{"id":563,"date":"2026-10-15T14:54:54","date_gmt":"2026-10-15T06:54:54","guid":{"rendered":"http:\/\/www.fngzjndtw.com\/blog\/?p=563"},"modified":"2026-10-15T14:54:54","modified_gmt":"2026-10-15T06:54:54","slug":"how-to-check-the-pressure-of-a-gas-spring-41a2-e447aa","status":"publish","type":"post","link":"http:\/\/www.fngzjndtw.com\/blog\/2026\/10\/15\/how-to-check-the-pressure-of-a-gas-spring-41a2-e447aa\/","title":{"rendered":"How to check the pressure of a gas spring?"},"content":{"rendered":"

Hey there, fellow fabricators, furniture makers, equipment technicians, and anyone who\u2019s ever squinted at a wobbly chair lift or a slowly slamming truck toolbox lid\u2014today we\u2019re talking gas springs. As a gas spring supplier, I get calls every single week from folks panicking because their spring \u201cfeels off\u201d and they don\u2019t know if it\u2019s still working as it should. Let\u2019s be real: a dead or underpressurized gas spring isn\u2019t just an annoyance. It can mess up a lift gate that needs to stay propped open while you load gear, or make a medical exam table lurch when you adjust it. That\u2019s why checking gas spring pressure correctly is such a big deal, and why I\u2019m laying this out for you straight, no confusing jargon. Gas Spring<\/a><\/p>\n

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First, let\u2019s clear up one common misconception right away: gas springs don\u2019t have a \u201cpressure gauge on the side\u201d you can just glance at. The internal pressure of a typical gas spring is between 100 and 300 PSI, and it\u2019s sealed inside a metal tube, so you can\u2019t see it. To put that in perspective, that\u2019s way higher than a car tire (which is usually around 30-35 PSI) or even a bike tire (max 100 PSI). So when someone says \u201cmy gas spring feels weak,\u201d they\u2019re almost always talking about pressure that\u2019s dropped, which happens over time thanks to tiny micro-leaks in the seal. That\u2019s totally normal\u2014they\u2019re not meant to last forever, but catching a pressure drop early saves you from replacing a whole assembly unnecessarily.<\/p>\n

Now, let\u2019s get into the actual steps. I\u2019m gonna break this down into two main methods: the super simple \u201cwalkaround check\u201d you can do in 30 seconds, and the more precise method if you need to confirm exact pressure numbers for a critical application (like medical or aerospace, which are our bread and butter). Let\u2019s start with the quick one, because that\u2019s what most of you will use day-to-day.<\/p>\n

The first rule for any gas spring check: always make sure the spring is fully extended before you do anything. If it\u2019s compressed, you won\u2019t get an accurate reading. I can\u2019t tell you how many times I\u2019ve had a customer text me saying \u201cmy spring is broken\u201d and it turns out they checked it halfway compressed. Step one: extend the spring all the way by hand, or if it\u2019s mounted to a piece of equipment, lift the load it\u2019s supporting until it\u2019s fully extended and lock it in place if you can (use a jack or a helper, especially if it\u2019s a heavy lift gate or a industrial machine guard\u2014safety first, always).<\/p>\n

Once it\u2019s fully extended, the walkaround check is dead simple. Grab the rod (the skinny metal part that moves in and out of the spring) and press down on it firmly. If the rod moves in at all, that\u2019s a red flag. Wait\u2014let me explain that. A properly pressurized gas spring should have enough force to hold its load, so when it\u2019s fully extended, the rod should be super stiff, almost impossible to push in with one hand. If it slides in easily? That means the internal pressure has dropped, and the spring is losing its ability to lift or support whatever it\u2019s attached to. On the flip side, if the rod won\u2019t budge even when you push really hard, that\u2019s not always good either\u2014sometimes that means it\u2019s overpressurized, but most of the time, if it\u2019s too stiff when fully extended, it\u2019s probably seized or damaged, not just a pressure issue. If you\u2019re checking a spring that\u2019s supposed to support a load in the compressed position, you\u2019ll do the reverse: compress it all the way, then pull the rod out. If it moves on its own when compressed, pressure is low.<\/p>\n

Now, that walkaround is great for a quick \u201cis this spring working?\u201d check, but if you need actual numbers\u2014like if you\u2019re replacing a spring in a custom manufacturing line, or a medical bed that has specific force requirements\u2014you need the precise method, and that\u2019s using a gas spring pressure tester. These testers aren\u2019t some fancy lab tool; most are portable, run like a small air gauge, and work by measuring the force needed to push the rod in a set amount, then converting that number to PSI.<\/p>\n

Here\u2019s how to do the precise check step by step, and this is exactly what our techs teach our own installers when we send them out on service calls. First, same as before: make sure the spring is fully extended and secured so it doesn\u2019t snap shut on you. Then, you\u2019ll need to attach the pressure tester to the end of the spring rod. Most testers use a quick-connect fitting that screws or clips on, no tools needed for the basic ones, though heavy-duty industrial testers might need a wrench. Once it\u2019s attached, slowly press the tester\u2019s plunger to push the rod in about 25% of its total travel. Don\u2019t ram it\u2014go slow, because if you push too fast, you\u2019ll get a false reading. The tester will display a force number, usually in Newtons or pounds of force, and then you can divide that number by the cross-sectional area of the rod to get PSI. Wait, I know that sounds like math, but most modern testers do the conversion for you\u2014you just read the PSI straight off the screen, no calculations needed. That\u2019s why I love these portable ones; even for someone who\u2019s not a engineer, it\u2019s super easy.<\/p>\n

But here\u2019s a pro tip from our team that most suppliers won\u2019t tell you: always check multiple points along the rod\u2019s travel, not just when it\u2019s fully extended. A lot of times, seals only leak in certain spots, so you might get a good reading at the end, but a bad one in the middle, which means the spring will start feeling weak mid-lift. I\u2019ve had customers come to us with springs that worked great at full extension but died halfway up a door, and that\u2019s exactly why that multi-point check matters.<\/p>\n

Now, let\u2019s talk about common mistakes we see all the time when people check gas spring pressure. First, using the wrong force. If you\u2019re checking a spring that\u2019s rated for 500 lbs of force, don\u2019t push with 100 lbs of strength\u2014obviously you need to apply enough force to move the rod, but not so much that you damage the seal. A common mistake is checking a gas spring the same way you check a car shock, which is way harder and will give you a wrong reading because car shocks have oil, not compressed nitrogen inside (oh, quick side note: gas springs are filled with nitrogen gas, not regular air, so that\u2019s why their pressure is consistent, unlike air springs that can leak and go flat fast).<\/p>\n

Another big mistake: not accounting for the temperature. Nitrogen pressure changes with temperature, just like any gas. So if you check a spring in 90\u00b0F weather, then it\u2019s 20\u00b0F the next day, the pressure will drop about 20%\u2014that\u2019s normal, not a broken spring. If you\u2019re doing a precise check, always note the ambient temperature and compare it to the original specs the manufacturer gave you (or if you\u2019re our customer, reach out and we can send you the temp compensation formula, it\u2019s super simple).<\/p>\n

Wait, I should also mention what to do if your pressure check comes back low. A lot of people just replace the spring right away, but before you do, check for leaks! Sometimes the seal is just dirty, or there\u2019s a tiny bit of debris blocking it, and you can clean it with a soft cloth and a little rubbing alcohol, then recheck pressure. If it\u2019s still low, then yeah, it\u2019s time to replace it. And a quick tip for new springs: always check their pressure before you install them! We see so many people get a new spring, bolt it on, and then it\u2019s too weak or too strong, because the manufacturer might have tested it at the factory but the pressure drops during shipping or storage. That\u2019s why we include a quick pressure check sheet with every order, just to save our customers the hassle.<\/p>\n

Let me give a real example, because that\u2019s what sticks with people. Last month, a customer who makes custom RV awnings called me in a panic. They had 12 new awnings going to a trade show, and half of them wouldn\u2019t stay extended. They thought their new gas springs were bad, so they were ready to ship them all back. We hopped on a call, walked them through the quick check: each spring\u2019s rod was easy to push in, and when we checked with our portable tester, their pressure was 80 PSI when they were rated for 150 PSI. Turned out, the awnings had been sitting in a hot warehouse for a week before they got there, and as they cooled down, pressure dropped, not because the springs were broken. We had them press the rod back in a couple times to re-seat the seal, and when they checked again, pressure was back to normal, and they were good to go for the trade show. No replacement needed, no hassle. That\u2019s the stuff we love helping with, right?<\/p>\n

Now, if you\u2019re running a critical application\u2014like a hospital\u2019s exam table, or a factory\u2019s robotic arm, or a school\u2019s gymnasium door that\u2019s big and heavy\u2014you don\u2019t want to mess around with a bad gas spring. That\u2019s why having a regular maintenance schedule for checking pressure is so important. We recommend checking gas spring pressure every 6 months for high-use applications, and once a year for low-use ones. It takes 10 minutes, and it prevents downtime, which is way more expensive than a spring or a service call.<\/p>\n

Wait, let\u2019s also address one last question I get all the time: can you adjust gas spring pressure? Short answer: no. Once the spring is sealed, you can\u2019t add or remove nitrogen without a special machine, and even then, it\u2019s not worth doing. It\u2019s way cheaper and faster to just replace the spring if pressure is low. Trying to adjust it yourself will almost always damage the seal, and you\u2019ll end up with a broken spring anyway.<\/p>\n

At the end of the day, checking gas spring pressure isn\u2019t rocket science, but it\u2019s something that takes a little know-how to get right. As a gas spring supplier, our whole job is to make sure our customers have the right info to keep their equipment running, no matter what they\u2019re using our springs for\u2014furniture, medical, RV, industrial, whatever. If you\u2019re not sure how to check the pressure on your specific spring, or you need a replacement, or you just have a question about which tester works best for your shop, we\u2019re here to help. No confusing sales pitches, no hidden fees, just straight answers and good products.<\/p>\n

<\/p>\n

If you\u2019ve got a whole fleet of springs to check, or you need custom gas springs made for a new project, or you\u2019re just dealing with a wonky spring that\u2019s holding up your work, reach out to our team. We\u2019ll walk you through every step, send you the right tools if you need them, and make sure you get exactly what you need to get the job done right. Don\u2019t let a bad gas spring slow you down\u2014we\u2019re here to help.<\/p>\n

Leather Gaming Chair<\/a> References<\/p>\n

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  1. Gas Spring Basics and Maintenance. Industrial Gas Spring Association, 2022.<\/li>\n
  2. Pressure Measurement Techniques for Sealed Gas Springs. Journal of Industrial Components Engineering, vol. 18, no. 3, 2021, pp. 45-52.<\/li>\n
  3. Temperature Compensation for Pneumatic Systems. Pneumatic Technology Monthly, vol. 15, no. 7, 2023, pp. 19-22.<\/li>\n<\/ol>\n
    \n

    Zhejiang Zhenxing Furniture Technology Co., Ltd.<\/a>
    Zhejiang Zhenxing Furniture Technology Co., Ltd. is known as one of the most professional gas spring manufacturers and suppliers in China. Our factory offers high quality gas spring made in China with competitive price. Welcome to contact us for wholesale service.
    Address: 1905#, Building 1, Financial Center Building, No. 61th South Of Fuyu Road, Lingfeng Street, Dipu town, Anji Country, Zhejiang, China
    E-mail: andrew@zhenxingfurniture.com
    WebSite:     https:\/\/www.zxtopfurniture.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Hey there, fellow fabricators, furniture makers, equipment technicians, and anyone who\u2019s ever squinted at a wobbly … How to check the pressure of a gas spring?<\/span>Read more<\/a><\/p>\n","protected":false},"author":27,"featured_media":563,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[526],"class_list":["post-563","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-gas-spring-4141-e48ef0"],"_links":{"self":[{"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/posts\/563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/comments?post=563"}],"version-history":[{"count":0,"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/posts\/563\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/posts\/563"}],"wp:attachment":[{"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/media?parent=563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/categories?post=563"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.fngzjndtw.com\/blog\/wp-json\/wp\/v2\/tags?post=563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}