The AirTAC AirTAC SDA50X20H 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 SDA50X20H is a double-acting single-rod compact cylinder engineered with a 50 mm bore and a 20 mm stroke. By utilizing a short riveted body that permanently joins the barrel, rear cover, piston, and rod, this unit drastically reduces axial mounting depth compared to conventional round-body designs. It delivers a robust 981.7 N of push force at 0.5 MPa, making it highly effective for high-impact positioning tasks.
This specific SKU features an H-designation fluororubber (FKM) seal variant, providing enhanced resistance to higher temperatures and oily environments. The bore inner wall is hard-anodized for longevity, while end-of-travel deceleration is handled by a fixed NBR bumper. Note that this configuration lacks a piston magnet, so it cannot directly host AirTAC reed or electronic switches without the -S option.
| Model | AirTAC SDA50X20H 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).
Secures heavy cast iron engine blocks during machining operations, utilizing the 981.7 N push force to maintain rigid clamping against cutting forces.
Indexes empty wooden pallets into high-speed packaging lines, where the compact riveted body saves critical axial space within the conveyor framework.
Drives short-stroke ejection pins on plastic molding machinery, leveraging the FKM seals to withstand elevated ambient temperatures near the mold halves.
When sizing this actuator, evaluate your force requirements carefully. Stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, whereas stepping up to the SDA63 provides 1558.6 N. The SDA50X20H provides a safe working load of roughly 589 N (about 60% of its 981.7 N capacity at 0.5 MPa), translating to a vertical lift capability of approximately 50 kg with a 2:1 safety margin. If your mechanism must maintain vertical position during air loss or valve centering, be aware that the piston will drift; the fixed bumper only decelerates near stroke end and acts as neither a lock nor a brake. An external rod lock or pilot-operated check valve is required for secure load holding. When ordering, confirm the 50 mm bore, 20 mm stroke, PT1/4 port, female M10x1.5 rod-end thread, and the FKM seal specification.
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, push increases to 1374.4 N. The theoretical maximum push 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 it operates at speeds between 30-500 mm/s.
No, this specific SKU does not include a piston magnet, meaning it cannot trigger reed or electronic switches. You would need the SDA50X20HS variant for sensing capabilities. Additionally, end-stop deceleration relies strictly on a fixed NBR bumper, which is not an adjustable air cushion, so external shock absorbers may be needed for high-speed approaches.
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