The AirTAC AirTAC SDA50X140SB Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 140mm 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 SDA50X140SB is a double-acting, single-rod compact cylinder engineered to deliver 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. Because the 140 mm stroke exceeds the 130 mm standard limit for this 50 mm bore, this specific configuration is treated as a non-standard, made-to-order unit. The riveted body assembly drastically reduces axial mounting depth compared to conventional round-body cylinders, saving valuable machine footprint.
This model includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves, and a male M18x1.5 threaded piston rod (-B) for robust load coupling. Deceleration at the stroke ends relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach speed or add external shock absorbers for high-energy loads.
| Model | AirTAC SDA50X140SB Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 140 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. |
| ×140 | 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).
Pushes medium-weight cartons off a sorting line using the 981.7 N extend force, where the 140 mm stroke clears the guide rails completely.
Raises a 50 kg access flap on a packaging machine, matching the computed vertical lift capacity while keeping the overall frame thin.
Seats bearings into housings on an automated line, using the male M18x1.5 rod end to secure the tooling and the fixed NBR bumper to soften the end stop.
When sizing this actuator, stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, while stepping up to the SDA63 provides 1558.6 N, allowing you to scale thrust precisely to your application. Based on the 981.7 N push figure at 0.5 MPa, the computed safe working load is approximately 589 N (60% margin), translating to a vertical lift capacity of roughly 50 kg with a 2:1 safety factor. Keep in mind that a standard compact cylinder will drift and cannot hold a load if air pressure drops or the valve is centered; maintaining vertical positions requires an external rod lock or a pilot-operated check valve. To order, confirm the 50 mm bore, 140 mm non-standard stroke, PT1/4 port, built-in magnet, and male M18x1.5 rod end.
Quick checklist
This 50 mm bore double-acting cylinder generates 981.7 N push and 824.7 N pull at 0.5 MPa, and 1374.4 N push at 0.7 MPa. The theoretical maximum push force is 200 kgf at the maximum operating pressure of 1.0 MPa.
No, it uses a fixed NBR bumper at each end to decelerate the stroke, which is not a field-adjustable air cushion. Additionally, it does not hold its load if air is lost; the piston will drift unless you install an external rod lock or pilot-operated check valve.
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