{"id":587,"date":"2026-10-29T16:38:51","date_gmt":"2026-10-29T08:38:51","guid":{"rendered":"http:\/\/www.modooro.com\/blog\/?p=587"},"modified":"2026-10-29T16:38:51","modified_gmt":"2026-10-29T08:38:51","slug":"can-i-repair-the-5315-motor-myself-4458-b1572c","status":"publish","type":"post","link":"http:\/\/www.modooro.com\/blog\/2026\/10\/29\/can-i-repair-the-5315-motor-myself-4458-b1572c\/","title":{"rendered":"Can I repair the 5315 Motor myself?"},"content":{"rendered":"

Hey everyone, thanks for stopping by\u2014if you\u2019re here, you\u2019ve probably got a 5315 motor on the fritz, or you\u2019re just curious if you can fix it yourself. Full transparency: I\u2019ve been selling these bad boys for over 6 years now, so I\u2019ve seen almost every kind of issue they throw at people. Today I\u2019m breaking down whether DIY repairs are worth it for your 5315, what\u2019s safe to tackle on your own, and when you should bite the bullet and reach out to a pro (or just source a new one directly from me). Let\u2019s keep this real\u2014no stuffy jargon, no sales fluff, just straight talk. 5315 Motor<\/a><\/p>\n

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First off, let\u2019s make sure we\u2019re on the same page about what a 5315 motor even is, for the folks who stumbled here not knowing the model name. It\u2019s a compact, high-torque DC motor super common in industrial automation, small robotics, conveyor belt systems, even some heavy-duty power tools and medical devices. I sell thousands of these a year, and the most common issues I hear about from customers are weird noises, inconsistent speed, overheating, or total failure. So let\u2019s go through each one and see if DIY can save you cash.<\/p>\n

Let\u2019s start with the super common stuff that\u2019s actually fixable at home, no fancy gear needed. For example: loose wiring connections. I can\u2019t tell you how many times a customer will shoot me a message saying their motor won\u2019t turn on, and when I ask if they checked the wires, they go \u201cwait, I didn\u2019t even think about that.\u201d The 5315 has a pretty standard wiring harness\u2014two power leads, a ground, and sometimes a feedback wire if it\u2019s the encoder version. Over time, vibrations from constant use will loosen those crimps, or the insulation will fray if it\u2019s been knocked around. To check this, just unplug the motor from whatever it\u2019s mounted to, grab a multimeter (you can pick one up at any hardware store for $10-$15, no special skills needed), and test continuity across each pair of leads. If one doesn\u2019t read a steady current, just re-crimp the connection, tape it up, and you\u2019re good. That\u2019s a 10-minute fix, no experience required.<\/p>\n

Another easy one: dirty or worn brushes. Brushes are little carbon components that transfer power to the motor\u2019s commutator, and they wear down over time\u2014usually after 1,000-2,000 hours of use, depending on how heavy the load is. The 5315 has accessible brush caps on the side, so you don\u2019t have to take the whole motor apart. Just pop the caps off, pull out the old brushes, and measure their length against a new set. If they\u2019re less than 1\/8 inch long, replace \u2019em. Pro tip: don\u2019t go digging for generic brushes\u2014get ones made specifically for the 5315. I sell these replacements in bulk, but even if you grab them from a motor parts shop, it\u2019s way cheaper than buying a whole new motor. I\u2019ve had customers tell me this fixed their motor that was sputtering so bad it could barely move a small conveyor. That\u2019s another 15-minute job, max.<\/p>\n

Now, the stuff that\u2019s probably not DIY, and you should think twice about messing with. Let\u2019s start with overheating that doesn\u2019t clear up after fixing brushes or wiring. If your motor is running so hot you can\u2019t hold your hand on the housing for more than 2 seconds, that\u2019s usually a sign of something more serious\u2014like a short in the stator, or worn bearings. The 5315\u2019s stator is the stationary part inside the motor, and rewinding that is not like wrapping a birthday present. It takes precision winding, specific wire gauge, and knowledge of how the electromagnetic field works to get right. Mess up the winding, and you\u2019ll either get no power, random speed fluctuations, or even a fire risk. I\u2019ve had a couple customers try to rewind their own stators and end up blowing the whole motor, then coming to me to buy a replacement at a higher cost than if they\u2019d just skipped the DIY in the first place.<\/p>\n

Same goes for bearing replacement. The 5315 uses two small ball bearings that support the shaft. If they\u2019re making a high-pitched squeal or a grinding noise when the motor runs, that\u2019s them going bad. But getting the old bearings out without damaging the motor shaft or the housing takes a puller tool, and a steady hand. A lot of DIYers I talk to will try to hammer them out with a screwdriver, and they end up cracking the aluminum housing of the 5315, which is impossible to replace without sourcing a whole new motor. It\u2019s not that it\u2019s technically impossible, but the skill and tools required just aren\u2019t worth the hassle for most people. If you don\u2019t have a bearing puller (which runs about $20-$30, and you\u2019ll only use it once), it\u2019s not a great investment.<\/p>\n

Now, let\u2019s talk about the big one: total motor failure. If your 5315 isn\u2019t turning at all, and you\u2019ve checked the power supply (make sure that\u2019s working, first\u2014another easy step) and the brushes, then it\u2019s probably the armature. The armature is the rotating part that interacts with the stator\u2019s magnetic field, and if that\u2019s burnt out or warped, there\u2019s almost no DIY fix that works. Trying to true a warped armature requires a lathe, which most people don\u2019t have in their garage, and rewinding a burnt armature is the same precision work as the stator. I\u2019ve literally had a customer send me a photo of their 5315 armature that they tried to sand down, and it was so uneven that it would never spin smoothly again. Total waste of time and money.<\/p>\n

Wait, but let\u2019s be clear\u2014there\u2019s a middle ground here. A lot of people assume that repairing a used motor is way cheaper than buying new, but that\u2019s not always true. If you\u2019re spending $50 on parts for a DIY fix that might fail, plus 2 hours of your time, that\u2019s not way better than buying a refurbished or new 5315 from a reliable supplier like me. And if the motor is under warranty? Don\u2019t even touch it. Most 5315s come with a 12-month warranty from the manufacturer, and messing with the internals voids that immediately. I\u2019ve seen this happen so many times\u2014customer\u2019s motor dies at 8 months, they take it apart to fix it, and the manufacturer refuses to cover it. Total bummer.<\/p>\n

Another thing to keep in mind: safety. These motors run on low voltage usually (12V, 24V, 48V) which is technically not lethal, but they can draw a lot of current when shorted, and that can melt wires or cause burns if you\u2019re not careful. If you\u2019re working with higher-voltage variants of the 5315 (some industrial ones run on 120V AC), skip the DIY entirely. High voltage is no joke, and one wrong move can land you in the ER. I always tell my customers: if you have to ask \u201cis this safe?\u201d the answer is almost always no.<\/p>\n

Now, for the folks who are set on DIY, here\u2019s my quick checklist to make sure you don\u2019t mess up: 1) Confirm the power supply is working first\u201490% of \u201cmotor failure\u201d is just a dead power cord or a bad control board. 2) For brush replacements, use only 5315-specific brushes, not generic ones. Generic brushes wear out 2x faster and can damage the commutator. 3) Never disassemble the motor beyond the brush caps and terminal connections. 4) If you see any burnt plastic, black residue, or smell something funny when the motor runs, stop immediately\u2014don\u2019t keep testing it, that\u2019s a fire hazard.<\/p>\n

At the end of the day, the 5315 is a workhorse, but it\u2019s not designed to be a toy for backyard repairs. The DIY fixes are super simple and low-risk, but once you get past that, it\u2019s better to either pay a professional tech (which will cost around $80-$150) or just source a new one. And that\u2019s where I come in. As someone who\u2019s been supplying these motors for years, I can tell you that a new 5315 is actually pretty affordable, and it comes with a warranty, so you don\u2019t have to stress about messing up a DIY fix.<\/p>\n

I know a lot of people hate dealing with sales pitches, so I\u2019ll keep this short: if you\u2019re tired of fighting with a broken 5315, or you need a replacement for a project, hit me up to chat about pricing, availability, or anything else. No pressure, no weird hoops\u2014just real answers.<\/p>\n

Wait, one last note for the robotics and automation folks I know: if you\u2019re replacing a 5315 in a existing system, make sure to get the exact model with the same voltage, encoder type (if it has one), and shaft size. I keep every variant in stock, so I can help you confirm which one you need if you send over the model number off your old motor.<\/p>\n

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Alright, that\u2019s all I\u2019ve got for today. Don\u2019t overcomplicate fixing your 5315\u2014take it step by step, and if it\u2019s more than loose wires or brushes, skip the DIY. Hit me up anytime if you have questions or need to source a new motor.<\/p>\n

FPV Drone Frame\u200b<\/a> References:<\/p>\n

    \n
  1. Industrial Motor Repair Best Practices, National Electrical Manufacturers Association (NEMA), 2022<\/li>\n
  2. 5315 Motor Specification and Common Failure Analysis, Motor Technologies Journal, 2021<\/li>\n
  3. DC Motor Safety Guidelines, Occupational Safety and Health Administration (OSHA), 2020<\/li>\n<\/ol>\n
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    Xpert Intelligent Equipment Co., Ltd.<\/a><\/p>\n

    Address: Building 3, No. 65 Longhu Road, Longdong Community, Baolong Street, Longgang District, Shenzhen
    E-mail: winnie@xpfpv.com
    WebSite:     https:\/\/www.xpfpv.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Hey everyone, thanks for stopping by\u2014if you\u2019re here, you\u2019ve probably got a 5315 motor on the … Can I repair the 5315 Motor myself?<\/span>Read more<\/a><\/p>\n","protected":false},"author":13,"featured_media":587,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[550],"class_list":["post-587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-5315-motor-4830-b18c4e"],"_links":{"self":[{"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/posts\/587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/comments?post=587"}],"version-history":[{"count":0,"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/posts\/587\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/posts\/587"}],"wp:attachment":[{"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/media?parent=587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/categories?post=587"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.modooro.com\/blog\/wp-json\/wp\/v2\/tags?post=587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}