The AirTAC AirTAC SDA50X55S Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 55mm 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 SDA50X55S is a double-acting, single-rod compact cylinder engineered to deliver a push force of 981.7 N and a pull force of 824.7 N at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth compared to standard round-body units, making it highly effective for machinery where space savings are critical. The 50 mm bore features a hard-anodized inner wall and a two-way piston seal for prolonged operational life.
Equipped with a built-in piston magnet (the S option), this unit is fully compatible with AirTAC magnetic reed or electronic switches fitted into the body grooves. End-of-stroke energy is managed by a fixed NBR bumper rather than an adjustable cushion, meaning operators should reduce approach speed or utilize external shock absorbers for high-mass loads. The 20 mm rod utilizes a female M10x1.5 thread, and the unit operates efficiently between 30 and 500 mm/s.
| Model | AirTAC SDA50X55S Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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. |
| ×55 | 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 routing gates on high-speed logistics conveyor lines, utilizing the 981.7 N push force to swiftly pivot heavy cardboard cartons onto secondary sorting chutes.
Deploys a tensioning head in automated end-of-line pallet strapping machinery, where the short riveted body conserves valuable vertical clearance within the steel framework.
Raises lower platens on small assembly presses, safely lifting components up to 50 kg thanks to a 2:1 safety margin on the available extending force.
Selecting this 50 mm bore provides a theoretical safe working load of roughly 589 N (about 60% of the 981.7 N push at 0.5 MPa), which translates to a vertical lift capacity of approximately 50 kg with a 2:1 safety margin. If your application requires less force, stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa. Conversely, if you need substantially more power, the SDA63 offers 1558.6 N at the same pressure. Remember that a standard double-acting cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered; maintaining vertical loads requires an external rod lock or a pilot-operated check valve. When ordering, confirm the 50 mm bore, 55 mm stroke, PT1/4 port, female rod thread, and the required magnetic sensor option.
Quick checklist
This double-acting cylinder generates 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 and the pull to 1154.5 N. The theoretical maximum push is 200 kgf at the maximum operating pressure of 1.0 MPa.
No, the piston will drift if air pressure is lost or the directional valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not act as a locking brake. To maintain position, you must integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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