{"product_id":"composite-copper-bushing-self-lubricating-oil-free-bearing-sleeve-ptfe","title":"2-Pack PTFE Composite Copper Bushing Self-Lubricating Oil-Free Bearing","description":"\u003ch2\u003e2-Pack Composite Copper Bushing – Self-Lubricating, Oil-Free Bearing Sleeve\u003c\/h2\u003e\n\u003cp\u003eUpgrade your machinery with these precision-engineered \u003cstrong\u003ecomposite copper bushings\u003c\/strong\u003e from JARBLUE. Available in a wide range of bore sizes (16, 17, 18, 20, 22, 25, 28, 30, and 32 mm), these oil-free, self-lubricating axle sleeves deliver outstanding performance across a broad spectrum of industrial and mechanical applications — with minimal maintenance required.\u003c\/p\u003e\n\n\u003ch3\u003eMulti-Layer Material Construction\u003c\/h3\u003e\n\u003cp\u003eEach bushing is built with a sophisticated four-layer composite structure for maximum durability and performance:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLayer 1 – PTFE\/Pb Wear Surface (0.01–0.03 mm):\u003c\/strong\u003e A modified polytetrafluoroethylene (PTFE) and lead mixture forms a wear-resistant surface that creates a protective transfer film on the mating shaft during operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLayer 2 – Copper Powder Sintered Layer (0.2–0.3 mm):\u003c\/strong\u003e Enhances bonding between the PTFE\/Pb layer and steel backing, providing excellent load-bearing capacity, wear resistance, and efficient heat dissipation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLayer 3 – Low-Carbon Steel Backing (0.7–2.3 mm):\u003c\/strong\u003e Provides structural integrity, increases load capacity, and improves heat transfer throughout the bearing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLayer 4 – Copper\/Tin Anti-Corrosion Coating:\u003c\/strong\u003e A copper coating (0.008 mm) topped with a tin coating (0.005 mm) delivers excellent corrosion resistance, making these bushings suitable for use in corrosive media without rusting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Performance Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eOil-free or low-oil lubrication\u003c\/strong\u003e — ideal for hard-to-reach or maintenance-free applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWide operating temperature range:\u003c\/strong\u003e -195°C to +280°C (-319°F to +536°F)\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLow friction coefficient\u003c\/strong\u003e and long service life thanks to superior wear resistance\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eQuiet operation\u003c\/strong\u003e — low noise and no pollution during use\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eThin-wall, lightweight design\u003c\/strong\u003e — reduces overall mechanical bulk and weight\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDimensional stability\u003c\/strong\u003e — minimal water\/oil absorption and low thermal expansion coefficient\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eShaft-friendly:\u003c\/strong\u003e low shaft hardness requirements; untreated\/untempered shafts may be used, reducing manufacturing complexity\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCE Certified\u003c\/strong\u003e for quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWide Range of Applications\u003c\/h3\u003e\n\u003cp\u003eThese composite copper bushings are widely used in sliding mechanical components across many industries, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic mechanical equipment (telescopic, swing, sliding, rotating, and bending parts)\u003c\/li\u003e\n  \u003cli\u003eHydraulic cylinder guide sleeves and gear pumps\u003c\/li\u003e\n  \u003cli\u003eTextile machinery, plastic molding machines, and die casting machines\u003c\/li\u003e\n  \u003cli\u003eRubber machinery, tobacco machinery, and vending machines\u003c\/li\u003e\n  \u003cli\u003eFitness equipment and office machinery\u003c\/li\u003e\n  \u003cli\u003eHydraulic carriers, motorcycles, and automotive components\u003c\/li\u003e\n  \u003cli\u003eAgricultural and forestry machinery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e JARBLUE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 2 PCS per lot\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Composite (PTFE\/Pb + Sintered Copper + Low-Carbon Steel + Copper\/Tin Coating)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Bore Sizes (mm):\u003c\/strong\u003e 16, 17, 18, 20, 22, 25, 28, 30, 32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Self-lubricating, oil-free\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories Anti-Loosening Line Left Hand Thread Replacement Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-20mm-diamond-flat-grinding-wheel-dry-and-wet-use-heavy-duty-concrete-grinder-wheel-blue-vacuum-brazed\"\u003e10\/20mm Diamond Flat Grinding Wheel Dry and Wet Use Heavy Duty Concrete Grinder Wheel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What bore sizes are available for these composite copper bushings?\u003c\/h4\u003e\n\u003cp\u003eA: These self-lubricating composite copper bushings are available in bore sizes of 16, 17, 18, 20, 22, 25, 28, 30, and 32 mm, making them suitable for a wide variety of mechanical shaft dimensions.\u003c\/p\u003e\n\u003ch4\u003eQ: Do these bushings require regular oiling or lubrication?\u003c\/h4\u003e\n\u003cp\u003eA: No — these bushings are designed for oil-free or minimal-lubrication operation. The PTFE\/Pb composite surface layer is inherently self-lubricating, making them ideal for locations that are difficult to access for maintenance or where maintenance-free performance is desired.\u003c\/p\u003e\n\u003ch4\u003eQ: What temperature range can these copper bushings handle?\u003c\/h4\u003e\n\u003cp\u003eA: These composite copper bushings are engineered to operate reliably across an extremely wide temperature range, from -195°C (-319°F) up to +280°C (+536°F), making them suitable for demanding industrial environments.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these bushings resistant to corrosion?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. Each bushing features a copper\/tin anti-corrosion coating (copper at 0.008 mm, tin at 0.005 mm) applied to the steel backing, providing robust resistance to corrosion even when used in corrosive media environments.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What bore sizes are available for these composite copper bushings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These self-lubricating composite copper bushings are available in bore sizes of 16, 17, 18, 20, 22, 25, 28, 30, and 32 mm, making them suitable for a wide variety of mechanical shaft dimensions.\"}}, {\"@type\": \"Question\", \"name\": \"Do these bushings require regular oiling or lubrication?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — these bushings are designed for oil-free or minimal-lubrication operation. 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