As a robotics supplier with years of on-the-ground experience supporting manufacturing, logistics, and industrial teams across North America, I’ve seen first-hand how a robot’s lifespan and consistent performance boil down to one often-overlooked factor: intentional, proactive maintenance. Far too many of our clients wait until a robot seizes mid-cycle or a component fails entirely, only to face costly downtime that stalls production lines, misses delivery windows, and eats into profit margins. That’s why today I want to break down the specific maintenance requirements for industrial robots we share with every one of our new customers—simplified, actionable, and tailored to the real-world challenges of teams that rely on automation, not just own it. Robot
First, let’s clarify: maintenance for robots isn’t a one-size-fits-all task. The needs of a 6-axis industrial arm welding car parts in a Detroit factory are drastically different from a collaborative robot (cobot) packing e-commerce orders in a Texas fulfillment center. But across all our models, we categorize maintenance into three core tiers: routine daily checks, scheduled periodic servicing, and predictive maintenance (PdM) for long-term reliability. None of these steps are overly complex, but skipping even one can lead to avoidable failures.
Start with the basics: daily pre-operation checks that take 2-5 minutes, no specialized training required. This is the first line of defense, and it’s something we train every client’s on-floor supervisor to oversee. For every robot, we walk through three key areas each morning before powering up: visual inspection of external components, end-of-arm tooling (EOAT) verification, and environment checks.
Visual inspections aren’t just a quick scan—they’re about catching small issues before they become big ones. For example, loose cable ties on the robot’s arm might seem trivial, but over time, those can fray power or signal cables, leading to intermittent outages. We also check for signs of wear on the robot’s structural joints: scuffed paint, minor surface corrosion (especially if the robot is used in food and beverage or outdoor processing environments), or small dents that could indicate a past collision. Even a tiny dent in a joint housing can throw off the robot’s precision, leading to faulty welds or mispacked items that get sent to customers. Next, EOAT checks: the grippers, torches, suction cups, or other tools attached to the robot’s end. For a welding robot, we inspect the torch nozzle for spatter buildup—if left uncleaned, spatter can cause uneven welds that require rework. For a palletizing cobot, we check suction cups for cracks or loose seals, which would mean it can’t securely lift boxes. Finally, environment checks: confirming the work cell is free of loose debris, dust buildup, or leaks (like coolant in a machine tending application) that could seep into the robot’s internal parts. Many of our clients skip these daily checks, but we’ve measured that teams that do see 30% fewer unplanned downtime events in their first year of operation.
Next, periodic scheduled maintenance—timed based on operating hours, not just calendar time, because a robot running 24/7 will wear out faster than one used 40 hours a week. This is where we partner with clients to build a custom service calendar, aligned with their production schedules. We break this into two intervals: every 500 operating hours (about every 3 months for a 2-shift plant) and every 2000 operating hours (annually for most operations).
At 500 hours, the focus is on lubrication and joint component checks. Robots have gearboxes in each axis joint, and those gears rely on specialized industrial lubricant to reduce friction. Over time, lubricant breaks down from heat and contamination, leading to increased wear on gears. For our standard industrial arms, we recommend a synthetic grease designed specifically for robotic gearboxes—never generic automotive grease, which won’t withstand the high operating temperatures of 100+ degree F industrial work cells. We also inspect the gear seals at this interval: worn seals can let in dust, metal shavings, or liquid, which will damage the gears over time. For cobots, which have different joint designs, the maintenance at 500 hours shifts slightly: we check the touch safety sensors (critical for cobots that work alongside human workers) to make sure they trigger correctly if a worker brushes against the arm, and tighten any loose fasteners on the frame.
At the 2000-hour mark, the annual deep dive, we cover more comprehensive servicing that includes internal component checks, calibration, and part replacement where needed. This is the time to open the robot’s control cabinet to inspect cooling fans, circuit boards, and power supplies. Dust buildup inside the cabinet is a leading cause of overheating—we’ve seen clients replace entire circuit boards because they skipped annual dust cleaning, costing thousands in parts and downtime. We also replace worn consumable parts at this stage: belts, filters, and end-of-life bearings. Calibration is another key annual task: even small vibrations from a production line can throw off a robot’s positional accuracy by a few millimeters, which might not matter for rough palletizing but is critical for precision tasks like PCB assembly or precision welding. We use our proprietary calibration tools to adjust the robot’s axes back to factory specs, ensuring it performs as well as day one.
Now, the part we’ve been pushing more clients to adopt lately: predictive maintenance. This is the game-changer for teams that want to avoid unplanned downtime entirely. Unlike scheduled maintenance, which is based on time, PdM uses real-time data from the robot’s sensors to detect early signs of wear or failure. Here’s how it works: every one of our robots comes with built-in sensors that track things like joint temperature, vibration, motor current, and tool performance. We pair that with a cloud-based platform that clients can access via desktop or mobile phone, which alerts them to potential issues before they cause a breakdown. For example, if a robot’s joint vibration spikes unexpectedly, the platform will flag that it’s a sign of a misaligned gear, and the maintenance team can fix it during the next planned shift, not in the middle of a production run.
We recently worked with a logistics client that had been dealing with 1-2 unplanned downtime events a month for their order fulfillment cobots. After we installed our PdM tools and adjusted their maintenance schedule to prioritize data alerts, they cut those unplanned events to 1 every 3 months—and saved over $120,000 a year in lost productivity. The key here is that PdM isn’t just for large factories; even small businesses with 2-3 robots can benefit, as our platform is designed to be user-friendly without requiring a dedicated data team.
Of course, there are industry-specific adjustments to maintenance that we always outline for our clients. A robot used in a food processing plant, for example, needs more frequent sanitization checks (daily, in some cases) to comply with FDA regulations, and non-corrosive lubricants that are safe if they accidentally come into contact with food. A robot used in outdoor agriculture, on the other hand, needs more frequent checks for dirt and debris buildup in joints, and sealed cables to protect against moisture and UV damage. We don’t just sell robots—we provide tailored maintenance guides for each industry, because a one-size-fits-all approach doesn’t work.
I want to be transparent, though: even with the best maintenance plans, robots will eventually need part replacements. The most common parts that wear out over 5-7 years of operation are EOAT components (since they’re handled the most), cables, and joint bearings. We make sure our clients have access to genuine replacement parts, which are designed to work seamlessly with our robots—aftermarket parts might be cheaper, but they often don’t fit correctly, leading to increased wear and shorter part lifespans. We also offer on-site support for emergency repairs, because we know that every minute a robot is down costs money.
Now, let’s address a common misconception: many small business owners think robots are too complex to maintain on their own, so they outsource all maintenance to the supplier. That’s not necessary. We train every client’s team to perform the daily checks and even the basic scheduled maintenance tasks (like lubrication and fastener tightening) with no specialized background. Our maintenance guides are written in plain language, with step-by-step photos, so even a team member who’s never worked with robotics can follow along. We only step in for the deep annual calibrations and any major repairs, which keeps maintenance costs way lower than if you hired a dedicated robotic technician.
At the end of the day, the goal of robot maintenance is simple: to extend the life of your robot, keep it performing at peak accuracy, and avoid the costly downtime that disrupts your business. We’ve seen robots that run reliably for 10+ years with consistent, proactive maintenance, and others that fail in 2 years because their owner skipped a few lubrication checks. The difference is intentionality.
If you’re considering adding robots to your operations, or if your current robots have been facing unplanned downtime, we’re here to help. We can walk you through building a custom maintenance plan tailored to your specific robots and industry, and even provide on-site training for your team to ensure they feel confident executing daily and scheduled checks. To discuss your needs and learn more about our maintenance support, reach out to our team for a consultation. We’re ready to help you keep your robots running smoothly, so you can focus on growing your business.
Robot References
- Robotics Industries Association. (2022). Industrial Robot Maintenance Best Practices. RIA Report 2022-001.
- International Organization for Standardization. (2019). Robots for Industrial Applications – Maintenance Requirements. ISO 10218-2:2019.
- Smith, J., & Carter, L. (2023). Predictive Maintenance for Collaborative Robots: A Case Study of Logistics Operations. Journal of Manufacturing Automation, 45(3), 112-119.
- Food and Drug Administration. (2021). Guidance on Robot Maintenance for Food Processing Equipment. FDA Technical Bulletin 2021-04.
- European Robotic Industry Association. (2022). Small and Medium Enterprise Robot Maintenance Guide. EuRobotics Report 2022-07.
Zhejiang Tongzhu Technology Co., Ltd
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