{"product_id":"national-s-128-a-c-compressor-bearing","title":"National S-128 A\/C Compressor Bearing - Front","description":"\u003ch2\u003eOverview of National A\/C Compressor Bearing S-128\u003c\/h2\u003e\u003cp\u003eThe National A\/C Compressor Bearing S-128 is engineered to provide reliable performance for a wide range of vehicles including Buick, Cadillac, Chevrolet, GMC, and Mercedes-Benz models. This needle bearing is designed to fit specific shaft and housing dimensions, ensuring precise compatibility and smooth operation within your vehicle's HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNeedle bearing type designed for A\/C compressor applications\u003c\/li\u003e\n\u003cli\u003eBore diameter of 0.7500 inches (19.05 mm) for accurate shaft fit\u003c\/li\u003e\n\u003cli\u003eHousing diameter ranges between 0.9995 and 1.0005 inches (25.3873 to 25.4127 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 1.0000 inch (25.4 mm) for secure housing placement\u003c\/li\u003e\n\u003cli\u003eWidth of 0.5000 inches (12.7 mm) to accommodate compressor assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications and Compatibility\u003c\/h2\u003e\u003cp\u003eThe S-128 A\/C compressor bearing from National features a precise bore diameter of 0.75 inches (19.05 mm) and a housing diameter tightly controlled between 0.9995 and 1.0005 inches (25.3873 to 25.4127 mm). Its outside diameter measures exactly 1.0000 inch (25.4 mm), with a width of 0.5 inches (12.7 mm), making it suitable for needle bearing applications in automotive air conditioning compressors. The shaft diameter tolerance ranges from 0.7495 to 0.75 inches (19.0373 to 19.05 mm), ensuring a snug fit on the compressor shaft. This bearing type B is designed to withstand the rotational stresses typical in HVAC compressor systems.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis A\/C compressor bearing is compatible with a broad range of vehicles, including but not limited to Buick, Cadillac, Chevrolet, GMC, Isuzu, Mercedes-Benz, Oldsmobile, Pontiac, and Volvo. It fits various models such as the Chevrolet Blazer, Camaro, Caprice, Corvette, and Silverado series, as well as Cadillac DeVille and Eldorado, Buick LeSabre and Century, and Mercedes-Benz 190E, 260E, and 300TD. The part number S-128 ensures you are selecting the correct bearing for your vehicle’s HVAC compressor assembly.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the S-128 Bearing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEliminates compressor shaft wobble and misalignment\u003c\/li\u003e\n\u003cli\u003eReduces noise caused by worn or damaged bearings\u003c\/li\u003e\n\u003cli\u003ePrevents premature compressor failure due to bearing wear\u003c\/li\u003e\n\u003cli\u003eImproves overall A\/C system efficiency and reliability\u003c\/li\u003e\n\u003cli\u003eSupports smooth rotation under high load conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National S-128 A\/C compressor bearing, ensure the shaft and housing dimensions match the specified tolerances for optimal fit. Proper lubrication is essential to extend bearing life and maintain smooth operation. Use appropriate tools to press the bearing into place without causing damage. Verify that the bearing type B matches the compressor requirements and inspect the compressor shaft for wear before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational manufactures the S-128 bearing to meet stringent quality standards for automotive HVAC components. This needle bearing is built to provide consistent performance and durability under typical operating conditions. While specific warranty details are not provided, National products generally adhere to industry standards for reliability and fitment accuracy.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43450643841205,"sku":"BCZK-S-128","price":17.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_S128_Fro_f2b9acf6-edb7-4b39-ba35-68e2a58af709.jpg?v=1774734869","url":"https:\/\/www.partcatalog.com\/products\/national-s-128-a-c-compressor-bearing","provider":"PartCatalog","version":"1.0","type":"link"}