The AirTAC AirTAC SDA40X90SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 90mm 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 SDA40X90SB is a double-acting single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth compared to conventional round-body units, making it highly effective for machinery with tight spatial footprints. The 16 mm piston rod features a male M14x1.5 thread for robust load coupling, while the PT1/8 port manages pneumatic flow.
This specific configuration includes a built-in piston magnet (-S) for position sensing via AirTAC reed or electronic switches mounted in the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable cushion, meaning external shock absorbers should be added for high-energy 90 mm stroke cycles. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
| Model | AirTAC SDA40X90SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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. |
| ×90 | 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).
Actuates a routing flap on a logistics sorting line, utilizing the 628.3 N extend force to push parcels weighing up to 32 kg onto secondary chutes.
Drives the mechanical folding arms on a case erector, where the 90 mm stroke and male M14x1.5 rod securely pivot cardboard flaps into position for sealing tape.
Ejects stamped metal blanks from a small die set, taking advantage of the compact riveted body to fit within the confined press frame envelope.
When sizing this unit, evaluate stepping down to the SDA32, which yields 402.1 N of push at 0.5 MPa, or moving up to the SDA50, which provides 981.7 N at the same pressure. For the 628.3 N output at 0.5 MPa, the safe working load is approximately 377 N (60% capacity), translating to a vertical lift capability of about 32 kg with a 2:1 safety margin. Ensure your ordering essentials capture the 40 mm bore, 90 mm stroke, PT1/8 port, the -S magnet for sensing, and the -B male M14x1.5 rod thread.
Note that a standard SDA body does not hold its position or load if air pressure drops or the valve centers; the piston will drift, and the fixed NBR bumper only decelerates near the stroke end rather than locking it. If your application requires a held load without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, this 40 mm bore cylinder provides 628.3 N of push force and 527.8 N of pull force. At 0.7 MPa, the push increases to 879.6 N. The theoretical maximum push force is 128 kgf at 1.0 MPa.
No, the SDA40X90SB uses a fixed NBR bumper at each end to decelerate the piston, not an adjustable air cushion. For high-speed or high-energy cycles, you should add an external shock absorber or slow the approach speed. Additionally, this model includes the -S magnet for reed or electronic switches and the -B male M14x1.5 rod end.
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