Choosing a pneumatic cylinder for an automation project means matching bore size, stroke length, and build quality to the job you actually need done. The BAOMAIN SC125x380 enters that conversation with a 5-inch bore, a 15-inch stroke, and a price of $77.17. Whether you are retrofitting a machine or building a new fixture, this double-acting cylinder deserves a closer look.
Quick Verdict
For most linear-motion tasks that need a mid-size cylinder, the BAOMAIN SC125x380 is a solid pick. Its aluminum-alloy body keeps weight down while its self-lubricating bearing reduces maintenance. The double-acting design gives you controlled movement in both directions. The main catch is the open-box condition, so you'll want to plan for the possibility of minor cosmetic wear.
BAOMAIN Pneumatic Air Cylinder 5" Bore 15" Stroke SC125x380
Presented at $77.17, this cylinder is a double-acting unit with a consistent 5-inch bore and 15-inch stroke. The aluminum-alloy construction and self-lubricating bearing are the details that stand out: they point to a cylinder built for repeatable, low-maintenance operation in industrial automation. The silver rectangular body is straightforward to mount if you have the right brackets (though that's not included). Since this is listed as new open box, the cylinder itself is new, but the box has been opened.
Who It Suits
This cylinder fits projects where you need a reliable push-and-pull action across a fairly long stroke. The 5-inch bore is strong for lifting or pressing applications, and the 15-inch stroke gives you a wide range of motion. It's best for workshop setups, custom machinery, or automation upgrades where you already have compressed air and the space to swing a cylinder this size.
What Stands Out from the Listed Details
The self-lubricating bearing is the headline feature. You don't have to add oil to the piston rod, which is a genuine time-saver in daily operation. The double-acting design also means you get force in both directions, not just a spring return, so you can control extension and retraction separately. The aluminum body is another plus: it's corrosion-resistant and lighter than steel.
Meaningful Trade-offs
The obvious trade-off is the open-box condition. If you require pristine packaging for your records, this may not be the one. Also, a 5-inch bore cylinder needs a good amount of compressed air volume, so confirm your compressor can keep up. And because this is a specific stroke, you have to make sure 15 inches is exactly what your application needs-there's no adjusting that without changing the cylinder.
Bottom Line
The BAOMAIN SC125x380 is a practical choice for anyone needing a double-acting pneumatic cylinder with a generous stroke at a reasonable price. The low-maintenance bearing and aluminum build handle demanding conditions, and the open-box listing keeps the cost down. If the size matches your project, this is a no-nonsense way to get linear motion working.
