If you’ve ever reached out for Rexroth Series parts—whether you’re building a custom automated assembly line, tweaking a material handling system, or troubleshooting a hydraulic component that’s underperforming—you’ve probably asked yourself this exact question: “Do they even make this in the size I need?” Let me cut through the confusion right away: Yes, Rexroth Series products come in way more sizes than most people realize, and as a direct supplier, I deal with this exact demand every single day. I’ve worked with mechanics, industrial engineers, small business owners, and even hobbyists (yes, there are folks out there building custom hydraulic lifts in their garages) who all come to me with the same problem: they’ve spent weeks looking for a Rexroth part that fits their setup, only to hit a wall because most generic suppliers only stock the most common sizes. That’s why I wanted to break down exactly how Rexroth sizes work, why there’s way more variety than you might think, and how we make it easy to get the right fit every time. Rexroth Series
First, let’s get one thing straight: when people talk about “Rexroth Series products,” they’re not just referring to one line of parts—they’re talking about the full Bosch Rexroth portfolio, which covers everything from hydraulic pumps and linear motion systems to pneumatic components, industrial valves, and even full automation controllers. Each of these product lines has its own sizing framework, and they’re designed to fit every conceivable industrial application, from small-scale lab equipment to massive mining machinery. Let’s start with the most common product people ask about: hydraulic pumps. I can’t tell you how many times a customer has come to me saying, “I need a Rexroth pump for a 10-ton press, but all I see is the big 50cc ones online.” Well, here’s the thing: Rexroth’s A10VO series, which is their most popular variable displacement pump, comes in displacements from 10cc right up to 250cc. Wait, you’re working on a mobile application, like a forklift? They’ve got the A4VG series, which starts at 28cc and goes all the way to 125cc, perfect for smaller vehicle systems. And if you need even larger, for things like construction cranes or marine equipment, the A11VO series goes up to 1000cc—no exaggeration. I just recently shipped an A11VO 100cc pump to a company building a custom offshore workboat, and that’s not even the biggest size they offer. A lot of competitors only stock the middle sizes, like the 45cc or 71cc, because those are the most common, but Rexroth’s entire range covers every gap in between.
But sizing isn’t just about displacement for hydraulic parts—there’s also port size, mounting flange dimensions, and pressure ratings, all of which come in different sizes. For example, a lot of people forget that even the same displacement pump might have different ports depending on the application: a pump for a stationary industrial machine might have NPT ports, while a mobile pump uses SAE code ports, and Rexroth makes both. That’s a common point of confusion because if you order the right displacement but the wrong port size, your whole installation is dead in the water. As a supplier, we don’t just check part numbers—we ask questions: what’s your application? What’s your system pressure? What’s your existing port size? Because even if two pumps are the same displacement, the size and type of ports can vary, and we make sure you get the exact right fit. I had a customer last month who ordered a 71cc A10VO pump, but he didn’t specify port type, and we caught it before shipping—turned out he needed SAE code 16 ports, not NPT, and that would’ve been a nightmare for him if we’d sent the wrong one. That’s the kind of detail most generic suppliers miss, but we’re all about getting it right.
Now, let’s talk about another huge line of Rexroth products that gets lots of sizing questions: linear motion systems. If you’ve ever seen a robot arm on an assembly line, or a conveyor belt that moves products seamlessly, that’s usually Rexroth linear technology. Their linear guides, ball screws, and linear modules come in sizes that range from tiny ones for small automation (like the modules used in pharmaceutical packaging machines) up to massive linear rails used in machine tools. For example, their Rexroth Ball Rail System (which everyone refers to as the R16 series, by the way) has rail profiles from 15mm right up to 65mm wide. A 15mm rail is perfect for a small lab pump that needs precise linear movement, while a 65mm rail is heavy-duty enough to support a 2-ton machine tool head. And the carriages that go with those rails? They come in matching sizes too, with different load capacities, so you don’t have to oversize or undersize for your application. A lot of small businesses come to me because they can’t find a linear rail that fits their custom setup, and I always tell them to check the R16 series—there’s a size for almost every load. Just last week, a customer building a custom medical device needed a 20mm rail that could move a 5kg camera with ultra-precision, and that’s a standard size we had in stock, no lead time needed.
Pneumatic components are another big one, and people are often surprised at how many sizes Rexroth offers here too. Things like air cylinders, valves, and fittings come in tiny sizes for low-flow applications (like opening a small door in a packaging machine) and larger sizes for high-flow, heavy-duty pneumatic systems. Their ISO cylinders, which are the standard for most industrial pneumatics, come in bore sizes from 20mm up to 125mm, and stroke lengths that can be custom ordered or off-the-shelf in increments. Wait, you need a special stroke length that’s not listed? No problem—Rexroth does custom strokes for almost all their pneumatic lines, and we can get those shipped in a week or less, which is way faster than some other brands that take 4 weeks. I’ve had customers who needed a 1m stroke cylinder for a custom conveyor, and we ordered it custom from Rexroth, had it to them in 5 days, and they didn’t have to wait months. That’s the kind of flexibility most people don’t realize Rexroth has.
But here’s the key point I want to drive home: sizing isn’t just about picking the right dimension—it’s about matching the product to your specific load, speed, pressure, and application. A lot of guys new to industrial parts think “bigger is better,” but that’s not always the case. If you order a 100cc pump when you only need a 45cc one, you’re wasting money on extra power you don’t need, and it’ll wear out faster because it’s running at a lower load. Conversely, ordering a pump that’s too small will cause overheating and breakdowns. That’s why we don’t just sell parts—we work with customers to figure out exactly what size they need. I’ve spent hours on the phone with a small business owner who was building a custom woodworking machine, walking them through the displacement, pressure, and linear rail size they needed, because they’d been trying to figure it out for weeks on their own with no luck. That’s the value we bring as a Rexroth Series supplier—we know the sizing inside and out, and we don’t just send you a part; we make sure it works for your application.
Another thing that surprises a lot of people is that Rexroth also offers modular sizing for many of their lines. For example, their modular automation systems (like the IndraDrive series) let you mix and match components to fit your exact setup, so you’re not stuck with a one-size-fits-all system. If you need a drive controller that works with a 24V system for small machinery and the same system can scale up to a 480V system for larger equipment, that’s doable with Rexroth. The sizing here is flexible, not rigid, which is perfect for businesses that are growing or modifying their systems over time. I had a customer a few years ago who started with a small automation cell using a 24V IndraDrive, then expanded to a second cell a year later, and we just added the larger drive component to his existing setup instead of making him replace the whole system. That’s the beauty of Rexroth’s modular sizing—you don’t have to start from scratch every time.
Now, I know what some of you are thinking: “Okay, so Rexroth has different sizes, but are they easy to find? A lot of suppliers only stock the most common ones.” That’s why we set up our stock to cover the majority of the standard sizes, and we have direct access to Rexroth’s full line, including less common sizes and custom orders. A lot of generic industrial parts suppliers only stock the middle of the road sizes because they turn over fast, but as a specialized Rexroth supplier, we keep smaller, less common sizes in stock too, because we know how often those are needed for custom applications. For example, the A10VO 10cc pump is a smaller size that not many suppliers stock, but we keep it in stock because it’s used in small material handling systems and lab equipment. I once had a customer from a university lab who needed that exact size for a custom fluid dynamics experiment, and if we didn’t have it in stock, he would’ve had to wait weeks.
Wait, let’s also address a common misconception: “size” can mean different things depending on the part. For linear guides, it’s the rail width and carriage load capacity; for pumps, it’s displacement and pressure rating; for cylinders, it’s bore size and stroke length. So when you’re searching for a Rexroth part, make sure you’re clear on what “size” you need—don’t just say “I need a small pump.” Tell us what pressure you need, how much flow, what application it’s for, and we can narrow it down perfectly. That’s another thing we do: we help customers translate their needs into the right Rexroth size. A lot of engineers know their part number, but if they don’t, we can walk them through the specs to get the right fit.
I’ve been supplying Rexroth parts for over 8 years now, and in that time, I’ve seen almost every possible sizing problem you can imagine. Customers ordering a pump with the wrong port size, a linear rail that’s too narrow for their load, a pneumatic cylinder with a stroke that’s too short. But the good news is that Rexroth designed their products to have sizes for every possible need, and as a supplier who specializes in Rexroth, we know how to cut through the noise to get you exactly what you need. You don’t have to waste time searching through generic parts that don’t fit, or waiting weeks for custom orders. We have the standard sizes in stock, and we can get less common or custom sizes shipped fast.
At the end of the day, if you’re wondering if Rexroth Series products are available in different sizes, the answer is a resounding yes—way more than most people realize. The variety covers everything from tiny, precision parts for small lab equipment to heavy-duty components for large industrial machinery, and the sizing is designed to match almost every application. The key is working with a supplier who knows the Rexroth line inside and out, can help you navigate the sizing options, and has the stock to get you what you need without the runaround. Whether you’re a small business building a custom machine, an engineer working on a production line, or someone who just needs a replacement part for an old Rexroth system, we’re here to help you find the exact size you need. Don’t waste another week guessing if your part exists—reach out to us, tell us your application, and we’ll hook you up with the right Rexroth Series product, in the right size, fast.
Axial Piston Motor References
Bosch Rexroth Product Catalog: Hydraulic Components, 2024
Bosch Rexroth Linear Motion Technology Guide, 2023
Bosch Rexroth Pneumatic Components Specification Sheet, 2024
Wuhan Xinlaifu Hydraulic Equipment Co., Ltd.
Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the most professional rexroth series hydraulic spare parts manufacturers and suppliers in China, featured by high quality OEM&ODM products. Please feel free to buy customized rexroth series hydraulic spare parts from our factory.
Address: Liansu Industrial Park, No.1, Xincheng 11th Road, Dongxihu District, Wuhan, Hubei, China
E-mail: service@xlf-hydraulic.com
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