{"product_id":"51100-51414-series-thrust-ball-bearings","title":"51100-51414 Series 3 Part Thrust Ball Bearings 10\/12\/15\/17\/20\/25-150mm Inner Dia","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e51100–51414 Series Thrust Ball Bearings — Axial Load Precision for Shafts \u0026amp; Machinery\u003c\/h2\u003e\n\u003cp\u003eWhen axial loads cause premature wear, misalignment, or noisy operation in rotating assemblies, the right thrust bearing makes the difference. Engineers, maintenance technicians, and DIY builders working on gearboxes, machine tool spindles, automotive steering columns, and hydraulic pump shafts rely on dimensionally accurate thrust ball bearings to keep assemblies running true under one-directional axial force.\u003c\/p\u003e\n\u003cp\u003eThese 51100–51414 series thrust ball bearings follow the ISO\/DIN standard 3-part construction: a shaft washer (tight-fit ring), a housing washer (loose-fit ring), and a ball-and-cage assembly seated between them. Available in inner diameter (bore) sizes from 10 mm (0.39 in) to 150 mm (5.91 in), with outer diameters from 24 mm to 190 mm and thickness ranging from 9 mm to 60 mm. The steel cage retains the balls evenly around the raceway, distributing axial load across all rolling elements.\u003c\/p\u003e\n\u003cp\u003eTypical applications include lathe and milling machine spindle thrust faces, automotive clutch release mechanisms, agricultural equipment pivot points, and conveyor drive shaft end-thrust management — anywhere a compact, single-direction axial load bearing is needed in a confined radial envelope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard ISO 51100–51414 series shaft and housing seats. Verify bore (I.D.), outer diameter (O.D.), and thickness against your assembly drawing before ordering. These bearings are designed for pure axial (thrust) loads; do not use as the sole support for combined radial + axial loads without a separate radial bearing.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Thrust Ball Bearings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Size Range:\u003c\/strong\u003e Inner diameters from 10 mm to 150 mm (0.39–5.91 in) cover light-duty instrument bearings through heavy industrial shaft applications in a single product family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003e3-Part Separable Design:\u003c\/strong\u003e Shaft washer, housing washer, and ball-cage assembly are fully separable, simplifying installation, inspection, and replacement without disturbing adjacent components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eSteel Ball \u0026amp; Cage Construction:\u003c\/strong\u003e Hardened steel raceways and a steel cage maintain consistent ball spacing under axial load, reducing friction and heat generation during continuous operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cstrong\u003eISO\/DIN Dimensional Compliance:\u003c\/strong\u003e Manufactured to 51100–51414 series dimensional standards, ensuring drop-in interchangeability with OEM and aftermarket housings designed to the same specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eSingle-Direction Axial Load Rating:\u003c\/strong\u003e Optimized for one-directional thrust forces — ideal for vertical shaft applications, screw jack mechanisms, and rotary table assemblies where axial load acts in a consistent direction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e\u003cstrong\u003eBroad Application Compatibility:\u003c\/strong\u003e Suited for machine tool spindles, automotive steering and clutch systems, agricultural pivot assemblies, conveyor end-thrust positions, and hydraulic pump shaft ends.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Thrust Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Series\u003c\/th\u003e\n\u003ctd\u003e51100–51414 (ISO\/DIN Standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eSingle-Direction Thrust Ball Bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003e3-Part: Shaft Washer + Housing Washer + Ball \u0026amp; Cage Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Diameter (Bore)\u003c\/th\u003e\n\u003ctd\u003e10 mm – 150 mm (0.39 in – 5.91 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003e24 mm – 190 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e9 mm – 60 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Raceways\u003c\/th\u003e\n\u003ctd\u003eHardened bearing steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCage Material\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Direction\u003c\/th\u003e\n\u003ctd\u003eAxial (single direction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eSee variant options (grease-lubricated unless otherwise noted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically –20°C to +120°C (–4°F to +248°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003eSee variant options (1 pc standard; multi-pack available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct thrust ball bearing size for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the inner diameter (I.D.) to your shaft diameter and the outer diameter (O.D.) to the available housing bore. Then confirm the thickness fits within your axial clearance envelope. Cross-reference the 51100–51414 series designation: for example, a 51205 bearing has a 25 mm bore, 47 mm O.D., and 15 mm thickness. Always verify all three dimensions against your assembly drawing before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these bearings handle both radial and axial loads simultaneously?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo. Single-direction thrust ball bearings are designed exclusively for axial (thrust) loads acting in one direction. They cannot support radial loads on their own. If your application involves combined radial and axial loading, pair this bearing with a separate deep groove or angular contact radial bearing to handle the radial component.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat lubrication do these thrust ball bearings require?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese bearings are typically supplied without pre-packed grease (open design) and should be lubricated with a lithium-based grease (NLGI Grade 2) or a suitable mineral oil before installation. Relubrication intervals depend on operating speed, temperature, and load — consult your machinery's maintenance schedule. For high-speed applications, oil lubrication is generally preferred over grease.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings corrosion-resistant for outdoor or wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStandard 51100–51414 series bearings use hardened carbon steel raceways and are not inherently corrosion-resistant. For outdoor, washdown, or humid environments, apply a compatible anti-corrosion grease and consider adding a protective shield or seal arrangement around the bearing housing. If continuous exposure to moisture or chemicals is expected, contact us to confirm suitability or discuss stainless steel alternatives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install a 3-part thrust ball bearing correctly?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe shaft washer (tight-fit ring, smaller bore) seats against the rotating shaft with a light interference or transition fit. The housing washer (loose-fit ring, larger bore) seats in the stationary housing with a clearance fit, allowing it to self-align slightly. The ball-and-cage assembly sits between the two washers. Never press on the wrong ring — always apply installation force through the ring being fitted. Ensure the shaft and housing seats are clean, burr-free, and within dimensional tolerance before assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 511xx and 514xx sub-series in this range?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eWithin the 51100–51414 series, the designation number encodes the bore size: the last two digits (multiplied by 5) give the bore in mm for sizes above 04 (e.g., 51205 = 25 mm bore). The 511xx sub-series covers smaller bore sizes (typically 10–35 mm) with relatively compact O.D. and thin cross-sections, while the 514xx sub-series covers larger bores (up to 70 mm in standard catalogues) with proportionally larger O.D. and greater thickness to handle higher axial loads. Select based on your bore size and the axial load capacity required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these bearings in a vertical shaft orientation?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — vertical shaft applications are one of the most common use cases for single-direction thrust ball bearings. In a vertical orientation, the bearing supports the weight of the rotating assembly (downward axial load). Ensure the shaft washer is on the rotating element and the housing washer is on the stationary support structure. Adequate lubrication retention is important in vertical installations; a grease-filled housing cap or oil bath arrangement is recommended to prevent lubricant migration away from the raceways.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size (I.D x O.D) and Thickness above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"10 x 24mm \/ 9mm \/ 1","offer_id":52410160382226,"sku":"GYWHLSHXJZC1518x1","price":4.09,"currency_code":"USD","in_stock":true},{"title":"12 x 26mm \/ 9mm \/ 1","offer_id":52410160414994,"sku":"GYWHLSHXJZC1519x1","price":4.09,"currency_code":"USD","in_stock":true},{"title":"15 x 28mm \/ 9mm \/ 1","offer_id":52410160447762,"sku":"GYWHLSHXJZC1520x1","price":4.13,"currency_code":"USD","in_stock":true},{"title":"17 x 30mm \/ 9mm \/ 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