The AirTAC AirTAC SDA40X75S 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 SDA40X75S is a double-acting single-rod compact cylinder engineered for tight axial mounting spaces. By utilizing a riveted assembly that merges the barrel, rear cover, piston, and rod, this unit achieves a remarkably short overall length. It provides a robust 628.3 N push force and 527.8 N pull force at 0.5 MPa, driven through a 16 mm piston rod.
This specific configuration includes the S option, meaning a built-in piston magnet enables position detection via an AirTAC reed or electronic switch seated in the body grooves. The 40 mm bore features a hard-anodized inner wall and uses a PT1/8 port. End-of-stroke deceleration is handled strictly by a fixed NBR bumper, which is not field-adjustable.
| Model | AirTAC SDA40X75S 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 aluminium workpieces inside CNC machining centers, utilizing the 628.3 N extend force to maintain rigid clamping against cutting forces.
Drives the mechanical arms on automated packaging lines to tuck corrugated box flaps prior to tape sealing, fitting neatly within tight conveyor frames.
Pushes product lanes sideways on a palletizing conveyor, handling up to 32 kg vertical equivalent loads while detecting extend and retract positions via the magnetic switch.
When sizing this actuator, evaluate your neighbours: the SDA32 bore yields 402.1 N push at 0.5 MPa for lighter duties, while the SDA50 bore jumps to 981.7 N for heavier loads. For the SDA40X75S, the 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (about 60% capacity) or a vertical lift of approximately 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 75 mm stroke, PT1/8 port, female M8x1.25 rod thread, and the S magnet option.
Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered; the piston will drift. The fixed NBR bumper only decelerates the stroke near the ends rather than locking the rod. If your application demands static holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, the push force is 879.6 N and the pull force is 738.9 N. The theoretical maximum push force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa.
It relies on a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion; for high-speed cycles, add an external shock absorber. The S option provides a built-in magnet for use with an AirTAC reed or electronic switch in the body grooves.
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