The AirTAC AirTAC SDA50X20SN Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 20mm 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 SDA50X20SN is a double-acting single-rod compact cylinder engineered to deliver 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth compared to traditional round-body units, making it highly effective for machinery with tight spatial constraints. The 50 mm bore features a hard-anodized inner wall and a robust 20 mm piston rod.
This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, effectively decelerating the piston near the stroke limits. Operating at speeds of 30-500 mm/s, it is designed for standard 0.15-1.0 MPa pneumatic systems.
| Model | AirTAC SDA50X20SN Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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. |
| ×20 | 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).
Provides compact 981.7 N push force for ejecting plastic parts from injection molds where machine footprint limits axial cylinder length.
Drives a 20 mm stroke to fold corrugated carton flaps at high speed, utilizing the integrated magnet for precise position confirmation.
Acts as a short-travel stopper arm on palletizing lines, handling heavy loads with a 50 kg vertical lift capacity at a 2:1 safety margin.
When sizing this actuator, evaluate your force requirements carefully. Stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, whereas stepping up to the SDA63 provides 1558.6 N. The SDA50X20SN provides a safe working load of roughly 589 N (about 60% of its 981.7 N capacity at 0.5 MPa) and can vertically lift approximately 50 kg with a 2:1 safety margin. To finalize your order, confirm the 50 mm bore, 20 mm stroke, PT1/4 port, built-in magnet, and the default female M10x1.5 rod-end thread. Note that an uncommanded piston drift will occur if air pressure is lost, as the fixed bumper only decelerates the end of travel and does not function as a locking brake; utilize an external rod lock for suspended loads.
Quick checklist
This double-acting cylinder delivers a push force of 981.7 N and a pull force of 824.7 N at 0.5 MPa. At 0.7 MPa, the push increases to 1374.4 N. The theoretical maximum push is 200 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, a plain compact cylinder will drift if air pressure is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the end of the stroke and does not act as a lock or brake. An external rod lock or pilot-operated check valve is required to hold suspended loads.
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