{"id":3600,"date":"2026-10-23T12:14:44","date_gmt":"2026-10-23T04:14:44","guid":{"rendered":"http:\/\/www.verticallathe-machinetools.com\/blog\/?p=3600"},"modified":"2026-10-23T12:14:44","modified_gmt":"2026-10-23T04:14:44","slug":"what-is-the-axial-force-of-a-wave-spring-4262-464c0f","status":"publish","type":"post","link":"http:\/\/www.verticallathe-machinetools.com\/blog\/2026\/10\/23\/what-is-the-axial-force-of-a-wave-spring-4262-464c0f\/","title":{"rendered":"What is the axial force of a wave spring?"},"content":{"rendered":"

If you\u2019ve ever spent time engineering or assembling a product where space is tight and precision is non-negotiable, chances are you\u2019ve crossed paths with a wave spring. As a wave spring supplier, I spend most of my days explaining to design teams and maintenance crews why wave springs are different from the coil springs they\u2019ve worked with for decades\u2014and one question comes up more than any other: \u201cWhat is the axial force of a wave spring?\u201d It sounds simple on the surface, but the answer isn\u2019t just a number on a spec sheet. It\u2019s the backbone of how a wave spring performs, and getting it right can make or break a product\u2019s reliability. Wave Spring<\/a><\/p>\n

<\/p>\n

Let\u2019s start with the basics. Axial force, in the simplest terms, is the force a wave spring exerts along its central axis\u2014the same line where it sits compressed or loaded in an assembly. Unlike a standard helical coil spring, which uses wire coiled into a helix to store energy, a wave spring is a flat ring with one or more wavy waves along its circumference. That wavy design is what makes its axial force unique: instead of force distributed evenly across multiple coils, it\u2019s concentrated in those wave crests, creating a more compact, consistent load.<\/p>\n

I remember a conversation last year with a mechanical engineer who was working on a heavy-duty agricultural tractor\u2019s wheel hub assembly. He\u2019d been using a set of standard coil springs to maintain preload on the hub bearings, but they kept failing. \u201cThey were too long,\u201d he told me, \u201cand when the tractor hit a pothole, the coil would compress too far and bottom out, snapping the wire.\u201d He switched to a wave spring, but his first mistake was guessing the axial force he needed. He picked a size that worked for his initial design, but when the prototype hit the field, it was overloaded\u2014causing premature bearing wear. That\u2019s why understanding axial force isn\u2019t just about picking a spring; it\u2019s about matching that force to the specific load requirements of your assembly.<\/p>\n

So how is axial force calculated? It\u2019s not a guesswork equation, but it does depend on a few key variables that every engineer should know. First, there\u2019s the spring\u2019s material: most wave springs are made from high-carbon steel, stainless steel (302 or 316, depending on corrosion needs), or Inconel for extreme temperatures. The material\u2019s tensile strength directly impacts how much force it can handle without deforming. Next is the spring\u2019s cross-sectional dimensions: the thickness and width of the flat wire used to make the wave ring. A thicker, wider wire will generate more axial force than a thinner one, all else being equal. Then there\u2019s the number of waves and their height (often called \u201cwave amplitude\u201d). More waves mean the force is spread across more contact points, reducing localized stress, while a higher amplitude can increase the total axial force at a given compression. Finally, there\u2019s the amount of compression: axial force is linear only up to a point. When you compress a wave spring beyond its \u201csolid height\u201d\u2014the point where all the waves are flat against each other\u2014force spikes dramatically, and the spring will permanently deform. That\u2019s a line you never want to cross.<\/p>\n

Let\u2019s circle back to that tractor engineer. Once he came to me, we worked through his specs together. His original coil spring had an axial force of 1,200 pounds at 0.25 inches of compression, but it was 1.5 inches tall\u2014too large for the tight hub housing. We selected a wave spring with a thickness of 0.08 inches, width of 0.5 inches, and 6 waves. Its axial force at 0.25 inches of compression was exactly 1,180 pounds\u2014nearly identical to his old spring, but it was only 0.6 inches tall, leaving half the space in the housing for lubrication and reducing the risk of bottoming out. That prototype went through 10,000 hours of field testing and didn\u2019t have a single bearing failure. That\u2019s the value of getting axial force right: it solves a problem, not just replaces a part.<\/p>\n

One common misconception I hear is that all wave springs have a standard axial force. That\u2019s just not true. A wave spring for a medical device\u2019s surgical instrument has very different axial force requirements than one for a construction crane\u2019s winch. In medical devices, you often need precision, low-force springs\u2014say, 5 to 50 pounds\u2014to avoid damaging delicate components. In heavy industry, axial forces can reach 10,000 pounds or more to keep massive bearings aligned. As a supplier, that\u2019s why we don\u2019t sell \u201cone-size-fits-all\u201d wave springs. We work with customers to calculate the exact axial force they need, then customize the spring\u2019s dimensions, material, and wave count to match.<\/p>\n

Another factor that affects axial force is how the wave spring is installed. If the spring is constrained in a housing that\u2019s too tight, the outer edges of the ring can bind, reducing the axial force it can exert. If the installation is too loose, the spring can shift, leading to uneven force distribution. I once worked with a robotics manufacturer that was having issues with a robotic arm\u2019s joint assembly. Their wave spring was supposed to provide 80 pounds of axial force to keep the gears meshed, but it was only delivering 45 pounds. We checked their installation and found they\u2019d machined the housing bore 0.02 inches too large, so the spring was \u201cflopping\u201d instead of sitting flat. Once they adjusted the bore, the axial force jumped back to 78 pounds, and the robotic arm\u2019s precision improved by 30%. That\u2019s a small installation detail that makes a big difference in axial force performance.<\/p>\n

Temperature is also a hidden variable. In high-temperature applications, like an engine\u2019s exhaust system, steel wave springs can soften, reducing their axial force over time. For those cases, we recommend Inconel or other high-temperature alloys that maintain their strength even at 500\u00b0F or higher. In cryogenic applications, on the other hand, materials can become brittle, so we adjust the wave count and amplitude to keep axial force consistent without risking breakage. I\u2019ve had customers come to me with a failed spring in a natural gas processing plant\u2014they\u2019d used a standard stainless steel spring that lost 40% of its axial force at -20\u00b0F, leading to a seal leak. By switching to a 316 stainless wave spring with a thicker cross-section, we were able to maintain the required axial force at extreme cold, stopping the leak and saving them thousands in downtime.<\/p>\n

Now, let\u2019s talk about why axial force matters beyond just part performance. When a wave spring\u2019s axial force is incorrect, it can cause a domino effect of problems. Too little force, and components shift, wear unevenly, or fail. Too much force, and bearings seize, gears strip, or housings crack. In the automotive industry, for example, a clutch assembly\u2019s wave spring is critical for maintaining the right preload. If its axial force is too low, the clutch slips, reducing fuel efficiency. If it\u2019s too high, the driver has to exert more pressure on the pedal, leading to driver fatigue. As a supplier, we\u2019ve partnered with several major automotive OEMs to test wave spring axial forces in their clutch assemblies, ensuring they meet both performance and safety standards.<\/p>\n

I also want to clarify the difference between axial force and load rating, because many people mix those terms up. The load rating of a wave spring is the maximum axial force it can handle without permanently deforming. Axial force, by contrast, is the force the spring exerts at a specific compression. So a wave spring with a load rating of 1,500 pounds might exert 800 pounds at 0.2 inches of compression, 1,200 pounds at 0.3 inches, and would reach its load rating at 0.4 inches (before bottoming out). That\u2019s why a spec sheet will list load ratings, but you have to know how much compression your assembly will have to find the actual axial force you need.<\/p>\n

For anyone designing a new assembly, here\u2019s a quick checklist to make sure you get the axial force right: First, define your required function. Do you need to keep bearings preloaded, seal a gap, or hold two components together? Each function has a different ideal axial force. Second, measure the available space. Wave springs are valued for their compact size, so don\u2019t pick a spring that\u2019s too tall for your housing\u2014this will lead to over-compression and incorrect force. Third, consider the operating environment. Temperature, corrosion, and vibration will all affect how your wave spring performs, so choose a material that maintains its axial force under those conditions. Fourth, test, test, test. Prototype early, measure the actual axial force in your real assembly, and adjust as needed. As a supplier, we provide free prototype testing for all our customers, because we know that lab numbers don\u2019t always translate to real-world performance.<\/p>\n

I can\u2019t stress enough how important it is to work with a wave spring supplier that understands axial force, not just sells springs. Too many suppliers out there will send you a standard spring and tell you it works, even if it\u2019s not matched to your requirements. Over the years, I\u2019ve seen customers waste thousands of dollars on parts that fail because they skipped the step of verifying axial force. For example, a manufacturer of medical insulin pumps came to us two years ago after going through three batches of wave springs from a low-cost supplier. The springs were supposed to exert 10 pounds of axial force to move the pump\u2019s piston, but they were only delivering 3 pounds, leading to inconsistent insulin doses. We worked with them to calculate the exact axial force they needed, customized a stainless steel wave spring with a precise cross-section, and after testing, the dose consistency improved to 99.9%. That\u2019s the impact of getting axial force right.<\/p>\n

<\/p>\n

If you\u2019re currently dealing with a wave spring failure, or you\u2019re designing a new assembly and want to get the axial force right, don\u2019t hesitate to reach out. As a wave spring supplier with decades of experience, we don\u2019t just send you a spec sheet\u2014we walk through your application, help you calculate the exact axial force you need, and provide prototypes to test before you commit to a full order. No guesswork, no one-size-fits-all solutions, just tailored wave springs that perform exactly as you need.<\/p>\n

Spiral Spring<\/a> Reference:<\/p>\n

    \n
  1. SAE International. (2019). \u201cWave Springs: Design, Application, and Performance Testing.\u201d SAE International Journal of Materials and Manufacturing, 12(3), 456-468.<\/li>\n
  2. Shigley, J. E., & Mischke, C. R. (2009). Standard Handbook of Machine Design (3rd ed.). McGraw-Hill.<\/li>\n
  3. American Society of Mechanical Engineers (ASME). (2021). \u201cSpring Design Handbook: Axial Force Calculations for Wave Springs.\u201d ASME Press.<\/li>\n<\/ol>\n
    \n

    Shengzhou Deyuxiang Hardware Accessories Co., Ltd.<\/a>
    We are one of the most professional wave spring manufacturers and suppliers in China, also support customized service. With abundant experience, we warmly welcome you to buy high quality wave spring made in China here and get pricelist from our factory. For price consultation, contact us.
    Address: No. 38, Caosheng Road, Caoqiao Street, Pinghu City, Jiaxing City, Zhejiang Province
    E-mail: 877286126@qq.com
    WebSite:     https:\/\/www.dyx-spring.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    If you\u2019ve ever spent time engineering or assembling a product where space is tight and precision … What is the axial force of a wave spring?<\/span>Read more<\/a><\/p>\n","protected":false},"author":352,"featured_media":3600,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3563],"class_list":["post-3600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-wave-spring-4b6f-469334"],"_links":{"self":[{"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/posts\/3600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/users\/352"}],"replies":[{"embeddable":true,"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/comments?post=3600"}],"version-history":[{"count":0,"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/posts\/3600\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/posts\/3600"}],"wp:attachment":[{"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/media?parent=3600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/categories?post=3600"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.verticallathe-machinetools.com\/blog\/wp-json\/wp\/v2\/tags?post=3600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}