughout the inner ring, outer ring, and ball complement, with a retainer cage for even ball spacing. Bore diameters range from 5 mm (0.197 in) to 8 mm (0.315 in), and outer diameters span 16 mm (0.630 in) to 24 mm (0.945 in), with widths of 5 mm to 8 mm depending on the selected size.\u003c\/p\u003e\n\u003cp\u003eTypical applications include RC car and drone motor shafts, 3D printer carriage and extruder assemblies, small power tool spindles, inline skate wheel axles, and light industrial conveyor rollers — anywhere a compact stainless steel deep groove ball bearing with low running noise 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 standard 625, 626, 627, and 628 bearing seats. Verify bore, outer diameter, and width against your housing before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Stainless Steel 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\u003eFour Size Options in One Listing\u003c\/strong\u003e — Choose from 625 (5×16×5 mm), 626 (6×19×6 mm), 627 (7×22×7 mm), or 628 (8×24×8 mm) to match your exact shaft and housing dimensions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eStainless Steel Construction\u003c\/strong\u003e — Inner ring, outer ring, and balls are stainless steel, providing solid corrosion resistance in damp, humid, or lightly corrosive environments where standard carbon steel bearings would rust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eDeep Groove Raceway Design\u003c\/strong\u003e — The deep groove geometry handles both radial and moderate axial loads in either direction, making these bearings versatile across a wide range of compact rotating assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eLow-Noise, Smooth Operation\u003c\/strong\u003e — Precision-ground raceways and evenly spaced ball complement deliver quiet, consistent rotation — important for RC vehicles, robotics, and instrumentation where vibration must be minimized.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eMetric Dimensions, Standard Series\u003c\/strong\u003e — All four sizes follow standard 6-series metric bearing dimensions, ensuring drop-in compatibility with OEM and aftermarket housings designed to ISO\/DIN specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eSold Individually — Order the Exact Quantity You Need\u003c\/strong\u003e — Each listing unit is one bearing. Select your size and quantity above to avoid over-ordering and reduce waste on repair or prototype jobs.\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\u003e625 \/ 626 \/ 627 \/ 628\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (d)\u003c\/th\u003e\n\u003ctd\u003e5 mm \/ 6 mm \/ 7 mm \/ 8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e16 mm \/ 19 mm \/ 22 mm \/ 24 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth (B)\u003c\/th\u003e\n\u003ctd\u003e5 mm \/ 6 mm \/ 7 mm \/ 8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel (rings \u0026amp; balls)\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\u003eLoad Direction\u003c\/th\u003e\n\u003ctd\u003eRadial + Moderate Axial (both directions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeal \/ Shield\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDynamic Load Rating (C)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStatic Load Rating (C₀)\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\u003ctr\u003e\n\u003cth\u003eDimension Standard\u003c\/th\u003e\n\u003ctd\u003eISO 15 \/ DIN 625\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit Sold\u003c\/th\u003e\n\u003ctd\u003e1 piece per unit\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 the 625, 626, 627, and 628 sizes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bearing to your shaft diameter: 625 fits a 5 mm shaft, 626 fits 6 mm, 627 fits 7 mm, and 628 fits 8 mm. Also confirm the outer diameter fits your housing bore and that the width clears any retaining features. Measure your existing bearing or housing with calipers before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings strong enough for my RC car or drone motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Deep groove ball bearings in the 625–628 series are widely used in RC vehicles, brushless motors, and drone frames. They handle the radial loads generated by spinning shafts and moderate axial thrust from propeller or gear reaction forces. For high-RPM drone applications, verify the speed rating matches your motor's operating RPM.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill stainless steel bearings rust or corrode?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStainless steel offers significantly better corrosion resistance than standard carbon steel bearings. These are suitable for damp environments, occasional water splash, and light chemical exposure. For continuous immersion or aggressive chemical environments, consult a bearing specialist for ceramic or fully sealed options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these compatible with 3D printer carriages and extruder assemblies?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe 625 (5×16×5 mm) is one of the most common bearings used in 3D printer extruder idlers and carriage wheels. The 626 and 627 sizes are also used in various printer frame and motion system designs. Check your printer's BOM or existing bearing markings to confirm the exact size needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between an open bearing and a shielded or sealed bearing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eOpen bearings have no cover over the raceway — they run with lower friction but require external lubrication and are exposed to contamination. Shielded bearings (suffix Z or ZZ) have metal shields that block debris. Sealed bearings (suffix RS or 2RS) use rubber contact seals for better contamination exclusion and are pre-lubricated. Check the variant options or contact us to confirm the seal type available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these bearings in inline skates or skateboard wheels?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStandard inline skate wheels use 608-size bearings (8×22×7 mm), which is a different series. However, some specialty skate frames and custom builds use 627 or 628 sizes. Measure your axle diameter and wheel hub bore carefully before purchasing to confirm fitment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many bearings do I receive per order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach unit in this listing is one (1) bearing. Select the quantity you need using the QTY selector above. Ordering the exact count you need helps avoid excess stock on small repair or prototype jobs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size (Bore × OD × Width) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"625（5x16x5mm） \/ 1","offer_id":52410502349074,"sku":"GLFBLFFSHXJZC5706x1","price":3.81,"currency_code":"USD","in_stock":true},{"title":"626（6x19x6mm） \/ 1","offer_id":52410502381842,"sku":"GLFBLFFSHXJZC5707x1","price":3.81,"currency_code":"USD","in_stock":true},{"title":"627（7x22x7mm） \/ 1","offer_id":52410502414610,"sku":"GLFBLFFSHXJZC5708x1","price":3.81,"currency_code":"USD","in_stock":true},{"title":"628（8x24x8mm） \/ 1","offer_id":52410502447378,"sku":"GLFBLFFSHXJZC5709x1","price":8.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of5_0ff5b9d1-7a69-4801-9000-95370e6c612d.jpg?v=1782452617","url":"https:\/\/homediyer.com\/products\/625-628-stainless-steel-deep-groove-ball-bearings","provider":"HomeDIYer","version":"1.0","type":"link"}