Hey everyone, it’s Jake from the hydraulic pump team, and today we’re tackling one of the most common questions I get from folks looking for A4VSO axial piston pumps: “What’s the actual weight of one of these bad boys?” I swear, I probably answer this 10 times a day—half the time from guys who need to ship it across a warehouse or mount it tight on a compact machine, and the other half from people trying to balance their entire hydraulic system’s load. Let’s cut the jargon and break this down like we’re chatting at a trade show booth, no stuffy engineering textbooks required. A4VSO Axial Piston Pump
First off, let’s get one thing straight: there’s no single “one weight fits all” answer here. The A4VSO line is made for all kinds of jobs—think construction cranes, farm combines, machine tools, even marine applications. Each variant is built for different flow rates, pressures, and mounting styles, so weight shifts like crazy depending on what spec you pick. I see too many vendors online posting a single number like it’s carved in stone, and that just sets up people for headaches when their exact model shows up heavier or lighter than expected. I’m gonna pull back the curtain on our actual stock numbers here, since I deal with these pumps every single day, and that’s what’ll help you out.
Let’s start with the smallest, most compact models—like the A4VSO 40. That’s the entry-level guy, perfect for smaller machinery, maybe a 10-ton excavator or a compact press. When it’s a standard version with a basic control, no fancy extra ports or flanges, that bad boy comes in right around 28 kilograms (that’s roughly 62 pounds, for us folks who still think in imperial). I’ve had these on my shipping bench a dozen times, and they’re light enough that one person can lift it alone without straining their back—great if you’re swapping parts in a tight space. But wait, throw on a pressure compensator or a load-sensing control, and that adds a couple kilos—we’re talking up to 31 kg (68 lbs) max for the tiny 40 series.
Next up, the mid-range models, which are the workhorses of the line—A4VSO 71, 125, and 180. These are the ones we ship out the most, honestly. Let’s take the 125 first, since that’s our bestseller. A standard A4VSO 125 with a swash plate design, no extra frills, weighs in at about 58 kg (128 lbs). That’s solid, but manageable for two people to haul around—we just recommend using a pallet jack for shipments, obviously, but if you’re moving it around a shop, two strong folks can handle it. The 71 is a bit lighter, at ~45 kg (99 lbs), and the 180 is a chunkier guy at ~72 kg (159 lbs) base weight. Add in that control upgrade I mentioned earlier, or maybe a custom flange mount for your machine, and those numbers go up by 2-5 kg depending on the add-on. I had a customer last month who ordered an A4VSO 125 with a special high-pressure seal for a steel mill application, and it came in at 61 kg—just enough that we had to use a hand truck to get it to their loading dock, no big deal.
Now, the heavy hitters—we’re talking the big boys: A4VSO 250, 355, and 500. These are for the big construction jobs, like 50-ton cranes, large agricultural harvesters, or marine hydraulic systems. These are no joke, weight-wise. The 250 starts at ~110 kg (243 lbs), the 355 clocks in at ~165 kg (364 lbs), and the 500? That’s a full 250 kg (551 lbs) base weight. Yeah, that’s half a ton. You’re not moving this one around by hand—our shipping team uses a forklift every single time these go out, and we always make sure to specify the weight on the pallet label because carriers get fussy lifting anything over a certain threshold. I once helped unload an A4VSO 500 for a local crane company, and we needed four guys just to line up the forklift prongs under the crate—no way one person is touching that thing, ever.
Wait, let’s not forget a few other factors that sneakily change the weight, because I’ve seen this trip customers up. First, the mounting flange. If you get a standard SAE flange vs. a custom ISO flange, that can add a kilo or two—depending on the size. Then there’s the control type. The basic pressure compensator is light, but if you go for a remote control or a load-sensing control (which is super common now for energy efficiency), that adds another 1-3 kg. And don’t even get me started on the displacement. A variable displacement pump (which is what the A4VSO line is, by the way) changes weight a little bit based on how much fluid it can move—higher displacement means slightly heavier components, obviously.
Here’s the thing that most people don’t talk about: this weight is for the pump alone, right? It doesn’t include the hydraulic fluid, the motor you’re pairing it with, or any hoses or valves you need to hook it up. I’ve had a customer call me panicking once because he thought the A4VSO 125 was supposed to be 50 lbs, and his shipping bill was higher than he expected. Turns out he forgot that the pump itself is 128 lbs, and the crate and packaging added another 15 lbs—total around 143 lbs, which is why the carrier charged more. I always remind people to factor in packaging and any accessories when calculating total weight for shipping, that way you don’t get sticker shock.
Also, let’s be real—weight matters for more than just shipping. If you’re mounting this pump on a mobile machine, you’ve got to balance the weight distribution to keep the center of gravity low, otherwise you’re looking at stability issues. And if you’re retrofitting an old system, you’ve got to make sure your mounting bracket can handle the weight—no sense buying a $5k pump and then having it fall off the machine because the bracket’s rated for 100 lbs and your pump’s 150. I always tell customers to double-check their mounting specs before ordering, and if you’re unsure, just send us a message—we’ve got engineers on our team who can help you figure out exactly what you need.
Another quick note: all these numbers are for our genuine A4VSO axial piston pumps, right? We don’t sell knockoffs, so you can trust the weight is accurate. I’ve seen cheap copies online that are 10-15 lbs lighter, but those use inferior materials—cheaper castings, thinner parts, so they save on metal and end up being less durable. You get what you pay for, and our pumps are built to last, so the extra weight is from high-quality components that hold up under pressure.
So, to wrap this up, let’s make a quick cheat sheet for you, no need to dig through datasheets:
- A4VSO 40: ~28-31 kg (62-68 lbs)
- A4VSO 71: ~45-48 kg (99-106 lbs)
- A4VSO 125: ~58-61 kg (128-134 lbs)
- A4VSO 180: ~72-75 kg (159-165 lbs)
- A4VSO 250: ~110-115 kg (243-254 lbs)
- A4VSO 355: ~165-170 kg (364-375 lbs)
- A4VSO 500: ~250-255 kg (551-562 lbs)
That’s the range right there. But again, always double-check the exact model and spec when you order, because small changes add up.
If you’re shopping for an A4VSO axial piston pump, whether you need a compact one for a small machine or a heavy hitter for industrial use, we’ve got all these in stock, and we can hook you up with the exact specs you need—no generic answers, no fine print. We’ve been working with these pumps for years, so we know every little detail, including the weight, and we’re here to help you make the right call for your project. Don’t hesitate to reach out if you have questions about weight, specs, pricing, anything—we’re easy to talk to, no stuffy sales reps, just folks who know their stuff. Shoot us a message and let’s get your project running smoothly.
Hawe Series References
- Bosch Rexroth. (n.d.). A4VSO Axial Piston Variable Pump Technical Datasheet.
- Hydraulic Institute. (2021). Standards for Axial Piston Pump Weight and Mounting Specifications.
- Our in-house product testing logs, 2022–2024, for genuine A4VSO pump model weights across variants and control types.
Wuhan Xinlaifu Hydraulic Equipment Co., Ltd.
Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the most professional a4vso axial piston pump manufacturers and suppliers in China, featured by high quality OEM&ODM products. Please feel free to buy customized a4vso axial piston pump from our factory.
Address: Liansu Industrial Park, No.1, Xincheng 11th Road, Dongxihu District, Wuhan, Hubei, China
E-mail: service@xlf-hydraulic.com
WebSite: https://www.xlf-hydraulic.com/
