When you're shopping in hydraulics and pneumatics, choosing the right air cylinder usually comes down to three things: how far the piston needs to travel, how much space you have around the machine, and what you want to spend. The four cylinders here span from a compact 16mm bore with a 50mm stroke to a 5-inch bore with a 15-inch stroke, and their prices range from $24.37 to $77.17. That range covers very different jobs, so your first step is to sort out which dimension matters more: bore for force, stroke for travel, or both.
Quick take
All four are double-acting pneumatic cylinders, so they all use air pressure for extension and retraction. The BAOMAIN SC125x380 is the biggest cylinder here, but it is also the priciest. The Bimba M-0410-DPY gives you a 10-inch stroke with a small 3/4-inch bore. The SC32x100 is a middle-of-the-road standard cylinder, and the SWZHAI mini is the smallest of the four. For many users, the SC32x100 offers the easiest balance of size and price, while the Bimba wins if you need to reach farther with a slim cylinder.
Price comparison
The table below shows the listed price and relative price position of each cylinder.
| Product | Listed Price | Price Bar | Best Fit |
|---|---|---|---|
| Bimba M-0410-DPY | $39.99 | Long reach, compact bore | |
| BAOMAIN SC125x380 | $77.17 | Maximum bore and stroke | |
| SC32x100 | $28.72 | Standard automation | |
| SWZHAI Mini 16mm | $24.37 | Small spaces, fittings included |
Decision matrix
| If you need... | The stand-out choice is... |
|---|---|
| The longest stroke and largest bore | BAOMAIN SC125x380 |
| A 10-inch stroke without a large bore | Bimba M-0410-DPY |
| A standard 4-inch stroke and 1-1/4-inch bore | SC32x100 |
| A compact cylinder for small spaces | SWZHAI Mini 16mm |
Product notes
Bimba M-0410-DPY Double Acting Pneumatic Air Cylinder
The Bimba M-0410-DPY is the long-reach option with a slim profile. Its 3/4-inch bore keeps the diameter small while the 10-inch stroke lets the piston travel a significant distance. It is a single-rod cylinder for compressed air, and it comes from Bimba. The cylinder is new, but it is without original packaging, so the condition is the main thing to weigh. If you need to reach across a wide gap without taking up much cross-sectional space, this cylinder gives you exactly that combination.
BAOMAIN Pneumatic Air Cylinder 5 Inch Bore 15 Inch Stroke SC125x380
The BAOMAIN SC125x380 is the largest cylinder in the set, with a 5-inch bore and a 15-inch stroke. It uses an aluminum-alloy body and a self-lubricating bearing for low-maintenance operation. This is the cylinder to choose when your application needs the maximum travel distance and the largest bore available here. It is also the most expensive cylinder in this comparison, so it is only worth considering if the extra size actually serves your air system. The condition is new open-box.
Pneumatic Air Cylinder 1-1/4 Inch Bore 4 Inch Stroke SC32x100
The SC32x100 is a standard cylinder with a 1-1/4-inch bore and a 4-inch stroke. Its aluminum-alloy body and self-lubricating bearing are designed for low-maintenance use, and the model name is Sc32X100. This is the most balanced option for typical automation where a 4-inch stroke is enough. It does not have the reach of the Bimba or the BAOMAIN, but it is also less expensive than both. For a straightforward cylinder that sits in the middle of the group, this one is the easiest call.
Air Cylinder 16mm Bore 50mm Stroke, Mini Air Pneumatic Cylinder Double Action Si
The SWZHAI mini cylinder is the smallest and most affordable option here. With a 16mm bore and a 50mm stroke, it is built for small fixtures and light automation. It includes a Y connector and four pneumatic quick fittings, which is a helpful extra for small builds. The small size is both the reason to choose it and the reason to skip it: it fits into tight spots, but its 50mm stroke is much shorter than any of the other cylinders in this group. If you only need a short stroke and a low price, this is the one.
Final recommendation
Start by looking at your travel requirement. If you need the most expansive linear motion, the BAOMAIN SC125x380 is the go-to. If you want a long stroke but want to keep the cylinder diameter slim, the Bimba M-0410-DPY is the right fit. For a standard automation task that doesn't need long travel, the SC32x100 is the most balanced choice. And when space is tight and budget is a concern, the SWZHAI mini cylinder offers the lowest price and comes with quick fittings to get you moving.
