The AirTAC AirTAC SDA50X20SH Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 20mm 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 SDA50X20SH is a double-acting, single-rod compact cylinder engineered around a 50 mm bore and a 20 mm stroke. It generates a push force of 981.7 N and a pull force of 824.7 N at 0.5 MPa. The riveted unibody design merges the barrel, rear cover, piston, and rod to drastically reduce axial mounting depth compared to conventional round-body units. Equipped with a PT1/4 port and a Ø20 mm piston rod, it incorporates an FKM (fluororubber) seal variant to withstand elevated thermal and oil-exposure demands.
This unit includes a built-in piston magnet (-S) for direct compatibility with AirTAC reed or electronic switches, which seat neatly into the machined grooves wrapping the body. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or utilize an external shock absorber for high-energy cycles. The female M10x1.5 rod-end thread couples firmly to loads, though side loading should be strictly avoided on this short-stroke compact body.
| Model | AirTAC SDA50X20SH Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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. |
| ×20 | 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).
Ideal for pushing PET bottle lanes on packaging conveyors where the 981.7 N thrust easily redirects filled containers without overwhelming the frame.
The FKM seals survive oily machine environments, while the short 20 mm stroke provides rapid, precise opening and closing of secondary bar puller grippers.
Deploys rapidly to fold cardboard flaps on automated palletizing lines, utilizing the compact body to fit within tight vertical gantry clearances.
When sizing this actuator, evaluate your force requirements carefully. If you need less thrust, stepping down to the SDA40 yields 628.3 N of push force at 0.5 MPa; conversely, scaling up to the SDA63 provides a substantial 1558.6 N. For the SDA50X20SH, a safe working load is approximately 589 N (about 60% of the 981.7 N figure at 0.5 MPa), translating to a vertical lift capacity of roughly 50 kg with a 2:1 safety margin. Keep in mind that a standard compact cylinder will drift and cannot hold a load if air pressure drops or the valve is centered—the fixed bumper only decelerates the stroke end and acts as neither a lock nor a brake. For suspended loads, integrate an external rod lock or a pilot-operated check valve. To order, confirm the 50 mm bore, 20 mm stroke, PT1/4 port, female rod thread, the -S magnet requirement, and the -H FKM seal specification.
Quick checklist
This 50 mm bore 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 is 1374.4 N. The theoretical maximum push force is 200 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston near stroke termination; this is not an adjustable air cushion, so high-speed applications may require external shock absorption. The included -S piston magnet allows you to mount AirTAC reed or electronic switches directly into the body grooves for precise position detection.
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