The AirTAC SDA20X10SN 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 SDA20X10SN is a double-acting, single-rod compact cylinder engineered for tight axial spaces. It delivers 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. The riveted body assembly drastically reduces overall length compared to round-body alternatives, making it ideal for shallow machine cavities.
This specific configuration includes a built-in piston magnet (S) for direct mounting of AirTAC reed or electronic switches along the body grooves. The 8 mm piston rod utilizes a female M4x0.7 thread, and the unit relies on a fixed NBR bumper at each end to decelerate the stroke. It operates at speeds between 30 and 500 mm/s.
| Model | AirTAC SDA20X10SN 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 a rapid 10 mm ejection stroke for printed circuit boards out of test fixtures, utilizing the 157.1 N push force within a shallow electronics assembly chassis.
Actuates a short stroke sealing jaw on a vertical form fill machine, where the compact riveted body minimizes axial interference with adjacent packaging rollers.
Pushes lightweight plastic components down a conveyor chute using a magnetic piston for position confirmation, ensuring precise routing at high cycling rates.
When sizing this 20 mm bore unit, consider stepping down to the SDA16 which provides 100.5 N of push at 0.5 MPa, or moving up to the SDA25 which yields 245.4 N at the same pressure.
To finalize your order, confirm the 20 mm bore, 10 mm stroke, M5x0.8 port, and the female M4x0.7 rod thread. Note that this cylinder lacks a position lock; if air pressure drops, the piston will drift and the fixed bumper will only decelerate it near the end of travel. An external rod lock or pilot-operated check valve is required to hold a load securely.
Quick checklist
This 20 mm bore double-acting 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 a proof pressure of 1.5 MPa.
No, it uses a fixed NBR bumper at each end to absorb end-stop impact. It is not an adjustable air cushion, nor does it function as a braking lock. For high energy cycles, you should add an external shock absorber or decrease the approach speed.
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