The AirTAC AirTAC SDA40X75SH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 75mm 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 SDA40X75SH is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and a 75 mm stroke. A riveted assembly joining the barrel, rear cover, piston, and rod drastically reduces axial mounting depth compared to conventional round-body units. Delivering 628.3 N of push force at 0.5 MPa, it utilizes a hard-anodized bore and a two-way piston seal for reliable pneumatic performance.
This specific configuration includes an -S option for a built-in piston magnet, enabling position detection via an AirTAC reed or electronic switch housed in the body grooves. The -H designation indicates fluororubber (FKM) seals for enhanced thermal and oil resistance. End-stopping is handled by a fixed NBR bumper that decelerates the piston near stroke limits rather than acting as a lock.
| Model | AirTAC SDA40X75SH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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. |
| ×75 | 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 engine blocks on a CNC machining center, using the 628.3 N extend force to hold parts firmly against cutting forces while the FKM seals resist coolant spray.
Drives a 75 mm stroke folding arm on a high-speed corrugated box erector, saving axial space within the compact machine frame while achieving rapid 30-500 mm/s cycling.
Actuates a routing flap on a logistics sorting line to push parcels, where the integrated piston magnet triggers an electronic switch to confirm gate position before items pass.
When sizing this actuator, evaluate your force margins both ways: 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. The 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (a 60% margin) or a vertical lift capacity of about 32 kg with a 2:1 safety factor. Confirm your ordering essentials: 40 mm bore, 75 mm stroke, PT1/8 port, female M8x1.25 rod thread, plus the S magnet and H FKM seal options.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered. The fixed bumper only decelerates the stroke end and will not lock the load. If your application requires strict position holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 40 mm bore double-acting cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, and 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 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
It relies on a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion or a braking lock. For high-energy cycles, add an external shock absorber. The built-in -S magnet works with AirTAC reed or electronic switches in the body grooves for end-position detection.
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