The AirTAC SDA50X140H 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 SDA50X140H is a double-acting, single-rod compact cylinder featuring a 50 mm bore and a 140 mm stroke. Because this stroke exceeds the 130 mm standard maximum for this bore size, it is produced as a made-to-order unit. It delivers a robust 981.7 N push force at 0.5 MPa, while the short riveted body design significantly reduces axial mounting depth compared to conventional round-body cylinders. This specific SKU includes an H designation, meaning it uses fluororubber (FKM) seals for enhanced high-temperature and oil resistance.
The bore utilizes a hard-anodized inner wall and a two-way piston seal. Instead of an adjustable air cushion, deceleration at the stroke ends is handled by a fixed NBR bumper. Note that this configuration omits the piston magnet, so it cannot directly host AirTAC reed or electronic switches without selecting the -S variant. The PT1/4 port and 20 mm rod ensure reliable pneumatic performance up to 1.0 MPa.
| Model | AirTAC SDA50X140H 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).
Secures heavy cast iron engine blocks during machining operations, utilizing the 981.7 N push force and FKM seals to withstand cutting fluid exposure.
Actuates a routing mechanism on a packaging line, where the compact riveted body saves valuable axial space along the conveyor frame.
Pushes finished stamped metal parts out of a hydraulic press, relying on the 140 mm stroke to clear the die area completely.
When sizing this actuator, consider stepping down to the SDA40, which provides 628.3 N of push force at 0.5 MPa, or moving up to the SDA63, which yields 1558.6 N at the same pressure. Keep in mind that a standard compact cylinder does not hold its position if air pressure is lost or the valve is centered; the piston will drift, and the fixed bumper only decelerates it near the end of travel. For applications requiring position holding, an external rod lock or pilot-operated check valve is required.
To order, confirm your requirements for the 50 mm bore, 140 mm non-standard stroke, PT1/4 port, and the lack of a sensor magnet. Also specify the female M10x1.5 rod-end thread (or male M18x1.5 if modified) and the FKM seal option for your operating environment.
Quick checklist
This double-acting cylinder provides 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 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the operational speed spans 30-500 mm/s.
No, the piston drifts if air is lost or the valve is centered; an external rod lock or pilot-operated check valve is needed to hold a load. Additionally, it uses a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion, so high-speed applications may require an external shock absorber.
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