The AirTAC AirTAC SDA50X70S Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 70mm 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 SDA50X70S 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 merges the barrel, rear cover, piston, and rod to drastically reduce axial mounting depth, making it ideal for machinery where a standard round-body unit would protrude too far. The 50 mm bore features a hard-anodized inner wall and a two-way piston seal for reliable pneumatic performance.
This specific configuration includes the -S option, meaning it has a built-in piston magnet designed to interface with AirTAC reed or electronic switches housed in the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Operating at speeds between 30 and 500 mm/s, this unit utilizes a PT1/4 port and a 20 mm rod to support mid-weight industrial motion tasks.
| Model | AirTAC SDA50X70S Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 70 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. |
| ×70 | 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).
Actuates a routing flap on a logistics sorting line, utilizing the 981.7 N push force to swiftly redirect 30 kg cartons at speeds up to 500 mm/s.
Secures stretch wrap rolls in an automated packing station, where the 70 mm stroke and built-in magnet allow precise position verification via electronic switches.
Ejects formed sheet metal brackets from a stamping die, relying on the short riveted body to fit within tight press tooling clearances.
When sizing this model, consider stepping down to the SDA40, which provides 628.3 N of push at 0.5 MPa, or moving up to the SDA63, which yields 1558.6 N at the same pressure. For the SDA50X70S, the safe working load is approximately 589 N (about 60% of the 981.7 N figure), allowing for a vertical lift of roughly 50 kg with a 2:1 safety margin. To finalize your order, confirm the 50 mm bore, 70 mm stroke, PT1/4 port, female M10x1.5 rod-end thread, and the required -S magnet option.
Keep in mind that a standard compact cylinder does not hold its position if air pressure is lost or the directional valve is centered; the piston will drift. The fixed NBR bumper only decelerates the load near the stroke end and does not function as a locking brake. If your application requires vertical load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 981.7 N push and 824.7 N pull at 0.5 MPa, increasing to 1374.4 N push and 1154.5 N pull at 0.7 MPa. The theoretical maximum push force is 200 kgf at 1.0 MPa, with a proof pressure rating of 1.5 MPa.
No, the SDA50X70S uses a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion. Additionally, it does not hold a load on air loss; the piston drifts if pressure drops. For load holding, an external rod lock or pilot-operated check valve is required.
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