The AirTAC AirTAC SDA20X5H Compact Cylinder | 20mm Bore FKM is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 5mm 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 SDA20X5H is a double-acting, single-rod compact cylinder engineered for extremely tight axial spaces. By utilizing a short riveted body that permanently joins the barrel, rear cover, piston, and rod, it drastically reduces mounting depth compared to conventional round-body units. This specific SKU features a 20mm bore and a 5mm stroke, generating 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. The H designation indicates a fluororubber (FKM) seal variant, providing enhanced resistance to higher temperatures and oil exposure.
This model incorporates an 8mm piston rod and M5x0.8 air ports. Because it lacks the S option code, it is built without a piston magnet and cannot be used with magnetic switches. The internal end-stop relies on a fixed NBR bumper to decelerate the piston near the stroke endpoints; it is not an adjustable air cushion. For high-energy cycles, operators should slow the approach or install an external shock absorber.
| Model | AirTAC SDA20X5H Compact Cylinder | 20mm Bore FKM |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 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. |
| ×5 | 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).
Uses the 5mm stroke and 157.1 N push force to eject printed circuit boards from test fixtures without damaging delicate traces.
Actuates a short clamping jaw in packaging machinery, where the FKM seals withstand warm operating environments and oil mists.
Presses small electronic connectors into housings on an assembly line, benefiting from the minimal axial footprint of the riveted body.
When sizing this 20mm bore actuator, evaluate your force margins carefully. Stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while moving up to the SDA25 provides 245.4 N at the same pressure. Based on the 157.1 N push figure at 0.5 MPa, the computed safe working load is approximately 94 N (about 60% capacity), which translates to a vertical lift capability of roughly 8 kg with a 2:1 safety margin.
Be aware that a standard compact cylinder does not hold its position if air pressure is lost or the directional valve is centered; the piston will drift, and the fixed NBR bumper only decelerates the stroke end rather than locking it. If your application requires position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve. To order, confirm the 20mm bore, 5mm stroke, M5x0.8 port, female M4x0.7 rod-end thread, and the FKM seal specification.
Quick checklist
This double-acting 20mm bore cylinder provides 157.1 N push and 131.9 N pull at 0.5 MPa, and 219.9 N push at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds from 30-500 mm/s.
No, this specific SKU does not include the S option code, meaning it lacks a piston magnet and cannot trigger AirTAC reed or electronic switches. If you require position feedback, you must select the SDA20X5HS variant or add an external mechanical sensor to your setup.
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