The AirTAC AirTAC SDA20X90 Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 90mm 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 SDA20X90 is a double-acting, single-rod compact cylinder delivering 157.1 N of push force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into a highly space-efficient unit, saving valuable axial mounting depth where a longer round-body actuator would fail to fit. The internal bore is hard-anodized and uses a two-way seal for reliable pneumatic performance.
This specific 90 mm stroke model approaches the 100 mm standard limit for the 20 mm bore class, making it ideal for moderate reach requirements in tight machinery. It features an 8 mm piston rod and M5x0.8 air ports. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or add an external shock absorber for high-energy loads.
| Model | AirTAC SDA20X90 Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 90 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. |
| ×90 | 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 the 157.1 N push at 0.5 MPa required to actuate the Z-axis cutting head on a printed circuit board routing machine, utilizing the 90 mm stroke to clear the work area.
Extends a routing flap on a logistics conveyor line. The compact riveted body minimizes axial footprint behind the belt frame while offering a safe working load of 94 N.
Drives the mechanical arm that tucks minor flaps on a continuous carton erector. The fixed NBR bumper absorbs the end stop without requiring external cushioning adjustments.
When sizing this actuator, evaluate your force needs bidirectionally: stepping down to the SDA16 provides 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 yields 245.4 N at the same pressure. For the SDA20X90, the computed safe working load is approximately 94 N (about 60% of the 157.1 N figure), translating to a vertical lift capacity of roughly 8 kg with a 2:1 safety margin. To finalize your order, confirm the 20 mm bore, 90 mm stroke, M5x0.8 port, female rod thread, and absence of a piston magnet.
Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the control valve is centered. The fixed NBR bumper only decelerates the piston near the stroke ends and does not function as a locking brake. If your application must hold a load vertically without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
The SDA20X90 generates a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. At 0.7 MPa, the push force is 219.9 N. The theoretical maximum push force is 32 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU lacks the internal piston magnet, so it cannot trigger AirTAC reed or electronic switches. To add position sensing, you must select the SDA20X90S variant, which includes the built-in magnet for the magnetic-switch grooves around the body.
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