When you're speccing a pneumatic actuator, the decision usually comes down to match: bore size, stroke length, and action type all have to line up with your air supply and the mechanical load you're moving. The TECHTONGDA SC 100 x 450 is a standard pneumatic cylinder designed to make that match simple for a specific range of applications.
Quick verdict
This double-acting cylinder from TECHTONGDA delivers a 4-inch bore and an 18-inch stroke in a standard package, priced at USD 64.17. It's a straightforward pick when your project already specifies those bore and stroke numbers.
Who it suits
If your pneumatic build calls for a 4-inch bore and 18-inch stroke, the SC 100 x 450 fits that spec directly. The double-acting operation means you can use air pressure to extend and retract, which simplifies control in many shop-built setups.
What stands out
The high precision aluminum alloy body is anticorrosive and high temperature resistant, which is useful in humid or warm shop environments. The piston speed range of 50-800 mm/s covers a wide variety of pneumatic motion needs, and the operating temperature range of -20~80°C is broad enough for most indoor industrial use. The small stroke error and good stability mean the cylinder moves consistently along its travel.
Meaningful trade-offs
The M20X1 port size is a specific thread, so confirm your fittings match or plan for an adapter. The temperature and speed limits are fixed: don't expect it to cycle faster than 800 mm/s or operate beyond -20~80°C. The single rod design also means the force balance differs between extension and retraction, which is normal but worth factoring into your load calculation.
Air Cylinder Pneumatic Standard Cylinder SC 100 x 450, Bore 4" Stroke 18
At USD 64.17, the main reason to choose this cylinder is the corrosion-resistant aluminum alloy body and the small stroke error and good stability. The limitation to plan around is the M20X1 port thread, which will dictate your fitting choices.
Bottom line
If your pneumatics project needs the specific configuration this TECHTONGDA SC 100 x 450 offers, it's a ready-made standard cylinder that matches the spec. Just confirm your air-line threads and keep the speed and temperature limits in mind, and it can be a suitable component in your hydraulics and pneumatics project.
