The AirTAC SDA20X120 Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 120mm 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 SDA20X120 is a double-acting single-rod compact cylinder engineered to deliver 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Because the 120 mm stroke exceeds the 100 mm standard limit for this 20 mm bore, this specific configuration is treated as a non-standard, made-to-order item. The short riveted body design significantly reduces axial mounting depth, offering a distinct space-saving footprint advantage over conventional round-body cylinders in tight machinery layouts.
This unit features an 8 mm piston rod and an M5x0.8 air port. Instead of an adjustable air cushion, it relies on a fixed NBR bumper at each end to decelerate the piston near the stroke limits. This SKU is supplied without a piston magnet, meaning it cannot support AirTAC reed or electronic switches for position sensing.
| Model | AirTAC SDA20X120 Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 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. |
| ×120 | 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).
Adjusts the tensioning roller position on a packaging line over a 120 mm travel distance, where the fixed NBR bumper absorbs the end stops without needing external tuning.
Moves a fluid nozzle across a testing station, benefiting from the 8 mm rod and compact riveted body to minimize overall machine footprint.
When sizing this model, evaluate your force requirements carefully. Stepping down to the SDA16 provides 100.5 N of push at 0.5 MPa, while moving up to the SDA25 yields 245.4 N at the same pressure. Confirm your ordering essentials: 20 mm bore, 120 mm non-standard stroke, M5x0.8 port, female rod thread (M4x0.7), and no magnet.
Keep in mind that a plain compact cylinder does not hold its load if air pressure is lost or the 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.
Quick checklist
This 20 mm bore double-acting cylinder 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.
No, this specific SKU is manufactured without a piston magnet, so it cannot trigger AirTAC reed or electronic switches. You would need to specify the -S option to add a magnet for position sensing capabilities.
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