The AirTAC AirTAC SDA20X15B Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 15mm 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 SDA20X15B is a double-acting, single-rod compact cylinder engineered for tight axial spaces. It generates 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. The riveted unibody design integrates the barrel, rear cover, piston, and rod to drastically reduce overall length compared to conventional round-body units, saving valuable machine footprint.
This specific SKU features a male M6x1.0 threaded piston rod end for direct load coupling, overriding the default female M4x0.7 thread. The 20 mm bore utilizes an M5x0.8 port and a hard-anodized inner wall. End-of-travel deceleration is handled by fixed NBR bumpers rather than adjustable cushions, and because this configuration lacks the -S magnet option, it cannot host reed or electronic switches.
| Model | AirTAC SDA20X15B Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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. |
| ×15 | 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 15 mm stroke and 8 kg vertical lift margin to push thin printed circuit boards out of routing fixtures without damaging delicate traces.
Employs the 157.1 N push force to fold small corrugated carton flaps during automated case erecting, fitting neatly into compact packaging machinery frames.
Actuates a short diverter arm in electronic component assembly lines, relying on the space-saving riveted body to minimize axial mounting depth.
When sizing this 20 mm bore actuator, 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. Based on the 157.1 N push figure, the safe working load is approximately 94 N (about 60% capacity), translating to a vertical lift capability of roughly 8 kg with a 2:1 safety margin.
Remember that a standard compact cylinder drifts when air pressure is lost or the valve is centered, as the fixed rubber bumper only slows the piston near the stroke end rather than locking it. To suspend a load securely without live pressure, you must integrate an external rod lock or a pilot-operated check valve. To order, confirm the 15 mm stroke, M5x0.8 port, and the male M6x1.0 rod thread.
Quick checklist
This 20 mm bore double-acting cylinder provides 157.1 N push and 131.9 N pull at 0.5 MPa, 219.9 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum push of 32 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, handles speeds of 30-500 mm/s, and functions in temperatures from -20 to +70 C.
No adjustable air cushion is available; the unit relies on fixed NBR bumpers to decelerate the stroke end, so you should add an external shock absorber for high-energy loads. Additionally, this specific SKU lacks the -S piston magnet, meaning it cannot support reed or electronic switches.
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