{"product_id":"plastic-shaft-sleeves-bushings-liners","title":"Plastic Shaft Sleeves, Bearing Liners \u0026 Polymer Bushings for Industrial Equipment","description":"\u003ch3\u003ePlastic Shaft Sleeves, Bearing Liners \u0026amp; Polymer Bushings for Industrial Equipment\u003c\/h3\u003e\n\u003cp\u003eKaybin manufactures plastic shaft sleeves, polymer bushings and composite bearing liners for industrial rotating equipment where corrosion resistance, controlled wear and dry-running performance are required. These sleeves are precision machined to drawing or  sample for use in pumps, conveyors, agitators, marine systems and heavy-duty OEM assemblies across South Africa and Africa.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBoundary control:\u003c\/strong\u003e This page covers industrial polymer sleeves and liners only — not automotive cylinder liners or engine wet sleeves.\u003c\/p\u003e\n\u003ch4\u003eHigh-Intent Application Coverage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePump shaft wear sleeves\u003c\/li\u003e\n\u003cli\u003eConveyor shaft sleeves\u003c\/li\u003e\n\u003cli\u003eAgitator shaft sleeves\u003c\/li\u003e\n\u003cli\u003eMarine shaft sleeves\u003c\/li\u003e\n\u003cli\u003eBearing liners and composite sleeve bushings\u003c\/li\u003e\n\u003cli\u003eSpacer sleeves and alignment sleeves\u003c\/li\u003e\n\u003cli\u003ePolymer shaft bushings for mining equipment\u003c\/li\u003e\n\u003cli\u003eDry-running shaft sleeves for contaminated environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsed where bronze bushes, coated shafts or metal sleeves fail due to corrosion, galling or lubrication breakdown.\u003c\/p\u003e\n\u003ch4\u003eSleeve Configurations \u0026amp; Hardware Interface Options\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eKaybin manufactures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlain shaft sleeves\u003c\/li\u003e\n\u003cli\u003eFlanged sleeves\u003c\/li\u003e\n\u003cli\u003eSplit shaft sleeves (for in-situ removal)\u003c\/li\u003e\n\u003cli\u003eGrooved shaft liners\u003c\/li\u003e\n\u003cli\u003eKeyway shaft sleeves\u003c\/li\u003e\n\u003cli\u003eAnti-rotation feature sleeves\u003c\/li\u003e\n\u003cli\u003eLubrication groove sleeves\u003c\/li\u003e\n\u003cli\u003ePress-fit polymer sleeves\u003c\/li\u003e\n\u003cli\u003eBonded or polyurethane-coated sleeves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRetention methods reviewed:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInterference fit polymer sleeve\u003c\/li\u003e\n\u003cli\u003eRunning clearance shaft sleeve\u003c\/li\u003e\n\u003cli\u003eMechanical locking features\u003c\/li\u003e\n\u003cli\u003eAnti-spin configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eEngineering Performance \u0026amp; Design Considerations\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eRadial Load \u0026amp; PV Consideration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMaterial selection accounts for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAllowable radial load for plastic sleeves\u003c\/li\u003e\n\u003cli\u003eSurface speed limits for polymer sleeves\u003c\/li\u003e\n\u003cli\u003ePV value (pressure × velocity) plastic bearing performance\u003c\/li\u003e\n\u003cli\u003eShaft sleeve wear rate in service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFit \u0026amp; Clearance Engineering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesign review includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSleeve wall thickness calculation\u003c\/li\u003e\n\u003cli\u003eInterference fit tolerance band\u003c\/li\u003e\n\u003cli\u003eRunning clearance selection\u003c\/li\u003e\n\u003cli\u003ePress-fit guideline reference\u003c\/li\u003e\n\u003cli\u003eThermal expansion (polymer vs steel shaft)\u003c\/li\u003e\n\u003cli\u003eMoisture absorption dimensional shift (nylon)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSurface Finish Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eShaft finish is evaluated in relation to dry-running performance, wear behaviour and friction characteristics.\u003c\/p\u003e\n\u003ch4\u003eMaterial Options \u0026amp; Behaviour\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eNylon Sleeves (PA6 \/ PA66 – natural \u0026amp; glass-filled)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh load capacity\u003c\/li\u003e\n\u003cli\u003eGood fatigue resistance\u003c\/li\u003e\n\u003cli\u003eMoisture absorption managed in clearance design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAcetal \/ POM Sleeves (Delrin-type)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent dimensional stability\u003c\/li\u003e\n\u003cli\u003eLower moisture absorption than nylon\u003c\/li\u003e\n\u003cli\u003eSuitable for tighter tolerance sleeve applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUHMWPE Sleeves\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVery low friction\u003c\/li\u003e\n\u003cli\u003eHigh abrasion resistance\u003c\/li\u003e\n\u003cli\u003eCommon in conveyor and bulk handling duty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePTFE Sleeves (Virgin \u0026amp; Filled)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtremely low coefficient of friction\u003c\/li\u003e\n\u003cli\u003eHigh chemical resistance\u003c\/li\u003e\n\u003cli\u003eLower load capacity than nylon\/acetal (application reviewed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePolyurethane Sleeves (PU Elastomer)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShock absorption and vibration damping\u003c\/li\u003e\n\u003cli\u003eImpact-resistant sleeve applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFinal material selection depends on radial load, PV limits, speed, environment and lubrication conditions.\u003c\/p\u003e","brand":"kaybin","offers":[{"title":"Default Title","offer_id":45264094855340,"sku":null,"price":0.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4790\/6476\/files\/kaybin-plastic-sleeves-bearing-liners-custom-machined-south-africa_webp.webp?v=1769078001","url":"https:\/\/kaybin.co.za\/products\/plastic-shaft-sleeves-bushings-liners","provider":"Kaybin","version":"1.0","type":"link"}