{"product_id":"thrust-ball-bearings-51100-51105-all-sizes","title":"High-Quality Thrust Ball Bearings, All Sizes (Model Nos. 51100-51105)","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eThrust Ball Bearings 51100–51105 — Reliable Axial Load Control for Machinery \u0026amp; DIY Builds\u003c\/h2\u003e\n\u003cp\u003eWhen a rotating shaft needs to resist axial (thrust) forces without binding or overheating, the wrong bearing choice leads to premature wear, misalignment, and costly downtime. Engineers, machinists, and hands-on builders who work with lathes, rotary tables, jacks, and steering columns need a thrust ball bearing they can size precisely and trust under continuous load.\u003c\/p\u003e\n\u003cp\u003eThis listing covers the 51100 series thrust ball bearings in six standard sizes — 51100 through 51105 — with bore diameters ranging from 10 mm (0.39 in) to 25 mm (0.98 in) and outer diameters from 24 mm (0.94 in) to 42 mm (1.65 in). Each bearing consists of two hardened steel washers and a ball-and-cage assembly, designed to carry pure axial loads in one direction.\u003c\/p\u003e\n\u003cp\u003eTypical applications include vertical shaft positioning in drill press tables, axial load management in hydraulic jack screws, rotary indexing fixtures, and light-duty automotive steering column assemblies. The compact 9–11 mm height across all six models makes them a practical fit for space-constrained thrust ball bearing replacement projects.\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 51100-series shaft and housing dimensions per ISO 104 \/ DIN 711. Verify bore, OD, and height against your application before ordering.\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\u003eSix standard sizes in one listing\u003c\/strong\u003e — 51100 (10×24×9 mm) through 51105 (25×42×11 mm), covering the most common bore diameters in the 51100 series so you can match your shaft without sourcing from multiple suppliers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003eDesigned for pure axial (thrust) loads\u003c\/strong\u003e — the flat-washer and ball-cage construction transfers force along the shaft axis, making these bearings the correct choice for screw jacks, rotary tables, and vertical-shaft machinery where radial loads are minimal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eHardened steel raceways\u003c\/strong\u003e — both the shaft washer and housing washer are through-hardened to resist brinelling and surface fatigue under sustained axial pressure, extending service intervals compared to unhardened alternatives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eCompact, consistent height\u003c\/strong\u003e — all six models measure 9–11 mm in height, allowing predictable stack-up calculations when designing or retrofitting assemblies with tight axial clearances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eFlexible quantity options\u003c\/strong\u003e — available in packs of 1, 2, 5, 10, or 50 pieces per size, supporting single-unit repairs, small-batch builds, and higher-volume production runs without minimum-order friction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eDrop-in dimensional compatibility\u003c\/strong\u003e — bore, OD, and height conform to ISO 104 \/ DIN 711 standards, so these bearings interchange directly with other 51100-series parts from major bearing manufacturers.\u003c\/li\u003e\n\u003c\/ul\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\u003eAvailable Models\u003c\/th\u003e\n\u003ctd\u003e51100 \/ 51101 \/ 51102 \/ 51103 \/ 51104 \/ 51105\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (d)\u003c\/th\u003e\n\u003ctd\u003e10 mm – 25 mm (0.39 in – 0.98 in) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e24 mm – 42 mm (0.94 in – 1.65 in) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight \/ Width (H)\u003c\/th\u003e\n\u003ctd\u003e9 mm – 11 mm — see variant options\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\u003eRaceway Material\u003c\/th\u003e\n\u003ctd\u003eHardened bearing steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCage Type\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eGrease-lubricated (relubrication recommended for continuous duty)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensional Standard\u003c\/th\u003e\n\u003ctd\u003eISO 104 \/ DIN 711\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\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 5 \/ 10 \/ 50 pieces — see variant options\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 model number (51100 vs 51101 vs 51102, etc.)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bore diameter (d) to your shaft size. The 51100 fits a 10 mm shaft, 51101 fits 12 mm, 51102 fits 15 mm, 51103 fits 17 mm, 51104 fits 20 mm, and 51105 fits 25 mm. Measure your shaft with a caliper before ordering — a 1 mm mismatch will prevent proper seating and cause premature failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these bearings handle radial (side) loads as well as axial loads?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo. The 51100 series is designed exclusively for single-direction axial (thrust) loads. Applying significant radial force to a thrust ball bearing will cause rapid raceway damage. If your application involves combined axial and radial loads, 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\u003eAre these bearings corrosion-resistant for outdoor or wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe raceways are hardened carbon steel, which provides good wear resistance but limited corrosion resistance without additional protection. For damp or outdoor environments, apply a compatible bearing grease with corrosion inhibitors and consider regreasing at regular intervals. For fully corrosive environments (salt spray, chemical exposure), stainless steel thrust bearings would be more appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat lubrication should I use, and how often should I regrease?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA lithium-based NLGI #2 grease is suitable for most general-purpose applications. Bearings arrive with an initial grease fill. For continuous-duty or high-temperature applications, establish a regreasing interval based on operating hours — typically every 500–1,000 hours for moderate-speed, moderate-load conditions. Avoid over-greasing, which can cause churning and heat buildup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these compatible with bearings from other manufacturers in the same series?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 51100 series dimensions conform to ISO 104 \/ DIN 711 standards, which means bore, outer diameter, and height are interchangeable with 51100-series bearings from other manufacturers that follow the same standard. Always verify the three key dimensions (d, D, H) against your existing bearing or housing drawing before substituting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if my thrust ball bearing needs replacement?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCommon indicators include increased axial play (shaft moves up and down more than usual), audible grinding or clicking during rotation, visible pitting or spalling on the raceways when disassembled, or elevated operating temperature at the bearing location. If any of these signs appear, replace the bearing promptly to avoid damage to adjacent components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I order a mix of sizes in a single transaction?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach size (51100 through 51105) is a separate variant in this listing. You can add multiple variants to your cart in a single order — simply select the bearing size and quantity for each model you need. If you require a large mixed-size order, contact us to confirm availability and lead time.\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 and Amount above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"51100 (10 x 24 x 9mm) \/ 1","offer_id":52409833783570,"sku":"AATYHSZSH0077x1","price":10.5,"currency_code":"USD","in_stock":true},{"title":"51100 (10 x 24 x 9mm) \/ 2","offer_id":52409833816338,"sku":"AATYHSZSH0077x2","price":15.22,"currency_code":"USD","in_stock":true},{"title":"51100 (10 x 24 x 9mm) \/ 5","offer_id":52409833849106,"sku":"AATYHSZSH0077x5","price":33.71,"currency_code":"USD","in_stock":true},{"title":"51100 (10 x 24 x 9mm) \/ 10","offer_id":52409833881874,"sku":"AATYHSZSH0077x10","price":64.49,"currency_code":"USD","in_stock":true},{"title":"51100 (10 x 24 x 9mm) \/ 50","offer_id":52409833914642,"sku":"AATYHSZSH0077x50","price":310.69,"currency_code":"USD","in_stock":true},{"title":"51101 (12 x 26 x 9mm) \/ 1","offer_id":52409833947410,"sku":"AATYHSZSH0078x1","price":10.8,"currency_code":"USD","in_stock":true},{"title":"51101 (12 x 26 x 9mm) \/ 2","offer_id":52409833980178,"sku":"AATYHSZSH0078x2","price":16.37,"currency_code":"USD","in_stock":true},{"title":"51101 (12 x 26 x 9mm) \/ 5","offer_id":52409834012946,"sku":"AATYHSZSH0078x5","price":36.49,"currency_code":"USD","in_stock":true},{"title":"51101 (12 x 26 x 9mm) \/ 10","offer_id":52409834045714,"sku":"AATYHSZSH0078x10","price":70.11,"currency_code":"USD","in_stock":true},{"title":"51101 (12 x 26 x 9mm) \/ 50","offer_id":52409834078482,"sku":"AATYHSZSH0078x50","price":338.71,"currency_code":"USD","in_stock":true},{"title":"51102 (15 x 28 x 9mm) \/ 1","offer_id":52409834111250,"sku":"AATYHSZSH0079x1","price":11.14,"currency_code":"USD","in_stock":true},{"title":"51102 (15 x 28 x 9mm) \/ 2","offer_id":52409834144018,"sku":"AATYHSZSH0079x2","price":17.9,"currency_code":"USD","in_stock":true},{"title":"51102 (15 x 28 x 9mm) \/ 5","offer_id":52409834176786,"sku":"AATYHSZSH0079x5","price":40.32,"currency_code":"USD","in_stock":true},{"title":"51102 (15 x 28 x 9mm) \/ 10","offer_id":52409834209554,"sku":"AATYHSZSH0079x10","price":77.71,"currency_code":"USD","in_stock":true},{"title":"51102 (15 x 28 x 9mm) \/ 50","offer_id":52409834242322,"sku":"AATYHSZSH0079x50","price":376.88,"currency_code":"USD","in_stock":true},{"title":"51103 (17 x 30 x 9mm) \/ 1","offer_id":52409834275090,"sku":"AATYHSZSH0080x1","price":11.25,"currency_code":"USD","in_stock":true},{"title":"51103 (17 x 30 x 9mm) \/ 2","offer_id":52409834307858,"sku":"AATYHSZSH0080x2","price":18.39,"currency_code":"USD","in_stock":true},{"title":"51103 (17 x 30 x 9mm) \/ 5","offer_id":52409834340626,"sku":"AATYHSZSH0080x5","price":41.55,"currency_code":"USD","in_stock":true},{"title":"51103 (17 x 30 x 9mm) \/ 10","offer_id":52409834373394,"sku":"AATYHSZSH0080x10","price":80.13,"currency_code":"USD","in_stock":true},{"title":"51103 (17 x 30 x 9mm) \/ 50","offer_id":52409834406162,"sku":"AATYHSZSH0080x50","price":388.92,"currency_code":"USD","in_stock":true},{"title":"51104 (20 x 35 x 10mm) \/ 1","offer_id":52409834438930,"sku":"AATYHSZSH0081x1","price":13.26,"currency_code":"USD","in_stock":true},{"title":"51104 (20 x 35 x 10mm) \/ 2","offer_id":52409834471698,"sku":"AATYHSZSH0081x2","price":23.58,"currency_code":"USD","in_stock":true},{"title":"51104 (20 x 35 x 10mm) \/ 5","offer_id":52409834504466,"sku":"AATYHSZSH0081x5","price":54.58,"currency_code":"USD","in_stock":true},{"title":"51104 (20 x 35 x 10mm) \/ 10","offer_id":52409834537234,"sku":"AATYHSZSH0081x10","price":106.22,"currency_code":"USD","in_stock":true},{"title":"51104 (20 x 35 x 10mm) \/ 50","offer_id":52409834570002,"sku":"AATYHSZSH0081x50","price":519.32,"currency_code":"USD","in_stock":true},{"title":"51105 (25 x 42 x 11mm) \/ 1","offer_id":52409834602770,"sku":"AATYHSZSH0082x1","price":15.04,"currency_code":"USD","in_stock":true},{"title":"51105 (25 x 42 x 11mm) \/ 2","offer_id":52409834635538,"sku":"AATYHSZSH0082x2","price":27.17,"currency_code":"USD","in_stock":true},{"title":"51105 (25 x 42 x 11mm) \/ 5","offer_id":52409834668306,"sku":"AATYHSZSH0082x5","price":63.57,"currency_code":"USD","in_stock":true},{"title":"51105 (25 x 42 x 11mm) \/ 10","offer_id":52409834701074,"sku":"AATYHSZSH0082x10","price":124.15,"currency_code":"USD","in_stock":true},{"title":"51105 (25 x 42 x 11mm) \/ 50","offer_id":52409834733842,"sku":"AATYHSZSH0082x50","price":609.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_6dc8ce2c-df1c-4244-9bf1-f12dd663e88e.jpg?v=1782313552","url":"https:\/\/homediyer.com\/products\/thrust-ball-bearings-51100-51105-all-sizes","provider":"HomeDIYer","version":"1.0","type":"link"}