The AirTAC AirTAC SDA50X25SH Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 25mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA50X25SH is a double-acting, single-rod compact cylinder engineered for tight axial spaces. It generates 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. The short riveted body integrates the barrel, rear cover, piston, and rod, significantly reducing overall length compared to round-body alternatives. This space-saving footprint is ideal for machinery where mounting depth is restricted.
This specific configuration includes a built-in piston magnet (-S) for position sensing and fluororubber (-H) seals for enhanced thermal and oil resistance. The 50 mm bore features a 20 mm rod, PT1/4 air ports, and female M10x1.5 rod-end threads. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or utilize external shock absorbers for high-energy loads.
| Model | AirTAC SDA50X25SH Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Secures heavy aluminum workpieces onto CNC machining centers. The 981.7 N push force at 0.5 MPa ensures rigid holding during high-speed milling, while the compact depth fits within tight fixture towers.
Drives mechanical arms to fold corrugated carton flaps on automated packaging lines. The 25 mm stroke executes rapid, precise movements, and the FKM seals withstand lubricated shop air environments.
Acts as a pneumatic stop pin in layer palletizing systems to position heavy pallets. The built-in magnet triggers reed or electronic switches to confirm pin extension before the hoist descends.
When sizing this actuator, evaluate your force requirements carefully. Stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, while stepping up to the SDA63 provides 1558.6 N. The SDA50X25SH provides a safe working load of roughly 589 N (about 60% of its 981.7 N capacity) and can vertically lift approximately 50 kg with a 2:1 safety margin. To confirm your ordering essentials: specify the 50 mm bore, 25 mm stroke, PT1/4 port, female M10x1.5 rod thread, the -S magnet, and the -H FKM seal option.
Remember that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered. The piston will drift, and the fixed NBR bumper only decelerates the stroke near its end without acting as a mechanical lock. If your application demands position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, this double-acting cylinder provides 981.7 N of push force and 824.7 N of pull force. At 0.7 MPa, push increases to 1374.4 N. The theoretical maximum push is 200 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the operating speed spans 30-500 mm/s.
No, a standard SDA cylinder does not hold its position upon air loss or valve centering. The piston will drift, and the fixed NBR bumper only decelerates the rod near the stroke end; it is not a locking brake. To maintain a vertical load safely, you must add an external rod lock or a pilot-operated check valve to the pneumatic circuit.
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