The AirTAC AirTAC SDA20X20N Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 20mm 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 SDA20X20N is a double-acting single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly unites the barrel, rear cover, piston, and rod to minimize axial mounting depth, delivering a 157.1 N push at 0.5 MPa. The 8 mm piston rod utilizes a female M4x0.7 thread, and the body features a hard-anodized bore for reduced friction.
This model relies on a fixed NBR bumper at each end to decelerate the stroke, meaning it is not an adjustable air cushion. Operating at speeds of 30-500 mm/s, this SKU is built without a piston magnet and therefore cannot host magnetic switches. For position feedback, the S variant adds a magnet compatible with reed or electronic switches.
| Model | AirTAC SDA20X20N Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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. |
| ×20 | 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).
Actuates a routing blade to singulate printed circuit boards, utilizing the 20 mm stroke and 157.1 N force to cleanly sever substrate material without excessive bulk.
Drives a short mechanical arm to tuck minor flaps on pharmaceutical carton packaging lines, where the compact riveted body conserves valuable axial machine space.
Moves a pipetting head into reagent trays with a safe working load near 94 N, ensuring accurate fluid transfer within tight laboratory automation enclosures.
When sizing this 20 mm bore actuator, compare its 157.1 N push at 0.5 MPa against adjacent options. Stepping down, the SDA16 provides 100.5 N; stepping up, the SDA25 yields 245.4 N. Based on the 0.5 MPa figure, a safe working load is roughly 94 N (about 60 percent capacity), translating to a vertical lift of approximately 8 kg with a 2:1 safety margin. To finalize your order, confirm the 20 mm bore, 20 mm stroke, M5x0.8 port, female rod thread, and the absence of a sensor magnet. Note that this cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered—an external rod lock or pilot-operated check valve is required for holding.
Quick checklist
This double-acting cylinder provides a push of 157.1 N and a pull of 131.9 N at 0.5 MPa. At 0.7 MPa, the push is 219.9 N and the pull is 184.7 N. The theoretical maximum push is 32 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
No, this SKU uses a fixed NBR bumper at each end to decelerate the stroke end, which is not an adjustable air cushion. Additionally, it lacks a piston magnet, so it cannot host reed or electronic switches; you would need the S option for sensing capabilities.
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