The AirTAC AirTAC SDA16X55S Compact Cylinder | 16mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø16mm bore and 55mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA16X55S is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. It generates 100.5 N of push force and 86.4 N of pull force at 0.5 MPa. By utilizing a short riveted body that permanently joins the barrel, rear cover, piston, and rod, this unit achieves an exceptionally small axial length that standard round-body or profile cylinders cannot match.
This specific model includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. The 16 mm bore features a 6 mm rod, an M5x0.8 air port, and a 55 mm stroke. End-of-travel deceleration is handled by a fixed NBR bumper at each end, which absorbs impact energy but is not a field-adjustable air cushion.
| Model | AirTAC SDA16X55S Compact Cylinder | 16mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø16 mm |
| Stroke | 55 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 50 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 | 101 N | 86 N |
| 0.7 MPa | 141 N | — |
| Max (@1.0 MPa) | 21 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. |
|---|---|
| 16 | 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).
Provides the 100.5 N extend force needed to plunge a routing bit into printed circuit boards, with the 55 mm stroke clearing guide rails.
Pushes corrugated cardboard flaps into position at high cycling rates, benefiting from the 30-500 mm/s speed range and fixed NBR end stops.
Moves a volumetric dispensing head precisely over reagent trays where axial mounting space is strictly limited by adjacent analytical modules.
When sizing this 16 mm bore actuator, evaluate your force margins in both directions. Stepping down to the SDA12 reduces the push output to 56.5 N at 0.5 MPa, while stepping up to the SDA20 increases it to 157.1 N at 0.5 MPa. A practical safe working load is roughly 60 N (about 60% of the 100.5 N figure), allowing a vertical lift of approximately 5.1 kg with a 2:1 safety margin.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end and acts as neither a lock nor a brake. To hold a load securely without live pressure, incorporate an external rod lock or a pilot-operated check valve. When ordering, confirm the 16 mm bore, 55 mm stroke, M5x0.8 port, female M3x0.5 rod thread, and the required -S magnet option.
Quick checklist
At 0.5 MPa, this 16 mm bore cylinder provides 100.5 N push and 86.4 N pull. At 0.7 MPa, it provides 140.7 N push and 121 N pull. The theoretical maximum push is 21 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
No, the SDA series relies on a fixed NBR bumper at each end to decelerate the piston near stroke completion. This bumper is not a field-adjustable air cushion. For high-speed or high-energy loads, you should slow the approach speed or install an external shock absorber.
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