The AirTAC AirTAC SDA50X40B Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 40mm 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 SDA50X40B 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. Its riveted assembly significantly reduces axial mounting depth compared to conventional round-body units, saving valuable machine footprint in tight spaces. The unit operates at speeds between 30-500 mm/s and features a hard-anodized bore with a two-way piston seal.
This specific SKU includes a male M18x1.5 threaded piston rod for robust mechanical coupling to your load. End-stops rely on a fixed NBR bumper rather than an adjustable air cushion, meaning operators must slow the approach or add external shock absorbers for high-energy cycles. Because this configuration lacks the -S magnet, it cannot support magnetic sensing without altering the build.
| Model | AirTAC SDA50X40B Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 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. |
| ×40 | 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).
Drives the folding mechanism on continuous carton packaging lines, utilizing the 40 mm stroke and male M18x1.5 rod to securely fold heavy cardboard flaps prior to sealing.
Actuates a routing gate on a 50 kg capacity logistics conveyor, where the 981.7 N push force easily redirects loaded pallets without excessive axial footprint.
Pushes finished plastic parts out of an injection molding fixture, taking advantage of the fixed NBR bumper to absorb the repetitive impact at the end of the 40 mm extension.
When sizing this unit, consider stepping down to the SDA40, which provides 628.3 N of push at 0.5 MPa, or moving up to the SDA63, which yields 1558.6 N at the same pressure. For this 50 mm bore, a safe working load is approximately 589 N (about 60% of the 981.7 N figure), translating to a vertical lift capacity of roughly 50 kg with a 2:1 safety margin. Keep in mind that a plain actuator will drift and cannot hold a load if air pressure drops or the valve is centered; maintaining vertical position requires an external rod lock or a pilot-operated check valve. To order, confirm the 50 mm bore, 40 mm stroke, PT1/4 port, male M18x1.5 rod thread, and the absence of a sensor magnet.
Quick checklist
This double-acting 50 mm bore cylinder generates 981.7 N push and 824.7 N pull at 0.5 MPa, increasing to 1374.4 N push and 1154.5 N pull at 0.7 MPa. The theoretical maximum push force is 200 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, has a proof pressure of 1.5 MPa, and functions in temperatures from -20 to +70 C.
No, it uses a fixed NBR bumper at each end to decelerate the stroke, which is not a field-adjustable air cushion or a locking brake. Additionally, because this SKU lacks the -S option, it has no piston magnet and cannot accept AirTAC reed or electronic switches; you must select the -S variant for position feedback.
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