Quick Verdict
If your job needs a long, powerful push and you have room for a larger component, the SC 100 x 450 is the more capable choice. If your setup is tight and the work is light, the 16mm mini cylinder is the practical pick. The decision mainly comes down to how much reach and force you actually need.
At a Glance
| Product | Listed Price | Bore | Stroke | Action |
|---|---|---|---|---|
| Air Cylinder Pneumatic Standard Cylinder SC 100 x 450, Bore 4" Stroke 18 | USD 64.17 | 4 in | 18 in | Double-Acting |
| Air Cylinder 16mm Bore 50mm Stroke, Mini Air Pneumatic Cylinder Double Action Si | USD 24.37 | 16 mm | 50 mm | Double-Acting |
Where Each Product Wins
TECHTONGDA SC 100 x 450: long stroke and larger bore. The 4-inch bore and 18-inch stroke give it the ability to move bigger loads over a longer distance. The aluminum alloy body is built for demanding environments, and the 50-800mm/S piston speed range adds flexibility.
SWZHAI 16mm mini cylinder: compact and light-duty. The small body fits into tight spaces and handles short pushes. Its bidirectional sealing structure helps reduce air leakage, and the included Y connector and quick fittings make it easy to wire into a small pneumatic circuit.
Product Notes
Air Cylinder Pneumatic Standard Cylinder SC 100 x 450, Bore 4" Stroke 18
TECHTONGDA's SC 100 x 450 is a standard pneumatic cylinder built for heavier pneumatic work. The high precision aluminum alloy body is described as anticorrosive and high temperature resistant, and the operating temperature range of -20 to 80°C supports use in demanding environments. Piston speed is rated at 50-800mm/S, which covers a useful range for many automated processes. The reason to favor it is the strong force available from the larger format, especially when you need to move sizable parts. The main limitation is that the M20X1 port size may not match every existing fitting, so plan for possible adapters or replacement connectors.
Air Cylinder 16mm Bore 50mm Stroke, Mini Air Pneumatic Cylinder Double Action Si
SWZHAI's mini air cylinder is aimed at small pneumatic assemblies. The bidirectional sealing structure is meant to reduce air leakage, which matters when you are working with compact cylinders and lower air volumes. Inside the package you get one cylinder, one Y connector, and four pneumatic quick fittings, so the basic connections are included from the start. Where it makes sense is in tight spaces and low-force applications where a big cylinder would be overkill. The trade-off is that the limited size and range cannot deliver the force or travel of a full-size standard cylinder, so keep it to light pushing and positioning tasks.
Final Choice by Use Case
For heavy pushing and long travel: Choose the TECHTONGDA SC 100 x 450. It carries the higher listed price of USD 64.17, and its larger format is built for heavier pneumatic loads. The $39.80 price spread over the mini makes sense when your application needs that extra capability.
For compact and simple circuits: Choose the SWZHAI 16mm mini cylinder. At USD 24.37, it is the lower-priced option and its included fittings get you started quickly. Use it where space is tight and the workload stays light.
