{"product_id":"plane-axial-ball-bearing-thrust-bearings-51100-51107","title":"Plane Axial Ball Bearing Thrust Bearings 51100 51101 51102 51103 51104 - 51107","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003ePlane Axial Ball Bearing Thrust Bearings — Reliable Axial Load Control from 10mm to 35mm Bore\u003c\/h2\u003e\n\u003cp\u003eWhen your rotating assembly needs to handle axial (thrust) loads without sacrificing smooth operation, a mismatched or undersized bearing becomes a costly failure point. Engineers, machinists, and serious DIYers working on lathes, rotary tables, jacks, and vertical shaft assemblies need a thrust bearing they can spec with confidence. These plane axial ball bearing thrust bearings cover the 51100–51107 series, giving you a verified fit across a wide range of shaft diameters.\u003c\/p\u003e\n\u003cp\u003eEach bearing in this series consists of two hardened steel washers (shaft washer and housing washer) with a ball-and-cage assembly between them, designed to carry pure axial loads in one direction. Bore diameters range from 10mm (0.39 in) to 35mm (1.38 in), with outer diameters from 24mm (0.94 in) to 52mm (2.05 in) and heights from 9mm to 12mm (0.35–0.47 in), following standard 511xx series dimensional tolerances.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include: replacing worn thrust bearings on manual lathe tailstocks and carriage feeds; supporting axial loads in screw jacks and lifting columns; and maintaining shaft positioning in rotary indexing fixtures and turntable assemblies — all scenarios where long-tail searches like \"51104 thrust bearing replacement\" or \"axial ball bearing 20mm bore\" lead buyers to exactly this product.\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 511xx series shaft and housing seats. Verify bore diameter (d), outer diameter (D), and height (H) against your assembly drawing before ordering. Suitable for low-to-moderate speed, unidirectional axial load applications.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Plane Axial Ball Bearing Thrust Bearings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003e8 Size Options (51100–51107):\u003c\/strong\u003e Bore diameters from 10mm to 35mm cover a broad range of shaft sizes in a single product family, reducing sourcing complexity for multi-axis builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eHardened Steel Washers:\u003c\/strong\u003e Both the shaft washer and housing washer are hardened for wear resistance, maintaining dimensional stability under sustained axial loading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003ePure Axial Load Design:\u003c\/strong\u003e The flat-race geometry is optimized for unidirectional thrust loads — ideal for screw jacks, vertical shafts, and feed mechanisms where radial loads are handled separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities:\u003c\/strong\u003e Available in 1 pc, 10 pcs, or 50 pcs per order, so you can buy a single replacement or stock up for production runs without overpaying.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eStandard 511xx Series Dimensions:\u003c\/strong\u003e Conforms to internationally recognized 511xx dimensional standards, making these direct drop-in replacements for OEM thrust bearings in the same series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Finish:\u003c\/strong\u003e Bearing surfaces are treated to resist oxidation during storage and light-duty use in dry or lightly lubricated environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Plane Axial Thrust Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Series\u003c\/th\u003e\n\u003ctd\u003e511xx (51100 \/ 51101 \/ 51102 \/ 51103 \/ 51104 \/ 51105 \/ 51106 \/ 51107)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (d)\u003c\/th\u003e\n\u003ctd\u003e10mm – 35mm (0.39 in – 1.38 in) — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e24mm – 52mm (0.94 in – 2.05 in) — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight \/ Width (H)\u003c\/th\u003e\n\u003ctd\u003e9mm – 12mm (0.35 in – 0.47 in) — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003ePlane Axial Ball Bearing (Thrust Bearing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoad Direction\u003c\/th\u003e\n\u003ctd\u003eUnidirectional axial (thrust) load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHardened carbon steel (washers and balls)\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 (apply grease before installation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Speed\u003c\/th\u003e\n\u003ctd\u003eLow to moderate (consult bearing load\/speed tables for your size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 pcs \/ 10 pcs \/ 50 pcs — 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 right size thrust bearing for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bore diameter (d) to your shaft diameter and the outer diameter (D) to your housing seat. The variant names follow the format \u003cem\u003e51xxx \/ d×D×H mm\u003c\/em\u003e — for example, 51104\/20×35×10mm means a 20mm bore, 35mm OD, and 10mm height. Always cross-reference with your assembly drawing or the worn bearing's stamped number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these thrust bearings handle radial loads as well?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo. Plane axial (thrust) ball bearings are designed exclusively for unidirectional axial loads. If your application involves combined radial and axial loads, you will need a deep-groove or angular-contact ball bearing instead. Using a thrust bearing under radial load will cause rapid wear and premature failure.\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\u003eThese bearings have a standard corrosion-resistant finish suitable for dry or lightly lubricated indoor environments. For outdoor, marine, or washdown applications where moisture exposure is continuous, consider stainless steel thrust bearings instead. Applying a compatible grease before installation will extend service life in moderately humid conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these direct replacements for OEM 511xx series thrust bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. These bearings conform to standard 511xx series dimensions (d, D, H), making them dimensionally interchangeable with OEM bearings of the same part number. Always verify the stamped number on your existing bearing — the first five digits (e.g., 51104) identify the series and size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat lubrication should I use, and how often?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eApply a thin, even coat of lithium-based or general-purpose bearing grease to the ball-and-cage assembly and both washer faces before installation. Re-lubricate at regular service intervals based on your operating speed and load. Avoid over-greasing, which can cause churning and heat buildup at higher speeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich pack quantity should I order — 1 pc, 10 pcs, or 50 pcs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eOrder 1 pc for a single repair or prototype build. Choose 10 pcs if you maintain multiple machines or want a service stock on hand. The 50 pcs option offers the best per-unit value for production runs, batch rebuilds, or resale. All quantities ship as the same bearing — only the count differs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum speed rating for these thrust bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePlane axial ball bearings are rated for low-to-moderate rotational speeds. The exact limiting speed depends on the bore size, lubrication method, and load — smaller bearings (e.g., 51100\/10mm bore) tolerate higher RPM than larger ones (e.g., 51107\/35mm bore). For high-speed applications, consult the bearing manufacturer's load\/speed tables for your specific size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size and Packing Quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"51100\/10x24x9mm \/ 1 pcs","offer_id":52410763575570,"sku":"GYWYPSHXJZC1518x1","price":1.89,"currency_code":"USD","in_stock":true},{"title":"51101\/12x26x9mm \/ 1 pcs","offer_id":52410763608338,"sku":"GYWYPSHXJZC1519x1","price":3.25,"currency_code":"USD","in_stock":true},{"title":"51102\/15x28x9mm \/ 1 pcs","offer_id":52410763641106,"sku":"GYWYPSHXJZC1520x1","price":1.97,"currency_code":"USD","in_stock":true},{"title":"51103\/17x30x9mm \/ 1 pcs","offer_id":52410763673874,"sku":"GYWYPSHXJZC1521x1","price":2.03,"currency_code":"USD","in_stock":true},{"title":"51104\/20x35x10mm \/ 1 pcs","offer_id":52410763706642,"sku":"GYWYPSHXJZC1522x1","price":2.24,"currency_code":"USD","in_stock":true},{"title":"51105\/25x42x11mm \/ 1 pcs","offer_id":52410763739410,"sku":"GYWYPSHXJZC1523x1","price":2.98,"currency_code":"USD","in_stock":true},{"title":"51106\/30x47x11mm \/ 1 pcs","offer_id":52410763772178,"sku":"GYWYPSHXJZC1524x1","price":3.33,"currency_code":"USD","in_stock":true},{"title":"51107\/35x52x12mm \/ 1 pcs","offer_id":52410763804946,"sku":"GYWYPSHXJZC1525x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"51100\/10x24x9mm \/ 10 pcs","offer_id":52410763837714,"sku":"GYWYPSHXJZC1518x10","price":9.64,"currency_code":"USD","in_stock":true},{"title":"51101\/12x26x9mm \/ 10 pcs","offer_id":52410763870482,"sku":"GYWYPSHXJZC1519x10","price":10.19,"currency_code":"USD","in_stock":true},{"title":"51102\/15x28x9mm \/ 10 pcs","offer_id":52410763903250,"sku":"GYWYPSHXJZC1520x10","price":11.22,"currency_code":"USD","in_stock":true},{"title":"51103\/17x30x9mm \/ 10 pcs","offer_id":52410763936018,"sku":"GYWYPSHXJZC1521x10","price":12.09,"currency_code":"USD","in_stock":true},{"title":"51104\/20x35x10mm \/ 10 pcs","offer_id":52410763968786,"sku":"GYWYPSHXJZC1522x10","price":16.03,"currency_code":"USD","in_stock":true},{"title":"51105\/25x42x11mm \/ 10 pcs","offer_id":52410764001554,"sku":"GYWYPSHXJZC1523x10","price":22.97,"currency_code":"USD","in_stock":true},{"title":"51106\/30x47x11mm \/ 10 pcs","offer_id":52410764034322,"sku":"GYWYPSHXJZC1524x10","price":26.37,"currency_code":"USD","in_stock":true},{"title":"51107\/35x52x12mm \/ 10 pcs","offer_id":52410764067090,"sku":"GYWYPSHXJZC1525x10","price":32.16,"currency_code":"USD","in_stock":true},{"title":"51100\/10x24x9mm \/ 50 pcs","offer_id":52410764099858,"sku":"GYWYPSHXJZC1518x50","price":45.14,"currency_code":"USD","in_stock":true},{"title":"51101\/12x26x9mm \/ 50 pcs","offer_id":52410764132626,"sku":"GYWYPSHXJZC1519x50","price":48.13,"currency_code":"USD","in_stock":true},{"title":"51102\/15x28x9mm \/ 50 pcs","offer_id":52410764165394,"sku":"GYWYPSHXJZC1520x50","price":53.03,"currency_code":"USD","in_stock":true},{"title":"51103\/17x30x9mm \/ 50 pcs","offer_id":52410764198162,"sku":"GYWYPSHXJZC1521x50","price":57.38,"currency_code":"USD","in_stock":true},{"title":"51104\/20x35x10mm \/ 50 pcs","offer_id":52410764230930,"sku":"GYWYPSHXJZC1522x50","price":77.18,"currency_code":"USD","in_stock":true},{"title":"51105\/25x42x11mm \/ 50 pcs","offer_id":52410764263698,"sku":"GYWYPSHXJZC1523x50","price":111.78,"currency_code":"USD","in_stock":true},{"title":"51106\/30x47x11mm \/ 50 pcs","offer_id":52410764296466,"sku":"GYWYPSHXJZC1524x50","price":129.05,"currency_code":"USD","in_stock":true},{"title":"51107\/35x52x12mm \/ 50 pcs","offer_id":52410764329234,"sku":"GYWYPSHXJZC1525x50","price":157.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of6_56c11918-dafb-41d1-988f-f7f4fa4ae420.jpg?v=1782566455","url":"https:\/\/homediyer.com\/products\/plane-axial-ball-bearing-thrust-bearings-51100-51107","provider":"HomeDIYer","version":"1.0","type":"link"}