Hey everyone, it’s Jake from the automation parts side here, and let me tell you—nothing grinds a production line to a halt faster than a broken sensor or a faulty PLC module that was “stored fine” until you pulled it out of the box. I’ve seen it way too many times: a production manager panicking because a spare part they had sitting in the warehouse for six months won’t power up, all because they stored it like an old power drill instead of a precision automation component. Today, I’m breaking down exactly how we supply our parts and what we tell every client about keeping their own spares in top shape—no stuffy lab jargon, just real stuff I’ve learned from working with hundreds of factories over the last 8 years. Automation Parts
First off, let’s cut through the confusion: automation parts aren’t generic. A tiny M12 Ethernet connector is totally different than a big heavy motor terminal block, and each type has its own specific storage needs. Most of the issues we get called about aren’t manufacturing defects—they’re straight-up storage mistakes that could’ve been avoided. Let’s start with the basics everyone should nail, no matter what part you’re dealing with.
Temperature is the big one, and it’s not just “don’t freeze or overheat it.” I’ve heard people say “as long as it’s not in direct sunlight, it’s fine” and that’s half right—for most electronics, we keep storage between -10°C (14°F) and 40°C (104°F) is the sweet spot. Why? Because components like microchips and circuit boards get wonky when it’s too cold—condensation forms when you bring a cold part into a warm room, and that little bit of water can short out pins. On the flip side, high temps melt solder joints over time and break down the plastic casing on things like pushbuttons or solenoid coils. I once had a client store a pallet of proximity sensors next to a loading dock heater—all the plastic housings cracked in 3 months. Dumb, preventable mistake. And before you ask: no, a garage or a warehouse corner by the dock isn’t “stable.” We recommend a climate-controlled space, but if you’re tight on space, at least keep it away from heating/AC vents, windows, and exterior walls that swing temp hard.
Next, humidity. This is the silent killer of automation parts, especially the ones with exposed metal pins or connectors. The sweet spot here is 40% to 60% relative humidity. Too low, and static electricity builds up—static zaps are the #1 reason new sensors die in storage, trust me. I’ve seen a whole batch of new photoelectric sensors fail because a warehouse was so dry in winter (20% RH) that when someone handled them, static blew a tiny chip on the board. Too high, and you get rust on metal pins, mold on circuit board casings, and corrosion inside connectors that makes them lose signal. That’s the stuff you can’t see until you plug it in, and by then it’s too late. Pro tip: if you’re storing unopened parts in their original packaging, most reputable suppliers (including us) already package them with a desiccant packet that’s good for 6 months max. After that? Swap in new desiccants or run a dehumidifier in your storage area. Don’t skimp on this—we’ve had clients send back parts with rusted pins that “were stored perfectly,” and when we tested the humidity log, it was at 75% for 2 months. That’s on storage, not us.
Then there’s physical handling and packing. Original packaging isn’t a marketing gimmick—it’s there for a reason. Most automation parts come in anti-static bags, foam inserts, and even sealed plastic to block dust and light. We get it, you want to save packaging, but if you take a new PLC module out of its anti-static bag and just toss it on a shelf, dust builds up in the ventilation slots, and small metal parts can scratch the circuit board. Also, never stack heavy stuff on top of small parts— I had a client stack a 50lb motor on a box of 10 tiny limit switches. The limit switch housings cracked, and when they tested them, the internal actuator pins were bent. Another big no: don’t store parts loose in bins where metal parts (like screwdrivers, old connectors) can scratch or short them. We recommend either keeping them in original packaging until you need them, or using labeled anti-static bins with dividers for small parts. Oh, and label everything clearly—nothing worse than digging through a pile of unmarked parts trying to find the right replacement for line 3.
Wait, what about specific part types? Because, let’s be real, a hydraulic cylinder is way different than a logic controller. Let’s break down the main ones we supply, since that’s what our clients care about. For electronics—PLCs, HMIs, sensors, circuit boards—anti-static storage is non-negotiable. Even if the temp and humidity are perfect, static can kill a chip instantly. We always tell clients: if you open the anti-static bag, don’t leave the part out longer than you need. And never touch the circuit board pins with your bare hands—even the oils on your skin can cause issues over time. For mechanical parts: motors, bearings, conveyors, solenoids. These need to be stored away from dust and moisture too, but they’re less sensitive to static. The big thing here is lubrication—most mechanical parts have a light, factory-applied oil coating to prevent rust. If you leave them in a damp space, that oil breaks down, and when you go to install the motor, the bearings seize up. We recommend keeping mechanical parts in their original sealed packaging, or wrapping them in plastic with a thin layer of light oil if you open them. Also, keep them off concrete floors—concrete holds moisture, and parts on the floor rust way faster. For things like hydraulic hoses or pneumatic lines: store them coiled, not twisted, and keep them away from direct sunlight. UV rays break down the rubber, and if you leave them stretched out for months, the material weakens and bursts when you pressurize it. I’ve seen a pneumatic line blow 2 weeks after installation because it was stored stretched across a warehouse floor in the sun—total avoidable.
Now, what’s a mistake we see all the time that’s totally fixable? Rotating stock. So many clients buy extra parts “just in case” and then forget about them. A part stored for 2 years past its shelf life (even unused) is way more likely to fail. Most automation parts have a shelf life of 1 to 5 years, depending on the type. For example, sensors with lithium batteries (like some proximity sensors) only last 2 years in storage, because the battery slowly drains even if unused. PLC modules? Up to 5 years if stored correctly. The rule here is FIFO—First In, First Out. When new parts come in, put the older ones at the front of the shelf so you use them first. We have a client that uses color-coded labels: red for parts less than 6 months old, yellow for 6-12 months, green for over a year. That way, they never accidentally use an old part without checking.
Wait, what if you don’t have a climate-controlled storage space? A lot of small factories don’t, and that’s totally fine—we don’t expect everyone to have a fancy warehouse. The makeshift solution that works? Seal parts in airtight plastic bins with desiccant packets, and keep them in a shaded, dry part of the warehouse (like a high shelf away from the ground and walls). Avoid metal bins, if you can—plastic is better for blocking moisture and static. And check the desiccant packets every few months—if they turn pink or blue (most are color-changing), swap them out. It’s a cheap fix that saves you thousands in broken parts.
Now, let’s talk about when things go wrong and how to spot it before installation. No matter how well you store parts, it’s smart to do a quick check when you take them out. For electronics: inspect the pins for bending or rust, the circuit board for discoloration (brown or black spots mean overheating or moisture damage), and test the basic function if you have a spare tester. For mechanical parts: spin bearings by hand to make sure they’re not stiff, check for rust on shafts, and look for cracks in hoses or plastic parts. If anything looks off, send it back to the supplier—don’t try to fix it yourself. We always replace parts that were damaged due to storage, no questions asked, because we know our clients don’t have time to troubleshoot a bad spare.
At the end of the day, storing automation parts right isn’t rocket science—it’s just paying attention to the little details. We’ve supplied parts to factories all over, and the ones that have the least downtime for spare parts issues are the ones that follow these simple rules: control temp and humidity, keep parts in their original packaging until needed, rotate stock with FIFO, and do quick checks when pulling parts out. If you’re not sure about a specific part you have, don’t guess—reach out to us, we’ve got a quick guide for almost every part we supply.
Here’s the thing: downtime costs factories way more than the cost of a few desiccant packets or a little extra effort to store parts right. A 10-minute line stop can cost thousands in lost production, so investing 10 minutes to store parts correctly is a no-brainer.
If you’re looking for reliable automation parts with clear storage guidelines, or you need help troubleshooting your current spare parts setup, hit us up. We work with factories of all sizes, from small machine shops to big automotive plants, and we’re happy to walk you through exactly what you need for your specific parts. No sales pitches, no confusing fine print—just straight answers.
CNC Turning Parts References:
- Association for Advancing Automation. (2022). Storage Guidelines for Industrial Automation Components.
- International Electrotechnical Commission. (2021). Environmental Conditions for Storage of Electronic Equipment.
- Fluid Power Society. (2023). Best Practices for Storing Hydraulic and Pneumatic Components.
Suzhou Huaquan Electromechanical Manufacturing Co., Ltd.
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