The AirTAC AirTAC SDA20X10SH Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 10mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA20X10SH is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly yields a very short axial length, delivering 157.1 N of push force at 0.5 MPa alongside a 10 mm stroke. The -H designation specifies a fluororubber (FKM) seal for heightened thermal and oil resistance, while the built-in magnet enables position detection.
This 20 mm bore unit relies on a fixed NBR bumper at each end to decelerate the piston, meaning it is not an adjustable air cushion. The hard-anodized inner wall minimizes friction, and the integrated magnet works seamlessly with AirTAC reed or electronic switches. With an 8 mm rod and an M5x0.8 port, it handles rapid actuation within a 30-500 mm/s speed range.
| Model | AirTAC SDA20X10SH Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 10 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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. |
|---|---|
| 20 | Bore size in mm. |
| ×10 | 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 exact lateral positioning on a conveyor carrying printed circuit boards, utilizing the short 10 mm stroke to nudge panels without consuming excessive frame depth.
Drives a small heat-sealing jaw on a vertical form-fill-seal machine, where the FKM seals withstand nearby thermal radiation and the compact body fits between forming tubes.
Ejects filled vials from an automated carousel dispenser, using the magnetic piston to confirm ejection via a reed or electronic switch before the indexing rotation resumes.
When sizing this unit, stepping down to the SDA16 provides 100.5 N of push at 0.5 MPa, whereas moving up to the SDA25 yields 245.4 N. The 20 mm bore offers a safe working load around 94 N (roughly 60% of its 157.1 N capacity), translating to a vertical lift capability of about 8 kg with a 2:1 safety margin. To order, confirm the 10 mm stroke, M5x0.8 port, female M4x0.7 rod thread, the -S magnet, and the -H FKM seal. Remember that a standard cylinder drifts when air is lost; the fixed bumper only softens the end stop and does not function as a locking brake, so add an external rod lock or pilot-operated check valve if you must hold a load vertically.
Quick checklist
This 20 mm bore cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa. At 0.7 MPa, it yields 219.9 N push and 184.7 N pull. The theoretical maximum push force is 32 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
No, the cylinder uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion. Additionally, it cannot hold a load if air pressure is lost; the piston will drift. For load holding, you must integrate an external rod lock or a pilot-operated check valve.
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