If you’ve ever worked in industries like construction, mining, agriculture, or material handling, you’ve probably relied on hydraulic motors to power everything from conveyor belts to heavy excavator arms. As a Rexroth hydraulic motor supplier, I get asked this question more than any other: “What’s the lifespan of a Rexroth hydraulic motor?” It’s not a one-size-fits-all answer, but over 12 years of working directly with clients, repairing units, and helping with replacements, I’ve learned that lifespan depends on a lot more than the motor’s build quality—and Rexroth motors are built to outperform most others when handled correctly. Rexroth Hydraulic Motor
Let’s start with the basics: Rexroth’s hydraulic motors aren’t generic parts. They’re engineered for heavy-duty, continuous operation, which means their baseline lifespan is way higher than budget alternatives. But I’ve seen brand-new motors fail in 6 months, and 20-year-old units still running strong. So what’s the real range, and how do you make sure your motor hits the upper end of it?
First, let’s break down what a “typical lifespan” actually means for Rexroth motors. Most of our clients in continuous heavy applications—like a mining operation running 16 hours a day, 6 days a week—can expect a properly maintained Rexroth motor to last between 10,000 and 20,000 operating hours. For lighter, intermittent use—like a farm tractor that only runs during planting and harvest season, or a warehouse conveyor that works 8 hours a day, 5 days a week—that jumps to 25,000 to 30,000 hours. The sweet spot, though, is when you push 30,000 hours: I once helped a construction company repair a Rexroth A6VM series motor that had logged 32,000 hours, and the only issue was a worn seal—nothing wrong with the core components.
That said, I’ve had clients come to me with motors that lasted less than 5,000 hours. More often than not, it’s not a manufacturing defect—it’s how the motor was used and maintained. Let’s talk about the biggest factors that cut a motor’s life short.
Overloading is the number one culprit. Rexroth motors have specific torque and pressure ratings, and pushing them beyond that is like redlining a car engine every time you turn it on. A client in the forestry industry once installed a Rexroth motor on a log splitter that was rated for 20 tons, but they were splitting 25 tons of oak logs regularly. Within 10 months, the motor’s pistons and swash plate were worn to the point of failure. Even temporary overloading, like getting a heavy load stuck in a conveyor and forcing the motor to power through it, can cause micro-damage that adds up over time.
Poor maintenance is another big one. Hydraulic motors run on clean, properly rated oil, and if that oil is contaminated with dirt, metal shavings, or water, it’s like pouring sand in your engine. I’ve seen motors fail because a client skipped changing the hydraulic oil for 2 years, or used the wrong viscosity oil for their climate. Rexroth recommends checking and changing filters every 500 hours of operation, and oil every 2,000 hours for continuous use—ignore that, and you’re asking for trouble. Even small issues, like a loose fitting that causes slow oil leaks, can lead to overheating, which breaks down the oil and damages internal parts fast.
Installation mistakes also play a role. You’d be surprised how many motors fail because they’re mounted wrong. If a motor is not aligned properly with its drive shaft, that creates unnecessary vibration that wears out bearings and gears in months, not years. I had a client in the packaging industry who installed a Rexroth hydraulic motor on a conveyor, and the installer skipped the alignment check. After 3 months, the motor’s output shaft was bent and had to be replaced. That’s a $2,000 mistake that could’ve been avoided with a 15-minute alignment test.
Now, what makes Rexroth motors stand out when it comes to long lifespan? Unlike budget motors that use lower-grade materials, Rexroth uses hardened steel for internal components like pistons, cylinders, and swash plates, which resist wear even under high pressure. They also have precision engineering that reduces friction, so the motor doesn’t work as hard as cheaper alternatives. For example, our Rexroth A2FM fixed displacement motor series is designed for high shock loads, which is why it’s so popular in mobile heavy equipment. I’ve repaired A2FM motors that had 15,000 hours on them, and the internal parts looked almost as good as new—something I never see with budget brands.
Another thing: Rexroth’s warranty support is second to none, but that’s only if you follow their maintenance guidelines. A lot of clients don’t realize that if you skip recommended maintenance, your warranty can be void. I always tell new clients that investing $200 in filters and oil changes every few hundred hours is way cheaper than buying a new $5,000 motor every year.
Let’s talk about real-world examples to make this concrete. Last year, I worked with a large agricultural equipment dealer who had 12 Rexroth hydraulic motors on their combine harvesters. The motors were running 12 hours a day during harvest season, and 2 hours a day for maintenance the rest of the year. They did regular oil and filter changes, and after 18,000 hours total, only one motor needed a seal replacement. The rest were still going strong, and the dealer told me they expected them to hit 30,000 hours without major issues.
On the flip side, a small construction company came to me with a Rexroth motor that failed after 2,000 hours. When we inspected it, we found metal shavings in the oil—they’d never changed the filter since installing it. The internal pistons were pitted beyond repair. That motor would’ve lasted 10 times longer if they’d just stuck to the maintenance schedule.
So, what can you do to maximize your Rexroth hydraulic motor’s lifespan? Here are the steps I share with every client:
First, match the motor to your application. Don’t use a motor rated for 10 tons on a load that’s 15 tons. Rexroth has a range of motors for every use case—fixed displacement, variable displacement, low-speed high-torque, high-speed, whatever you need. I can help you pick the right model for your equipment, so you don’t overload it.
Second, stick to a strict maintenance routine. Change filters every 500 operating hours, oil every 2,000 hours (or sooner if you work in dusty, dirty environments), and check for leaks, loose fittings, and unusual noise every week. Unusual vibration or noise is often an early sign of wear, so catching it early can save you thousands in repairs.
Third, make sure installation is done right. Align the motor properly with the drive shaft, use the correct mounting hardware, and follow Rexroth’s installation manual to the letter. If you’re not comfortable doing it yourself, hire a technician who has experience with Rexroth motors—cheap installation mistakes are the most common hidden cause of premature failure.
Fourth, invest in regular inspections. I recommend a full motor inspection every 1,000 hours, where a technician checks internal wear, fluid quality, and performance. We do these checks for clients all the time, and most of the time, we can catch small issues before they turn into major failures.
Now, let’s address a common question: Can you extend a motor’s lifespan after it’s already running? Absolutely. I’ve had clients come to me with a motor that’s 15,000 hours old, running rough, and thinking they need to replace it. But a full rebuild—using genuine Rexroth parts, not aftermarket knockoffs—can add another 10,000 hours of life. Genuine parts matter a lot here; aftermarket parts might be cheaper, but they don’t have the same precision or durability as Rexroth’s original components. I always tell clients that rebuilding a Rexroth motor is 50% cheaper than buying a new one, and it’s just as reliable if done right.
I’ve been working with Rexroth motors for over a decade, and the one thing I can always count on is that when they’re treated right, they last. I’ve seen motors on old cranes from the 1990s still working because their owners took care of them, while newer budget motors from the last 5 years have been replaced twice already. Rexroth builds their motors to be workhorses, not disposable parts—but that only works if you give them the care they need.
If you’re looking for a Rexroth hydraulic motor, or you need help maintaining, repairing, or rebuilding the one you already have, I’m here to help. I’ve worked with everything from small farm operations to large mining companies, and I can help you pick the right motor for your application, set up a maintenance schedule that fits your needs, or provide genuine Rexroth parts for repairs. Don’t let a poorly maintained motor cost you downtime and money—reach out to our team to discuss your hydraulic motor needs, and we’ll help you get the most life out of your Rexroth equipment.
Poclain Hydraulic Motor References:
Rexroth Hydraulic Motors Technical Documentation, Bosch Rexroth AG
"Hydraulic Motor Lifespan and Maintenance Best Practices," National Fluid Power Association, 2021
Mobile Hydraulic Equipment Reliability Report, Construction Equipment Association, 2022
Jining Jinjia Hydraulic Co., Ltd.
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Address: Jining New Material Industrial Park, Shandong, China.
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