The AirTAC AirTAC SDA50X120SB Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 120mm 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 SDA50X120SB is a double-acting single-rod compact cylinder engineered to deliver 981.7 N of push force at 0.5 MPa. Its riveted body design drastically reduces axial mounting depth compared to conventional round-body units, making it highly effective for machinery where space footprint is critical. The bore is hard-anodized and utilizes a two-way piston seal for reliable performance.
This specific configuration includes a built-in piston magnet for position sensing alongside a male M18x1.5 threaded rod end. The body features integrated grooves compatible with AirTAC reed or electronic switches. Instead of an adjustable air cushion, end-of-stroke deceleration is handled by a fixed NBR bumper at each end.
| Model | AirTAC SDA50X120SB Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 120 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. |
| ×120 | 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).
Pushes medium-weight cartons off a main conveyor belt line using the full 120mm stroke and 1374.4 N extend force at 0.7 MPa.
Raises a lower-tier palletizing gate with a safe vertical lift capacity around 50 kg, fitting into tight vertical machine envelopes.
Ejects formed plastic bottles from a blow molding station, utilizing the male M18x1.5 rod end for secure tooling attachment.
When sizing this unit, consider stepping down to the SDA40 which provides 628.3 N push at 0.5 MPa, or stepping up to the SDA63 which yields 1558.6 N push at 0.5 MPa. Based on the 981.7 N output at 0.5 MPa, the safe working load is approximately 589 N, allowing for a vertical lift of roughly 50 kg with a 2:1 safety margin. Confirm your ordering essentials: 50mm bore, 120mm stroke, PT1/4 port, male M18x1.5 rod thread, and the included magnetic piston.
Keep in mind that a standard compact cylinder does not hold its position if air pressure is lost or the valve is centered; the piston will drift. The fixed NBR bumper only decelerates the load near the stroke end and does not act as a locking brake. If your application requires static load holding, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 50mm bore double-acting cylinder provides 981.7 N push and 824.7 N pull at 0.5 MPa. At 0.7 MPa, push is 1374.4 N and pull is 1154.5 N. The theoretical maximum push force is 200 kgf at 1.0 MPa.
End damping is provided by a fixed NBR bumper, not an adjustable air cushion, so you may need an external shock absorber for high-energy impacts. Additionally, it will not hold a load unpowered; use an external rod lock or pilot-operated check valve for position holding.
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