The AirTAC AirTAC SDA40X40SBH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 40mm 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 SDA40X40SBH is a double-acting single-rod compact cylinder engineered with a 40 mm bore and 40 mm stroke. It delivers a robust 628.3 N push force at 0.5 MPa, making it highly effective for mid-range actuation tasks. The riveted body design significantly reduces axial mounting depth compared to traditional round-body units, conserving valuable machine footprint. This specific configuration includes a male M14x1.5 piston rod thread for secure load coupling, a built-in magnet for position sensing, and fluororubber (FKM) seals for enhanced thermal and oil resistance.
The bore inner wall is hard-anodized for longevity, and the piston utilizes a two-way seal. End-stop deceleration is handled by a fixed NBR bumper at each end rather than an adjustable air cushion. Magnetic-switch grooves run around the body to accept AirTAC reed or electronic switches, enabling precise end-position detection when paired with the integrated magnet.
| Model | AirTAC SDA40X40SBH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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. |
| ×40 | 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).
Secures aluminum housings during machining operations, utilizing the 628.3 N extend force to hold parts firmly against locators without deflection.
Drives mechanical arms to tuck corrugated box flaps prior to tape sealing, where the 40 mm stroke and space-saving riveted body fit neatly within narrow conveyor frames.
Actuates a precision valve for chemical dosing, leveraging the FKM seals to resist aggressive fluid vapors while maintaining accurate positioning via electronic switches.
When sizing this unit, evaluate your force requirements carefully. Stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N at the same pressure. For the SDA40X40SBH, the computed safe working load is approximately 377 N (about 60% of the 628.3 N figure at 0.5 MPa), which translates to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. 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 bumper only decelerates near stroke end. To maintain a vertical load without live pressure, you must integrate an external rod lock or a pilot-operated check valve. Confirm your ordering essentials: 40 mm bore, 40 mm stroke, PT1/8 port, male M14x1.5 rod thread, magnet included, and FKM seals.
Quick checklist
This 40 mm bore double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa. At 0.7 MPa, it produces 879.6 N push and 738.9 N pull. The theoretical maximum push force is 128 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
It relies on a fixed NBR bumper at each end to decelerate the piston near the stroke limits; it is not an adjustable air cushion. For high-energy cycles, add an external shock absorber. The -S code indicates a built-in piston magnet, allowing you to mount AirTAC reed or electronic switches directly into the body grooves for position feedback.
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