The AirTAC AirTAC SDA40X15S Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 15mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X15S is a double-acting, single-rod compact cylinder engineered for tight axial spaces. It delivers 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. The riveted unibody design merges the barrel, rear cover, piston, and rod to drastically reduce overall length compared to conventional round-body units, saving valuable machine footprint.
This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. It features a 16 mm piston rod, female M8x1.25 rod-end thread, and PT1/8 ports. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow high-speed approaches or add external shock absorbers to mitigate impact energy.
| Model | AirTAC SDA40X15S Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 120 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | 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).
Clamps printed circuit board panels during routing operations, utilizing the short 15 mm stroke to secure the substrate without consuming valuable Z-axis tooling height.
Actuates small folding mechanisms on packaging lines to tuck carton flaps, using the 628.3 N push force to overcome board stiffness reliably.
Pushes tested electronic modules out of test fixtures, where the integrated magnet triggers a solid-state switch to confirm ejection completion.
Selecting this 40 mm bore involves balancing your force requirements: stepping down to an SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to an SDA50 provides 981.7 N. For this specific SDA40X15S, the 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (about 60 percent capacity) and a vertical lift capability of approximately 32 kg with a 2:1 safety margin.
When ordering, confirm the 15 mm stroke, PT1/8 porting, female M8x1.25 rod thread, and the included magnetic sensor option. Note that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered—the fixed bumper only decelerates the piston near stroke end and does not function as a locking brake. To suspend loads safely without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, or 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and it operates effectively between -20 and +70 C.
No, the SDA series uses a fixed NBR bumper at each end to absorb impact, which is not field-adjustable like a pneumatic air cushion. If your application runs at high speeds or involves heavy moving masses, you should either reduce the approach speed or install an external shock absorber to prevent premature wear.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.