{"id":3518,"date":"2026-10-09T14:21:27","date_gmt":"2026-10-09T06:21:27","guid":{"rendered":"http:\/\/www.newskalsel.com\/blog\/?p=3518"},"modified":"2026-10-09T14:21:27","modified_gmt":"2026-10-09T06:21:27","slug":"what-are-the-requirements-for-using-by-function-41d0-74eeac","status":"publish","type":"post","link":"http:\/\/www.newskalsel.com\/blog\/2026\/10\/09\/what-are-the-requirements-for-using-by-function-41d0-74eeac\/","title":{"rendered":"What are the requirements for using By Function?"},"content":{"rendered":"

If you\u2019ve ever dug into industrial equipment, manufacturing processes, or even the quiet behind-the-scenes work of how tools and materials fit together, you\u2019ve likely heard the term \u201cBy Function\u201d thrown around. As someone who\u2019s been a By Function supplier for 12 years\u2014talking to plant managers, quality control leads, and operations directors every week\u2014I can tell you it\u2019s not just a buzzword. It\u2019s a framework that separates one-size-fits-all parts from solutions that actually do what they\u2019re supposed to, when you need them. But here\u2019s the thing: a lot of folks reach out to me asking if our By Function parts are right for their shop, and half the time, they\u2019re not sure what actually<\/em> goes into using By Function correctly. It\u2019s not just \u201cpick a part that works.\u201d There are concrete, non-negotiable requirements that make the difference between a fix that lasts six months and one that cuts downtime by half. By Function<\/a><\/p>\n

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Let me start with the basics, because even I was new to this once, back when I was a line lead at a small machine shop in Cleveland. By Function, at its core, means designing or sourcing a component for an exact task, rather than forcing a generic part to fill a gap. For example, a conveyor belt motor built for high-heat foundry floors is By Function\u2014it\u2019s engineered to run in 120-degree heat and heavy vibration, not just any motor that fits the mount. But to tap into that value, you have to check a few boxes first. The first big requirement I never skip is full, accurate documentation of the specific function<\/em> the part needs to perform. Too many buyers say, \u201cWe need a pump for our water line,\u201d and that\u2019s it. But that\u2019s vague. What kind of water? Is it 180-degree boiler water, or 50-degree process water? How much pressure does the line run at peak\u2014100 PSI or 500 PSI? Is the pump supposed to run 24\/7, or only 8 hours a day? Over my years, I\u2019ve had customers bring me a pump that failed in two weeks because they told us it was for a water line, not that it was for a continuous-duty line carrying abrasive, mineral-heavy 160-degree water. Documentation isn\u2019t just paperwork\u2014it\u2019s the foundation. Without that, we can\u2019t build a By Function part that works for you; we\u2019re just guessing, same as generic parts.<\/p>\n

Next, you have to align By Function requirements with your operational constraints. That sounds complicated, but it\u2019s just about being honest about what your plant can handle, not what you think By Function should<\/em> be. Let\u2019s say a food processing plant needs a valve to switch between batches of peanut butter and jelly. The ideal By Function valve would be stainless steel, food-grade, and have a quick-change seal to prevent cross-contamination. But if your plant doesn\u2019t have the budget for a custom stainless seal, or your maintenance team only knows how to work with bolted valves, that ideal part is useless. I\u2019ve learned to ask every new customer three operational questions before we even look at specs: What\u2019s your maintenance capacity? What\u2019s your budget for this part and its long-term upkeep? What\u2019s your timeline for installation? A customer might want a top-tier By Function hydraulic cylinder for their stamping press, but if they only have two hours to replace it before a 10-hour production run, a custom-cylinder that takes three weeks to machine isn\u2019t feasible. Good By Function solutions meet your needs, not industry standards that don\u2019t fit your floor.<\/p>\n

Then there\u2019s compatibility with your existing system. By Function parts aren\u2019t standalone magic\u2014they have to talk to the rest of your equipment. A few years back, a customer in the automotive parts industry reached out because their custom By Function brake caliper was making their entire axle assembly vibrate. When we dug into it, we realized they\u2019d designed the caliper to their exact needs, but forgot their existing brake lines were rated for a different pressure range. They\u2019d assumed a part built for their function would work with their current setup, and that\u2019s a costly mistake. That\u2019s why, as a supplier, we always ask for system schematic data, material compatibility records, and even past maintenance logs when a customer comes to us for a By Function part. You don\u2019t have to overhaul your entire plant, but you do need to make sure the new part plays nice with what you already have. For example, if you\u2019re using composite materials for By Function fan blades to cut weight, you need to check if your current fan motor can handle the reduced load, or if your lubrication system is compatible with the new blade\u2019s temperature output. Skipping that step leads to more problems than it solves, which is what By Function is supposed to fix.<\/p>\n

Another key requirement is long-term performance tracking. This is one area where many companies get By Function wrong\u2014they treat it like a one-time purchase, not a ongoing solution. When we ship a By Function part, we don\u2019t just send it and forget it. We provide a performance log template for our customers to track hours of use, any unusual wear, and maintenance intervals. Last year, a mining customer had a By Function conveyor roller they thought was perfect for their site\u2019s rocky, dusty conditions\u2014until their team noticed the bearings were wearing faster than expected. When they shared their performance logs, we realized the roller\u2019s seal was rated for a different dust density than what their mine had, so we adjusted it to a better seal design at no extra cost. That\u2019s how By Function works: it\u2019s iterative, not a set-it-and-forget-it fix. If you\u2019re not tracking how the part performs over time, you\u2019re not getting the full value. A generic roller would have failed entirely within a month, but our By Function roller only needed a small tweak to last twice as long.<\/p>\n

Quality validation is non-negotiable, too. By Function isn\u2019t just about specs\u2014it\u2019s about testing. When a customer asks for a By Function gear for their packaging line, we don\u2019t just machine it and ship it. We run it through 1,000 hours of simulated wear tests, test its tolerance for the line\u2019s exact speed, and even test it with the packaging material they use, because sticky labels can eat through gears faster than cardboard. A lot of buyers skip this step to save time, but it\u2019s the difference between a part that meets your function and one that actually delivers. I\u2019ll never forget a customer who cut corners on testing a By Function part for their bottling line: their custom valve sealed perfectly in the lab, but when it got to their plant, the ambient humidity made the seal swell, leading to leaks and lost production. Testing isn\u2019t a luxury for By Function\u2014it\u2019s a requirement to avoid those kinds of surprises.<\/p>\n

I also want to talk about a common misconception: By Function isn\u2019t only for large industrial plants. A small machine shop in Wisconsin reached out to me last year because their generic drill bits kept breaking when working with titanium. They thought By Function meant custom, expensive parts, but we were able to offer a standardized By Function bit rated for titanium drilling that fit their existing drill press and cost 20% less than the generic bits they were buying. The requirement here was just that they clearly communicated their material, speed, and breakage rate\u2014no big budget, no big changes, just a part built for their exact task. That\u2019s the best part of By Function: it scales. Whether you\u2019re a plant with 500 employees or a small shop with five, if you\u2019re clear on your needs, there\u2019s a By Function solution that works.<\/p>\n

Over the years, I\u2019ve seen too many companies write off By Function as overhyped, but most of the time, it\u2019s because they missed one of these key requirements. They didn\u2019t document their exact function, they ignored their operational constraints, they didn\u2019t check compatibility, or they skipped testing. As a By Function supplier, my job isn\u2019t just to sell parts\u2014it\u2019s to guide customers through these requirements, so they get a solution that works, not just a part that says \u201cBy Function\u201d on the box. If you\u2019re thinking about switching to By Function parts for your operations, the first step is to gather all that data: your part\u2019s specific function, your budget and maintenance capacity, your existing system specs, and how you\u2019ll track performance.<\/p>\n

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Ready to explore if By Function is right for your team? Reach out to our team to discuss your requirements and find a tailored solution for your operations.<\/p>\n

Residential Garage Door<\/a> References<\/p>\n

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  1. International Society of Automation (ISA). (2021). Functional Design Specifications for Industrial Components. ISA Press.<\/li>\n
  2. Manufacturing Extension Partnership (MEP). (2022). Guide to Functional Sourcing for Industrial Equipment. National Institute of Standards and Technology (NIST).<\/li>\n
  3. American Society of Mechanical Engineers (ASME). (2020). Standard for Functional Performance Testing of Industrial Parts. ASME International.<\/li>\n
  4. Industrial Maintenance and Operations Magazine. (2023). Cost-Benefit Analysis of Functional Sourcing vs. Generic Parts. Industry Media Group.<\/li>\n<\/ol>\n
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    Hangzhou Shenborui Industry & Trade Co., Ltd.<\/a><\/p>\n

    Address:
    E-mail: markrod@163.com
    WebSite:     https:\/\/www.markrod.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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