{"product_id":"thrust-ball-bearings-51100-51128-all-sizes","title":"Thrust Ball Bearings 51100 - 51128 - ALL SIZES","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eThrust Ball Bearings 51100–51128 — Axial Load Precision for Machinery \u0026amp; Industrial Applications\u003c\/h2\u003e\n\u003cp\u003eWhen your rotating shaft assembly demands reliable axial load management — whether in a gearbox, hydraulic pump, or vertical motor mount — selecting the wrong bearing means premature failure, vibration, and costly downtime. Engineers, maintenance technicians, and DIY builders who need a single-direction thrust ball bearing in a verified standard size will find this range covers the full 51100-series spectrum in one place.\u003c\/p\u003e\n\u003cp\u003eThis listing covers 24 standard sizes of the 51100-series thrust ball bearing, from the compact \u003cstrong\u003e51100 (10mm bore × 24mm OD × 9mm height)\u003c\/strong\u003e up to the heavy-duty \u003cstrong\u003e51128 (140mm bore × 180mm OD × 31mm height)\u003c\/strong\u003e. Each bearing consists of two hardened steel washers (shaft washer and housing washer) and a steel ball-and-cage assembly. The rolling elements are manufactured to dimensional tolerances consistent with ISO 492 \/ DIN 711 standards.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include: \u003cstrong\u003evertical shaft thrust management\u003c\/strong\u003e in industrial pumps and compressors, \u003cstrong\u003erotary table and indexing fixture\u003c\/strong\u003e applications in machine tools, and \u003cstrong\u003eautomotive steering column and clutch release\u003c\/strong\u003e assemblies where single-direction axial loads must be isolated from radial forces. These thrust ball bearings for machinery are also widely used in agricultural equipment pivot points and crane hook swivel assemblies.\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 Note:\u003c\/strong\u003e These bearings follow the ISO 355 \/ DIN 711 dimensional standard. Verify bore diameter (d), outer diameter (D), and height (H) against your housing and shaft specifications before ordering. Select your exact size from the variant dropdown above.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Thrust Ball Bearings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cp\u003e\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eFull 51100-Series Coverage\u003c\/strong\u003e — 24 sizes from 51100 to 51128 in a single listing; bore diameters range from 10 mm (0.39 in) to 140 mm (5.51 in), eliminating the need to source from multiple suppliers.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003eSingle-Direction Axial Load Design\u003c\/strong\u003e — Flat-washer construction transmits thrust loads along the shaft axis in one direction; not intended for combined radial + axial loading, ensuring correct load path and extended service life.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"hdiy-icon\"\u003e🔵\u003c\/span\u003e \u003cstrong\u003eHardened Steel Ball \u0026amp; Washer Assembly\u003c\/strong\u003e — Shaft washer, housing washer, and ball-and-cage complement are produced from through-hardened bearing steel, providing consistent surface hardness and wear resistance across the contact zone.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eISO 492 \/ DIN 711 Dimensional Compliance\u003c\/strong\u003e — Bore, OD, and height dimensions conform to internationally recognized standards, making these bearings interchangeable with other 51100-series components from any ISO-compliant source.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e \u003cstrong\u003eWide Industrial \u0026amp; Mechanical Application Range\u003c\/strong\u003e — Suited for pumps, compressors, rotary tables, machine tool spindles, steering assemblies, and agricultural pivot points where axial thrust isolation is required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eSold Individually — Exact Size Selection\u003c\/strong\u003e — Each order is for one (1) bearing of the selected size. Choose your precise bore × OD × height combination from the variant menu to avoid mis-shipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 51100-Series 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 (single-direction thrust ball bearing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003ctd\u003eISO 492 \/ DIN 711\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (d) Range\u003c\/th\u003e\n\u003ctd\u003e10 mm – 140 mm (0.39 in – 5.51 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D) Range\u003c\/th\u003e\n\u003ctd\u003e24 mm – 180 mm (0.94 in – 7.09 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight (H) Range\u003c\/th\u003e\n\u003ctd\u003e9 mm – 31 mm (0.35 in – 1.22 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003e51100, 51101, 51102, 51103, 51104, 51105, 51106, 51107, 51108, 51109, 51110, 51111, 51112, 51113, 51114, 51115, 51116, 51117, 51118, 51120, 51122, 51124, 51126, 51128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Direction\u003c\/th\u003e\n\u003ctd\u003eSingle-direction axial (thrust) only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRolling Element\u003c\/th\u003e\n\u003ctd\u003eSteel balls with cage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWasher Material\u003c\/th\u003e\n\u003ctd\u003eThrough-hardened bearing steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication (as supplied)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDynamic Load Rating (C)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStatic Load Rating (C₀)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Operating Speed\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\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 size from the 51100–51128 range?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bearing's bore diameter (d) to your shaft diameter, the outer diameter (D) to your housing seat, and the height (H) to your available axial space. All three dimensions are listed in each variant name (e.g., 51106 = 30 mm bore × 47 mm OD × 11 mm height). If your shaft is metric and falls between listed sizes, always size up to the next available bore to avoid interference fit issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these thrust ball bearings handle radial (side) loads?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo. The 51100-series is a single-direction \u003cem\u003ethrust\u003c\/em\u003e bearing designed exclusively for axial loads acting along the shaft axis. Applying radial loads to this bearing type causes rapid washer and ball wear. If your application involves combined axial and radial loading, consider a deep-groove ball bearing or angular contact bearing instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat material are the washers and balls made from?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBoth the shaft washer and housing washer are produced from through-hardened bearing steel (typically equivalent to 100Cr6 \/ GCr15 grade), which provides the surface hardness needed to resist brinelling under static thrust loads. The balls are also bearing-grade steel. This construction does not include stainless steel or ceramic options in this listing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings corrosion-resistant for wet or outdoor environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStandard 51100-series bearings use carbon bearing steel, which is not inherently corrosion-resistant. For wet, humid, or mildly corrosive environments, apply a compatible grease or oil lubricant and consider periodic relubrication. For highly corrosive or food-grade environments, a stainless-steel thrust bearing (not this listing) would be more appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these bearings conform to ISO or DIN standards?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 51100-series dimensions follow ISO 492 and DIN 711 standards, meaning bore, OD, and height are interchangeable with any other ISO-compliant 51100-series bearing. This makes them suitable as direct replacements in existing machinery without housing or shaft modification, provided the size designation matches exactly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many bearings are included per order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach order includes one (1) individual bearing of the size you select from the variant dropdown. If you need multiple pieces, simply increase the quantity in your cart. Bulk pricing inquiries for larger quantities are welcome — use the contact form on our site.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat lubrication should I use for these thrust ball bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor most industrial and mechanical applications, a lithium-based grease (NLGI Grade 2) is suitable. For high-speed applications, a light mineral oil or low-viscosity grease reduces heat buildup. Avoid mixing incompatible grease types. Apply lubricant to the ball-and-cage assembly and both washer faces before installation, and re-lubricate at intervals appropriate to your operating speed and load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your bearing size above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"51100 10mmx24mmx9mm","offer_id":52409865044242,"sku":"GYQJLSHXJZC1518x1","price":2.16,"currency_code":"USD","in_stock":true},{"title":"51101 12mmx26mmx9mm","offer_id":52409865077010,"sku":"GYQJLSHXJZC1519x1","price":2.16,"currency_code":"USD","in_stock":true},{"title":"51102 15mmx28mmx9mm","offer_id":52409865109778,"sku":"GYQJLSHXJZC1520x1","price":2.16,"currency_code":"USD","in_stock":true},{"title":"51103 17mmx30mmx9mm","offer_id":52409865142546,"sku":"GYQJLSHXJZC1521x1","price":2.24,"currency_code":"USD","in_stock":true},{"title":"51104 20mmx35mmx10mm","offer_id":52409865175314,"sku":"GYQJLSHXJZC1522x1","price":2.57,"currency_code":"USD","in_stock":true},{"title":"51105 25mmx42mmx11mm","offer_id":52409865208082,"sku":"GYQJLSHXJZC1523x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"51106 30mmx47mmx11mm","offer_id":52409865240850,"sku":"GYQJLSHXJZC1524x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"51107 35mmx52mmx12mm","offer_id":52409865273618,"sku":"GYQJLSHXJZC1525x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"51108 40mmx60mmx13mm","offer_id":52409865306386,"sku":"GYQJLSHXJZC1534x1","price":5.97,"currency_code":"USD","in_stock":true},{"title":"51109 45mmx65mmx14mm","offer_id":52409865339154,"sku":"GYQJLSHXJZC1535x1","price":7.06,"currency_code":"USD","in_stock":true},{"title":"51110 50mmx70mmx14mm","offer_id":52409865371922,"sku":"GYQJLSHXJZC1536x1","price":7.47,"currency_code":"USD","in_stock":true},{"title":"51111 55mmx78mmx16mm","offer_id":52409865404690,"sku":"GYQJLSHXJZC1537x1","price":10.46,"currency_code":"USD","in_stock":true},{"title":"51112 60mmx85mmx17mm","offer_id":52409865437458,"sku":"GYQJLSHXJZC1538x1","price":12.09,"currency_code":"USD","in_stock":true},{"title":"51113 65mmx90mmx18mm","offer_id":52409865470226,"sku":"GYQJLSHXJZC1539x1","price":14.21,"currency_code":"USD","in_stock":true},{"title":"51114 70mmx95mmx18mm","offer_id":52409865502994,"sku":"GYQJLSHXJZC1540x1","price":15.63,"currency_code":"USD","in_stock":true},{"title":"51115 75mmx100mmx18mm","offer_id":52409865535762,"sku":"GYQJLSHXJZC1541x1","price":17.07,"currency_code":"USD","in_stock":true},{"title":"51116 80mmx105mmx19mm","offer_id":52409865568530,"sku":"GYQJLSHXJZC1542x1","price":19.03,"currency_code":"USD","in_stock":true},{"title":"51117 85mmx110mmx19mm","offer_id":52409865601298,"sku":"GYQJLSHXJZC1543x1","price":20.25,"currency_code":"USD","in_stock":true},{"title":"51118 90mmx120mmx22xmm","offer_id":52409865634066,"sku":"GYQJLSHXJZC1544x1","price":27.87,"currency_code":"USD","in_stock":true},{"title":"51120 100mmx135mmx25mm","offer_id":52409865666834,"sku":"GYQJLSHXJZC1545x1","price":41.82,"currency_code":"USD","in_stock":true},{"title":"51122 110mmx145mmx25mm","offer_id":52409865699602,"sku":"GYQJLSHXJZC1546x1","price":45.55,"currency_code":"USD","in_stock":true},{"title":"51124 120mmx155mmx25mm","offer_id":52409865732370,"sku":"GYQJLSHXJZC1547x1","price":51.26,"currency_code":"USD","in_stock":true},{"title":"51126 130mmx170mmx30mm","offer_id":52409865765138,"sku":"GYQJLSHXJZC1548x1","price":72.07,"currency_code":"USD","in_stock":true},{"title":"51128 140mmx180mmx31mm","offer_id":52409865797906,"sku":"GYQJLSHXJZC1549x1","price":83.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/733c4902-8ff5-4468-957d-d6689ca43e0d.jpg?v=1782348048","url":"https:\/\/homediyer.com\/products\/thrust-ball-bearings-51100-51128-all-sizes","provider":"HomeDIYer","version":"1.0","type":"link"}