{"product_id":"hitachi-4438771-bushing-hitachi-excavator-parts-hit-4438771","title":"Hitachi 4438771 Bushing | Hitachi Excavator Parts","description":"\u003cdiv\u003e \u003cp\u003eThe 4438771 bushing is a high-quality replacement part designed for use in Hitachi machinery. With its exceptional durability and performance, this bushing ensures reliable operation and extended service life.\u003c\/p\u003e \u003cp\u003eEngineered to meet the highest industry standards, this bushing is built to withstand heavy loads, extreme temperatures, and harsh operating conditions. It provides crucial support and stability to various components, preventing excessive wear and tear.\u003c\/p\u003e \u003cp\u003eDesigned specifically for Hitachi equipment, this bushing guarantees a perfect fit, allowing for easy installation and hassle-free maintenance. Its precise dimensions and exceptional craftsmanship ensure optimal performance and functionality.\u003c\/p\u003e \u003cp\u003eMade from top-grade materials, this bushing offers exceptional strength and resistance to corrosion, ensuring long-lasting performance even in demanding environments. Its superior construction and reliable design make it an ideal choice for professionals and diy enthusiasts alike.\u003c\/p\u003e \u003cp\u003eWhether you are replacing a worn-out bushing or performing routine maintenance, the 4438771 bushing is the perfect solution. Trust in its quality and performance to keep your Hitachi machinery operating at its best.\u003c\/p\u003e \u003cp\u003ePlease note that the\u003c\/p\u003e \u003c\/div\u003e \u003chr\u003e \u003ch2\u003eHitachi 4438771 Bushing Specifications \u0026amp; Fitment\u003c\/h2\u003e \u003cp\u003e\u003cstrong\u003eWhat it is:\u003c\/strong\u003e Heavy-equipment bushing designed for tight-tolerance pivot joints where wear control and alignment matter.\u003c\/p\u003e \u003cul\u003e   \u003cli\u003e \u003cstrong\u003ePart number:\u003c\/strong\u003e 4438771\u003c\/li\u003e   \u003cli\u003e \u003cstrong\u003eSKU:\u003c\/strong\u003e HIT-4438771\u003c\/li\u003e   \u003cli\u003e \u003cstrong\u003eTypical use:\u003c\/strong\u003e Boom\/arm\/bucket linkages, work equipment pivots, and high-wear joints.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eKey measurements to confirm\u003c\/h3\u003e \u003cp\u003eTo ensure correct fit, match the following measurements to your machineTMs worn component or OEM spec:\u003c\/p\u003e \u003cul\u003e   \u003cli\u003e \u003cstrong\u003eInside Diameter (ID):\u003c\/strong\u003e ___\u003c\/li\u003e   \u003cli\u003e \u003cstrong\u003eOutside Diameter (OD):\u003c\/strong\u003e ___\u003c\/li\u003e   \u003cli\u003e \u003cstrong\u003eOverall Length:\u003c\/strong\u003e ___\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eQuality notes\u003c\/h3\u003e \u003cul\u003e   \u003cli\u003eDesigned for consistent clearance and long service life when installed with proper lubrication.\u003c\/li\u003e   \u003cli\u003eReplace pins and bushings as a set when wear is uneven to prevent premature failure.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInstallation tip\u003c\/h3\u003e \u003cp\u003eMeasure the bore, pin, and bushing after press-fit. Use proper tooling and lubrication, and re-check end-play after assembly.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eNeed help confirming dimensions?\u003c\/em\u003e Send your machine model and the measurements above and weTMll verify fitment.\u003c\/p\u003e \u003ch3\u003eKomatsu maintenance notes (quick guide)\u003c\/h3\u003e \u003cul\u003e   \u003cli\u003e \u003cstrong\u003eEarly-life greasing:\u003c\/strong\u003e For excavators, Komatsu guidance calls for greasing work equipment pins every 10 hours for the first 50 hours, and greasing again after water work.\u003c\/li\u003e   \u003cli\u003e \u003cstrong\u003eClearance control:\u003c\/strong\u003e Komatsu linkage manuals commonly specify pinbushing clearance targets and a typical service limit around 1.0 mm for many joints, often managed with shims.\u003c\/li\u003e   \u003cli\u003e \u003cstrong\u003eTracked machines:\u003c\/strong\u003e For undercarriage track joints, pin\/bushing turning is condition- and wear-window dependent; abrasive sites can accelerate wear substantially.\u003c\/li\u003e \u003c\/ul\u003e","brand":"WQC","offers":[{"title":"Default Title","offer_id":42730512679008,"sku":"HIT-4438771","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/2922\/4032\/files\/komatsu-parts-worldwide.png?v=1769344708","url":"https:\/\/wqcparts.com\/es-mx\/products\/hitachi-4438771-bushing-hitachi-excavator-parts-hit-4438771","provider":"WQC PARTS","version":"1.0","type":"link"}