The AirTAC AirTAC SDA63X55SB Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm 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 SDA63X55SB is a double-acting, single-rod compact cylinder engineered to deliver a robust 1558.6 N push force at 0.5 MPa. Its short riveted body design significantly reduces axial mounting depth, offering a distinct footprint advantage in tight machine layouts where longer profile or round-body units cannot fit. The unit includes a built-in piston magnet for position sensing and a male M18x1.5 threaded rod end for secure load coupling.
This 63 mm bore model operates with a PT1/4 air port and relies on a fixed NBR bumper at each end to decelerate the stroke. Because this bumper is not an adjustable air cushion, high-energy cycles may require an external shock absorber or a slowed approach speed. The integrated magnet supports AirTAC reed or electronic switches, fitting neatly into the body's sensor grooves for precise end-of-stroke detection.
| Model | AirTAC SDA63X55SB Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | 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).
Secures machining pallets on a CNC milling line, utilizing the 1558.6 N push force to lock heavy fixtures in place during high-speed spindle operations.
Raises and lowers product diverter gates in a corrugated box packaging facility, where the short riveted body saves valuable axial space within the conveyor frame.
Drives a secondary ejection arm on an injection molding machine, using the male M18x1.5 rod thread to attach the tooling and cycle parts out of the mold cavity.
Selecting this 63 mm bore provides a theoretical maximum push of 318 kgf at 1.0 MPa. If your application requires less force, the smaller SDA50 offers 981.7 N of push at 0.5 MPa, while stepping up to the SDA80 yields 2513.3 N at the same pressure. A safe working load is approximately 935 N (about 60% of the 1558.6 N figure at 0.5 MPa), translating to a vertical lift capacity of roughly 79.4 kg with a 2:1 safety margin.
When ordering, confirm the 63 mm bore, 55 mm stroke, PT1/4 port, and the SB options (built-in magnet and male M18x1.5 rod thread). Keep in mind that a plain compact cylinder does not hold its load if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the stroke end. For suspended or vertical loads that must be held without live pressure, you must add an external rod lock or a pilot-operated check valve.
Quick checklist
The SDA63X55SB generates a push force of 1558.6 N and a pull force of 1401.5 N at 0.5 MPa. At 0.7 MPa, the push increases to 2182.1 N. The theoretical maximum push is 318 kgf at the maximum operating pressure of 1.0 MPa.
This cylinder uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits. It is not an adjustable air cushion, so for high-speed or high-energy cycles, you should slow the approach speed or install an external shock absorber to prevent damage.
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