{"product_id":"pom-plastic-deep-groove-ball-bearings","title":"POM Plastic Deep Groove Ball Bearings 603 604 605 606 607 608 609 634 635 636","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003ePOM Plastic Deep Groove Ball Bearings — Lightweight Precision for Corrosion-Prone Environments\u003c\/h2\u003e\n\u003cp\u003eWhen metal bearings corrode, seize, or add unwanted weight to your build, engineers and makers turn to POM plastic deep groove ball bearings as a reliable alternative. Whether you're designing RC vehicles, 3D printer carriages, food-contact equipment, or wet-environment mechanisms, these bearings deliver smooth rotation without the rust risk that plagues steel options.\u003c\/p\u003e\n\u003cp\u003eEach POM plastic deep groove ball bearing in this listing features a full-plastic construction — both races and cage — with inner diameters ranging from 3 mm (≈0.118 in) to 7 mm (≈0.276 in) and outer diameters from 9 mm (≈0.354 in) to 24 mm (≈0.945 in). Thickness spans 3 mm to 7 mm depending on the selected size. Available sizes include 603, 604, 605, 606, 607, 608, 609, 634, 635, and 636.\u003c\/p\u003e\n\u003cp\u003eTypical applications include 3D printer idler pulleys, RC car wheel hubs, light-duty conveyor rollers, aquatic or humid-environment assemblies, and DIY robotics joints where non-conductive or non-magnetic properties are required. These POM deep groove ball bearings for 3D printers and RC builds are a go-to choice when weight savings and corrosion resistance matter most.\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 metric bearing seats. Verify your housing bore and shaft diameter against the selected size (ID × OD × Thickness) before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These POM Plastic Deep Groove Ball Bearings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧪\u003c\/span\u003e \u003cstrong\u003eFull POM Construction\u003c\/strong\u003e\n\u003cp\u003eBoth inner and outer races are machined from polyoxymethylene (POM\/Delrin), delivering inherent corrosion resistance without any surface coating that can flake or wear away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003eSignificantly Lighter Than Steel\u003c\/strong\u003e\n\u003cp\u003ePOM density is roughly one-seventh that of steel, making these bearings ideal for weight-sensitive applications such as drone frames, RC vehicles, and portable robotics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e \u003cstrong\u003eLow-Noise Operation\u003c\/strong\u003e\n\u003cp\u003eThe plastic races dampen vibration and reduce operational noise compared to unshielded steel bearings, benefiting precision instruments and quiet-running mechanisms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003eNon-Conductive \u0026amp; Non-Magnetic\u003c\/strong\u003e\n\u003cp\u003eElectrically insulating and non-magnetic properties make these bearings suitable for electronics assemblies, MRI-adjacent equipment, and applications where stray currents or magnetic interference must be avoided.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003e10 Standard Metric Sizes\u003c\/strong\u003e\n\u003cp\u003eCovers sizes 603 through 636 with ID ranging 3–7 mm and OD ranging 9–24 mm, fitting a wide range of metric shafts and housings without custom machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eDeep Groove Raceway Design\u003c\/strong\u003e\n\u003cp\u003eThe deep groove profile handles both radial and moderate axial loads, providing versatility across rotating shaft applications without requiring separate thrust bearings for light axial forces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — POM Plastic Deep Groove Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\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\u003ePOM (Polyoxymethylene \/ Delrin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003e603, 604, 605, 606, 607, 608, 609, 634, 635, 636\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Diameter (ID)\u003c\/th\u003e\n\u003ctd\u003e3 mm – 7 mm (≈0.118 in – 0.276 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e9 mm – 24 mm (≈0.354 in – 0.945 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e3 mm – 7 mm (varies by size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVariant Dimension Format\u003c\/th\u003e\n\u003ctd\u003eID × OD × Thickness (mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Type\u003c\/th\u003e\n\u003ctd\u003eRadial + light axial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShielding\u003c\/th\u003e\n\u003ctd\u003eOpen (unshielded)\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\u003eMax Operating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically up to 90°C (194°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eInherent (no coating required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConductivity\u003c\/th\u003e\n\u003ctd\u003eNon-conductive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnetic Properties\u003c\/th\u003e\n\u003ctd\u003eNon-magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\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 the right size bearing for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bearing's inner diameter (ID) to your shaft diameter and the outer diameter (OD) to your housing bore. For example, a 608 bearing has a 7 mm ID and 22 mm OD — common in 3D printers and inline skates. Always verify both dimensions and the thickness against your design tolerances before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat load capacity can these POM bearings handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePOM plastic bearings are suited for light-to-moderate radial loads and light axial loads. They are not intended to replace steel bearings in heavy-load industrial machinery. For exact dynamic and static load ratings by size, contact us to confirm specifications for your specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings corrosion-resistant in wet or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. POM (polyoxymethylene) is inherently resistant to moisture, mild acids, and many solvents. Unlike steel bearings, these will not rust when exposed to water, making them well-suited for aquatic mechanisms, food-processing equipment, and outdoor or humid-environment builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these bearings in a 3D printer or RC vehicle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAbsolutely. The 608 size (7 mm × 22 mm × 7 mm) is one of the most common bearings in 3D printer idler pulleys and RC wheel hubs. The full POM construction reduces weight and eliminates corrosion concerns. Confirm the ID and OD match your specific printer or vehicle model's bearing seat dimensions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between sizes 607 and 636, which share the same OD?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBoth 607 and 636 have a 6 mm ID and 19 mm OD, but they originate from different bearing series with potentially different internal geometry and tolerance grades. Similarly, 608 and 636 share the same OD (22 mm) but differ in ID. Always cross-reference the full ID × OD × Thickness specification to ensure the correct fit for your housing and shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these bearings require lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePOM bearings can operate with minimal or no lubrication in many light-duty applications due to the self-lubricating properties of the material. However, for higher-speed or higher-load applications, a compatible plastic-safe grease or dry lubricant can extend service life. Avoid petroleum-based lubricants that may degrade POM over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings suitable for food-contact or medical-adjacent equipment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePOM is widely used in food-processing machinery due to its moisture resistance and non-toxic properties. However, food-grade or medical certification requirements vary by jurisdiction and application. If your project requires certified food-grade or medical-grade materials, please contact us to confirm compliance before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size (ID × OD × Thickness) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"603 (3mm x 9mm x 3mm)","offer_id":52410190430482,"sku":"GY$$$GLBZSJ056781x1","price":2.18,"currency_code":"USD","in_stock":true},{"title":"604 (4mm x 12mm x 4mm)","offer_id":52410190463250,"sku":"GY$$$GLBZSJ056782x1","price":2.18,"currency_code":"USD","in_stock":true},{"title":"605 (5mm x 14mm x 5mm)","offer_id":52410190496018,"sku":"GY$$$GLBZSJ056783x1","price":2.18,"currency_code":"USD","in_stock":true},{"title":"606 (6mm x 17mm x 6mm)","offer_id":52410190528786,"sku":"GY$$$GLBZSJ056784x1","price":2.18,"currency_code":"USD","in_stock":true},{"title":"607 (6mm x 19mm x 6mm)","offer_id":52410190561554,"sku":"GY$$$GLBZSJ056785x1","price":2.18,"currency_code":"USD","in_stock":true},{"title":"608 (7mm x 22mm x 7mm)","offer_id":52410190594322,"sku":"GY$$$GLBZSJ056786x1","price":2.04,"currency_code":"USD","in_stock":true},{"title":"609 (7mm x 24mm x 7mm)","offer_id":52410190627090,"sku":"GY$$$GLBZSJ056787x1","price":2.33,"currency_code":"USD","in_stock":true},{"title":"636 (7mm x 22mm x 7mm)","offer_id":52410190659858,"sku":"GY$$$GLBZSJ056788x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"635 (6mm x 19mm x 6mm)","offer_id":52410190692626,"sku":"GY$$$GLBZSJ056789x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"634 (5mm x 16mm x 5mm)","offer_id":52410190725394,"sku":"GY$$$GLBZSJ056790x1","price":2.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture11of11_219247c8-b85a-466d-b128-57db4ec361c5.jpg?v=1782386870","url":"https:\/\/homediyer.com\/products\/pom-plastic-deep-groove-ball-bearings","provider":"HomeDIYer","version":"1.0","type":"link"}