The AirTAC SDA50X20S 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 SDA50X20S is a double-acting single-rod compact cylinder engineered to deliver a push force of 981.7 N and a pull force of 824.7 N at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into an exceptionally short axial footprint, outperforming round-body alternatives when mounting depth is restricted. The 50 mm bore features a hard-anodized inner wall and a two-way piston seal for prolonged operational life.
Equipped with a built-in piston magnet (the S option), this unit supports position detection via an AirTAC reed or electronic switch housed in the body grooves. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, effectively absorbing impact without adding length.
| Model | AirTAC SDA50X20S 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).
Provides a short 20 mm ejection stroke inside tight mold platens, utilizing the 981.7 N push force to knock finished plastic parts safely out of the cavity.
Drives compact folding arms on high-speed packaging lines where axial space is minimal, relying on the 824.7 N retract force to pull mechanisms back rapidly.
Secures circuit boards during automated electrical testing, using the built-in magnet to trigger an electronic switch and confirm full clamp engagement before probing.
When sizing this actuator, evaluate your force requirements against adjacent bores: stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, while upgrading to the SDA63 provides 1558.6 N. If your mechanism must maintain a vertical position during air loss or valve centering, note that a standard compact cylinder will drift; the fixed bumper only decelerates the end stop and does not act as a brake. An external rod lock or pilot-operated check valve is required to hold a load securely.
To finalize your order, confirm the 50 mm bore, 20 mm stroke, PT1/4 port thread, and the female M10x1.5 rod-end thread. This specific SDA50X20S variant includes the magnet for sensing, and operates at speeds between 30 and 500 mm/s.
Quick checklist
At 0.5 MPa, this double-acting cylinder provides 981.7 N of push and 824.7 N of pull. At 0.7 MPa, push increases to 1374.4 N and pull to 1154.5 N. The theoretical maximum push is 200 kgf at 1.0 MPa, which is the maximum operating pressure.
No, it uses a fixed NBR bumper at each end to decelerate the piston, not an adjustable air cushion. For high-speed or high-energy cycles, you should slow the approach speed or install an external shock absorber to prevent damage.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.