{"product_id":"39521-bearing-cup-fits-ntn","title":"39521 Bearing Cup Fits NTN","description":"\u003ch3\u003eOne New Aftermarket Replacement 39521 Bearing Cup for NTN Tapered Roller Bearings\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement 39521 bearing cup is the outer ring (cup\/race) of a single-row tapered roller bearing in the inch-series 39500 line. The cup pairs with a separately purchased cone (inner ring assembly) to form a complete tapered roller bearing capable of handling combined radial and axial loads. Common applications include axle systems, differentials, transmissions, and wheel-end assemblies on agricultural, construction, and industrial equipment.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eType: Single tapered roller bearing cup (outer ring)\u003c\/li\u003e\n\u003cli\u003eSeries: 39500 (Inch Series)\u003c\/li\u003e\n\u003cli\u003eOutside Diameter (D): 4.4375 in (112.713 mm)\u003c\/li\u003e\n\u003cli\u003eCup Width (W): 0.9375 in (23.8125 mm)\u003c\/li\u003e\n\u003cli\u003eFillet Radius: 0.03 in\u003c\/li\u003e\n\u003cli\u003eConstruction: Single cup\u003c\/li\u003e\n\u003cli\u003eLubrication Hole: None\u003c\/li\u003e\n\u003cli\u003eMaterial: Fits Case carburized steel\u003c\/li\u003e\n\u003cli\u003eFinish: Uncoated\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Cones (Sold Separately)\u003c\/h4\u003e\u003cp\u003eThis cup is used with cones including: 39578, 39580, 39581, 39585A, 39590A. Always pair with a matching cone from the same manufacturer for best results.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e39521\u003c\/p\u003e\u003ch4\u003eAftermarket Interchange Numbers\u003c\/h4\u003e\u003cp\u003eTimken 39521, SKF BR39521, BCA NB39521, National 39521, KOYO 39521, NSK 39521, FAG 39521, NACHI 39521, NTN 4T-39521\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":41151199871059,"sku":"39521-PVE","price":116.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/RAP_ComingSoon_Tractor_bd9ef137-ede2-49dd-8ee5-8b22dfc2acc0.jpg?v=1757659207","url":"https:\/\/www.reliableaftermarketparts.com\/products\/39521-bearing-cup-fits-ntn","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}