The AirTAC AirTAC SDA40X90BH 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 SDA40X90BH 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 body design integrates the barrel, rear cover, and piston into a highly space-efficient package, saving valuable axial mounting depth in tight machinery layouts. This specific configuration includes a 90 mm stroke and a hard-anodized bore operating at speeds between 30 and 500 mm/s.
This SKU is configured with a male M14x1.5 piston rod thread (option B) for robust load coupling and fluororubber (FKM) seals (option H) for enhanced thermal and oil resistance. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Because this variant lacks the -S magnet option, it cannot host magnetic position sensors.
| Model | AirTAC SDA40X90BH 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).
Drives the folding mechanism on continuous carton erecting machines, utilizing the 90 mm stroke and 628.3 N push force to cleanly fold heavy corrugated cardboard flaps at high cycle rates.
Actuates a routing diverter on a parcel sorting line, where the compact riveted body minimizes footprint and the FKM seals withstand occasional lubricant overspray from the chain.
Releases secondary locking pins on automated pallet changers, leveraging the male M14x1.5 rod end for secure mechanical coupling and the 527.8 N retract force to pull the pin clear.
When sizing this actuator, stepping down to the SDA32 bore yields 402.1 N of push force at 0.5 MPa, while stepping up to the SDA50 bore provides 981.7 N. For the SDA40X90BH, the theoretical safe working load is approximately 377 N (about 60% of the 0.5 MPa push figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Ensure your ordering essentials match this exact configuration: 40 mm bore, 90 mm stroke, PT1/8 port, male M14x1.5 rod thread, FKM seals, and no sensor magnet. Note that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a locking brake. If your application requires absolute position holding, an external rod lock or pilot-operated check valve is required.
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. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and the operating speed range is 30-500 mm/s.
No, this specific SKU does not include the -S magnet option, so it cannot host AirTAC reed or electronic switches. Additionally, end-of-stroke deceleration is provided by a fixed NBR bumper, which is not an adjustable air cushion; for high-energy cycles, you should slow the approach or add an external shock absorber.
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