The AirTAC AirTAC SDA50X55SB 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 SDA50X55SB is a double-acting, single-rod compact cylinder engineered to deliver 981.7 N of push force at 0.5 MPa. Its riveted body construction significantly reduces axial mounting depth, making it highly effective for machinery where a standard round-body unit would simply not fit. The hard-anodized bore ensures smooth, low-friction operation throughout its 30-500 mm/s speed range.
This specific configuration includes an integrated piston magnet for direct mounting of AirTAC reed or electronic switches along the body grooves. It is equipped with a male M18x1.5 piston rod thread for robust load coupling, and relies on a fixed NBR bumper at each end to decelerate the stroke. Because this bumper is not an adjustable air cushion, operators should reduce approach speed or utilize external shock absorbers for high-energy loads.
| Model | AirTAC SDA50X55SB 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 a routing flap on a high-speed logistics conveyor, utilizing the 981.7 N extend force to reliably push 50 kg cartons onto secondary chutes.
Drives a mechanical clamping jaw in an end-of-line palletizer, where the short 55 mm stroke and male M18x1.5 rod secure film-wrapped product loads.
Provides a compact ejection stroke for plastic injection molding machines, saving valuable Z-axis height while delivering consistent 824.7 N retract force.
When sizing this unit, evaluate your force requirements carefully: stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, while moving up to the SDA63 provides 1558.6 N. At 981.7 N, this 50 mm bore achieves a safe working load of roughly 589 N (about 60 percent capacity) and can vertically lift approximately 50 kg with a 2:1 safety margin. If your application must maintain a load without live pressure, note that a standard cylinder will drift; an external rod lock or pilot-operated check valve is required for secure holding.
To order, confirm the 50 mm bore, 55 mm stroke, PT1/4 port, and the SB option package, which specifies both the built-in magnet and the male-thread piston rod end.
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. It operates on filtered air between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and functions in environments from -20 to +70 C.
No, the SDA series uses a fixed NBR bumper at each end to absorb impact, which is not an adjustable air cushion. For high-speed or high-mass applications, you should slow the approach speed or install an external shock absorber. Additionally, this SB configuration includes a built-in magnet for AirTAC reed or electronic switches and a male M18x1.5 rod thread.
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