The AirTAC AirTAC SDA50X120H 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 SDA50X120H is a double-acting, single-rod compact cylinder featuring a 50 mm bore and 120 mm stroke. It generates 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. This unit includes an FKM fluororubber seal variant, providing enhanced resistance to higher temperatures and oily environments compared to standard NBR. The hard-anodized bore and two-way piston seal ensure durable, long-lasting operation.
Its short, riveted body design integrates the barrel, rear cover, piston, and rod into a highly compact assembly, saving valuable axial mounting depth where a traditional round-body cylinder would not fit. The piston rod measures 20 mm in diameter, and the air port is PT1/4. End-stop deceleration is handled by a fixed NBR bumper, which slows the piston near the stroke extremes but is not an adjustable air cushion. This specific SKU lacks a piston magnet, so it cannot directly support magnetic position sensing.
| Model | AirTAC SDA50X120H 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).
Drives the cardboard flap folding arms on high-speed palletizing lines where the 981.7 N push force easily overcomes carton stiffness and the FKM seals withstand warm, lubricated plant air.
Actuates heavy stainless steel diverter gates on beverage conveyors, utilizing the 120 mm stroke to reroute glass bottle traffic while fitting within the machine's tight axial footprint.
Provides secondary ejection assistance on plastic injection molding machines, where the 20 mm rod handles the mechanical load and the FKM seals resist ambient heat radiating from the mold.
When sizing this unit, consider stepping down to the SDA40, which yields 628.3 N of push at 0.5 MPa, or moving up to the SDA63, which provides 1558.6 N at the same pressure. For the 981.7 N available at 0.5 MPa, the safe working load is approximately 589 N (about 60% capacity), translating to a vertical lift capability of around 50 kg with a 2:1 safety margin. To order, confirm the 50 mm bore, 120 mm stroke, PT1/4 port, female M10x1.5 rod-end thread, and the FKM seal option. Note that a plain compact cylinder does not hold its load if air pressure is lost or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the end of the stroke. For applications requiring position holding, an external rod lock or pilot-operated check valve is necessary.
Quick checklist
This 50 mm bore double-acting cylinder provides 981.7 N push and 824.7 N pull at 0.5 MPa. At 0.7 MPa, it yields 1374.4 N push and 1154.5 N pull. The theoretical maximum push is 200 kgf at 1.0 MPa. Operating pressure ranges from 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and the operational speed spans 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot support AirTAC reed or electronic switches. If you require position sensing, you must select the SDA50X120HS variant. Additionally, this model uses a fixed NBR bumper for end-stop deceleration rather than an adjustable air cushion.
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