The AirTAC AirTAC SDA50X120SH Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 120mm 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 SDA50X120SH is a double-acting, single-rod compact cylinder engineered with a 50 mm bore and a 120 mm stroke. It delivers a robust 981.7 N of push force at 0.5 MPa, making it suitable for medium-duty automation tasks. This specific configuration includes an -S piston magnet for position sensing and an -H fluororubber (FKM) seal variant, providing enhanced resistance to higher temperatures and oily environments compared to standard NBR seals.
Designed to minimize axial mounting depth, the short riveted body integrates the barrel, rear cover, piston, and rod into a highly space-efficient package. The hard-anodized bore houses a two-way piston seal, while integrated body grooves accept AirTAC magnetic reed or electronic switches. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs impact energy but is not a field-adjustable air cushion. Operating speed ranges from 30-500 mm/s.
| Model | AirTAC SDA50X120SH Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 120 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. |
| ×120 | 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).
Routes plastic containers on a high-speed packaging conveyor using the full 120 mm stroke, relying on the FKM seals to withstand occasional lubrication overspray.
Acts as a pneumatic stop for 40 kg aluminum pallets in a vertical lift station, safely operating within the 50 kg computed lift margin.
Drives a mechanical arm to fold corrugated carton flaps prior to tape sealing, where the compact riveted body saves valuable machine footprint.
When sizing this actuator, evaluate your force requirements against its 981.7 N push capacity at 0.5 MPa. If you need less force, stepping down to the SDA40 bore yields 628.3 N at the same pressure; conversely, scaling up to the SDA63 provides 1558.6 N for heavier payloads. For this 50 mm bore, the computed safe working load is approximately 589 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 50 kg with a 2:1 safety margin. Keep in mind that a standard double-acting cylinder does not hold position when air pressure is lost or the valve is centered—the piston will drift, and the fixed bumper only decelerates near stroke end. For suspended loads, incorporate an external rod lock or pilot-operated check valve. To order, confirm the 50 mm bore, 120 mm stroke, PT1/4 port, built-in magnet (-S), FKM seals (-H), and the female M10x1.5 rod-end thread.
Quick checklist
This 50 mm bore 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 force increases to 1374.4 N. The theoretical maximum push force is 200 kgf at 1.0 MPa.
No, the SDA series uses a fixed NBR bumper at each end to decelerate the piston. It is not an 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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