If you're adding a pneumatic cylinder to an automation build, the first fork in the road is travel. Do you need a long-stroke cylinder that can cover a lot of distance, or a compact unit that tucks into a small fixture? The BAOMAIN Pneumatic Air Cylinder SC125x380 and the SWZHAI Mini Air Cylinder are both double-acting cylinders, so both push and pull. But they are aimed at very different parts of a machine. This head-to-head helps you match the right one to your travel, space, and budget.
Quick Verdict
If your automation work calls for long-travel motion and a full-scale pneumatic cylinder, the BAOMAIN SC125x380 is the one to build around. If your setup is compact and you want a mini cylinder with connectors and quick fittings included, the SWZHAI model is the more practical fit. The $52.80 spread between their listed prices points to a size-class decision more than a minor spec difference.
At a Glance
| BAOMAIN SC125x380 | SWZHAI Mini Cylinder | |
|---|---|---|
| Price | USD 77.17 | USD 24.37 |
| Bore / stroke | 5" bore, 15" stroke | 16mm bore, 50mm stroke |
| Design | Double-acting | Double-acting |
| Finish / condition | Silver / New - Open box | Red / New |
Where Each Product Wins
BAOMAIN SC125x380 wins for long-travel industrial automation. Its self-lubricating bearing keeps the piston rod operating without added lubrication, so this is a low-maintenance pick for consistent machine cycles. The tradeoff is the larger mounting footprint you need to plan around.
SWZHAI Mini Cylinder wins for compact circuits and quick setup. It includes a Y connector and four pneumatic quick fittings, so you can get a small pneumatic circuit moving without sourcing extra parts. Its bidirectional sealing structure with high-quality seals is aimed at reducing air leakage.
Product Notes
BAOMAIN Pneumatic Air Cylinder 5" Bore 15" Stroke SC125x380
If your machine cycle calls for a long, controlled push-and-pull motion, this cylinder gives you room to work. The self-lubricating bearing helps the piston rod operate without added lubrication, and the aluminum alloy construction is built for demanding industrial environments. The main caveat is the condition: it is New - Open box, so inspect it before installation. You also need to reserve space for a 5" bore and a full 15" of stroke, which makes this a poor fit for tight enclosures. Choose it for the projects where travel distance is the priority.
Air Cylinder 16mm Bore 50mm Stroke, Mini Air Pneumatic Cylinder Double Action Si
This mini cylinder is for jobs where every inch of space counts. The 16mm bore and 50mm stroke keep it small, while the bidirectional sealing structure and high-quality seals are designed to improve sealing performance and reduce air leakage. It arrives with one Y connector and four pneumatic quick fittings, which is handy for getting a small circuit going quickly. The limitation is the small envelope: with only 50mm of stroke, it cannot cover the same travel as the larger BAOMAIN model, so it is best for short-stroke or space-constrained tasks. For those jobs, it is a simple, lower-cost choice.
Final Choice by Use Case
Choose the BAOMAIN SC125x380 when your automation axis needs the travel and presence of a full-size cylinder. Choose the SWZHAI mini cylinder when your fixture is compact, the required stroke is short, and the bundled accessories are a useful bonus.
